How to use addError method in Cucumber-gherkin

...10  var code = [11    "var a\u000a = 'Here is a unsafe character';",12  ];13  TestRun(test)14    .addError(1, "This character may get silently deleted by one or more browsers.")15    .test(code, {es3: true});16  test.done();17};18exports.other = function (test) {19  var code = [20    "\\",21    "!",22  ];23  TestRun(test)24    .addError(1, "Unexpected '\\'.")25    .addError(2, "Unexpected early end of program.")26    .addError(2, "Expected an identifier and instead saw '(end)'.")27    .addError(2, "Unrecoverable syntax error. (100% scanned).")28    .test(code, {es3: true});29  // GH-81830  TestRun(test)31    .addError(1, "Expected an identifier and instead saw ')'.")32    .addError(1, "Unrecoverable syntax error. (100% scanned).")33    .test("if (product < ) {}", {es3: true});34  test.done();35};36exports.confusingOps = function (test) {37  var code = [38    "var a = 3 - -3;",39    "var b = 3 + +3;",40    "a = a - --a;",41    "a = b + ++b;",42    "a = a-- - 3;", // this is not confusing?!43    "a = a++ + 3;", // this is not confusing?!44  ];45  var run = TestRun(test)46    .addError(1, "Confusing minuses.")47    .addError(2, "Confusing plusses.")48    .addError(3, "Confusing minuses.")49    .addError(4, "Confusing plusses.");50  run.test(code, {es3: true});51  run.test(code, {}); // es552  run.test(code, {esnext: true});53  run.test(code, {moz: true});54  test.done();55};56exports.division = function (test) {57  var run;58  var code = [59    'var a=4,b=4,i=2;',60    'a/=b+2;',61    'a/=b/2;',62    'a/=b/i;',63    '/*jshint expr:true*/',64    '/=b/i;' // valid standalone RegExp expression65  ];66  run = TestRun(test);67  run.test(code);68  test.done();69};70exports.plusplus = function (test) {71  var run;72  var code = [73    "var a = ++[2];",74    "var b = --(2);",75  ];76  run = TestRun(test)77    .addError(1, "Unexpected use of '++'.")78    .addError(2, "Unexpected use of '--'.");79  run.test(code, { plusplus: true, es3: true });80  run.test(code, { plusplus: true }); // es581  run.test(code, { plusplus: true, esnext: true });82  run.test(code, { plusplus: true, moz: true });83  run = TestRun(test)84    .addError(2, "Bad operand.");85  run.test(code, { plusplus: false, es3: true });86  run.test(code, { plusplus: false }); // es587  run.test(code, { plusplus: false, esnext: true });88  run.test(code, { plusplus: false, moz: true });89  test.done();90};91exports.assignment = function (test) {92  var code = [93    "function test() {",94    "arguments.length = 2;",95    "arguments[0] = 3;",96    "}",97    "function test2() {",98    "\"use strict\";",99    "arguments.length = 2;",100    "arguments[0] = 3;",101    "}",102    "a() = 2;",103  ];104  var run = TestRun(test)105    .addError(2, "Bad assignment.")106    .addError(3, "Bad assignment.")107    .addError(10, "Bad assignment.")108    .addError(10, "Expected an assignment or function call and instead saw an expression.")109    .addError(10, "Missing semicolon.");110  run.test(code, { plusplus: true, es3: true });111  run.test(code, { plusplus: true }); // es5112  run.test(code, { plusplus: true, esnext: true });113  run.test(code, { plusplus: true, moz: true });114  test.done();115};116exports.relations = function (test) {117  var code = [118    "var a = 2 === NaN;",119    "var b = NaN == 2;",120    "var c = !2 < 3;",121    "var c = 2 < !3;",122    "var d = (!'x' in obj);",123    "var e = (!a === b);",124    "var f = (a === !'hi');",125    "var g = (!2 === 1);",126    "var h = (![1, 2, 3] === []);",127  ];128  var run = TestRun(test)129    .addError(1, "Use the isNaN function to compare with NaN.")130    .addError(2, "Use the isNaN function to compare with NaN.")131    .addError(3, "Confusing use of '!'.", {character : 9})132    .addError(4, "Confusing use of '!'.", {character : 13})133    .addError(5, "Confusing use of '!'.", {character : 10})134    .addError(6, "Confusing use of '!'.", {character : 10})135    .addError(7, "Confusing use of '!'.", {character : 16})136    .addError(8, "Confusing use of '!'.", {character : 10})137    .addError(9, "Confusing use of '!'.", {character : 10});138  run.test(code, {es3: true});139  run.test(code, {}); // es5140  run.test(code, {esnext: true});141  run.test(code, {moz: true});142  test.done();143};144exports.options = function (test) {145  var code = [146    "/*member a*/",147    "/*members b*/",148    "var x; x.a.b.c();",149    "/*jshint ++ */",150    "/*jslint indent: 0 */",151    "/*jslint indent: -2 */",152    "/*jslint indent: 100.4 */",153    "/*jslint maxlen: 200.4 */",154    "/*jslint maxerr: 300.4 */",155    "/*jslint maxerr: 0 */",156    "/*jslint maxerr: 20 */",157    "/*member c:true */",158    "/*jshint d:no */",159    "/*global xxx*/",160    "xxx = 2;",161  ];162  var run = TestRun(test)163    .addError(3, "Unexpected /*member 'c'.")164    .addError(4, "Bad option: '++'.")165    .addError(5, "Expected a small integer or 'false' and instead saw '0'.")166    .addError(6, "Expected a small integer or 'false' and instead saw '-2'.")167    .addError(7, "Expected a small integer or 'false' and instead saw '100.4'.")168    .addError(8, "Expected a small integer or 'false' and instead saw '200.4'.")169    .addError(9, "Expected a small integer or 'false' and instead saw '300.4'.")170    .addError(10, "Expected a small integer or 'false' and instead saw '0'.")171    .addError(13, "Bad option: 'd'.")172    .addError(15, "Read only.");173  run.test(code, {es3: true});174  run.test(code, {}); // es5175  run.test(code, {esnext: true});176  run.test(code, {moz: true});177  TestRun(test).test(fs.readFileSync(__dirname + "/fixtures/gh988.js", "utf8"));178  test.done();179};180exports["jshint option comments single line"] = function (test) {181  var src = fs.readFileSync(__dirname + "/fixtures/gh1768-1.js", "utf8");182  TestRun(test).test(src);183  test.done();184};185exports["jshint option comments single line, leading and trailing space"] = function (test) {186  var src = fs.readFileSync(__dirname + "/fixtures/gh1768-2.js", "utf8");187  TestRun(test).test(src);188  test.done();189};190exports["jshint option comments multi line"] = function (test) {191  var src = fs.readFileSync(__dirname + "/fixtures/gh1768-3.js", "utf8");192  TestRun(test).test(src);193  test.done();194};195exports["jshint option comments multi line, leading and trailing space"] = function (test) {196  var src = fs.readFileSync(__dirname + "/fixtures/gh1768-4.js", "utf8");197  TestRun(test)198    .addError(4, "'foo' is not defined.")199    .test(src);200  test.done();201};202exports["jshint option comments multi line/option"] = function (test) {203  var src = fs.readFileSync(__dirname + "/fixtures/gh1768-5.js", "utf8");204  TestRun(test)205    .addError(3, "'foo' is not defined.")206    .test(src);207  test.done();208};209exports["jshint option comments multi line/option, leading and trailing space"] = function (test) {210  var src = fs.readFileSync(__dirname + "/fixtures/gh1768-6.js", "utf8");211  TestRun(test)212    .addError(4, "'foo' is not defined.")213    .test(src);214  test.done();215};216exports.shebang = function (test) {217  var code = [218    "#!test",219    "var a = 'xxx';",220    "#!test"221  ];222  var run = TestRun(test)223    .addError(3, "Expected an identifier and instead saw '#'.")224    .addError(3, "Expected an operator and instead saw '!'.")225    .addError(3, "Expected an assignment or function call and instead saw an expression.")226    .addError(3, "Missing semicolon.");227  run.test(code, {es3: true});228  run.test(code, {}); // es5229  run.test(code, {esnext: true});230  run.test(code, {moz: true});231  test.done();232};233exports.shebangImpliesNode = function (test) {234  var code = [235    "#!usr/bin/env node",236    "require('module');",237  ];238  TestRun(test).test(code);239  test.done();240};241exports.numbers = function (test) {242  /*jshint maxlen: 300*/243  var code = [244    "var a = 10e307;",245    "var b = 10e308;",246    "var c = 0.03 + 0.3 + 3.0 + 30.00;",247    "var d = 03;",248    "var e = .3;",249    "var f = 0xAAg;",250    "var g = 0033;",251    "var h = 3.;",252    "var i = 3.7.toString();",253    "var j = 1e-10;" // GH-821254  ];255  TestRun(test)256    .addError(2, "Bad number '10e308'.")257    .addError(5, "A leading decimal point can be confused with a dot: '.3'.")258    .addError(6, "Unexpected '0'.")259    .addError(7, "Expected an identifier and instead saw 'var'.")260    .addError(7, "Missing semicolon.")261    .addError(7, "Don't use extra leading zeros '0033'.")262    .addError(8, "A trailing decimal point can be confused with a dot: '3.'.")263    .addError(9, "A dot following a number can be confused with a decimal point.")264    .test(code, {es3: true});265  // Octals are prohibited in strict mode.266  TestRun(test)267    .addError(3, "Octal literals are not allowed in strict mode.")268    .test([269      "(function () {",270      "'use strict';",271      "return 045;",272      "}());"273    ]);274  // GitHub #751 - an expression containing a number with a leading decimal point should be parsed in its entirety275  TestRun(test)276    .addError(1, "A leading decimal point can be confused with a dot: '.3'.")277    .addError(2, "A leading decimal point can be confused with a dot: '.3'.")278    .test([279      "var a = .3 + 1;",280      "var b = 1 + .3;",281    ]);282  test.done();283};284exports.comments = function (test) {285  var code = [286    "/*",287    "/* nested */",288    "*/",289    "/* unclosed ..",290  ];291  var run = TestRun(test)292    .addError(3, "Unbegun comment.")293    .addError(4, "Unclosed comment.");294  run.test(code, {es3: true});295  run.test(code, {}); // es5296  run.test(code, {esnext: true});297  run.test(code, {moz: true});298  var src = "/* this is a comment /* with nested slash-start */";299  TestRun(test).test(src);300  TestRun(test).test(fs.readFileSync(__dirname + "/fixtures/gruntComment.js", "utf8"));301  test.done();302};303exports.regexp = function (test) {304  var code = [305    "var a1 = /\\\x1f/;",306    "var a2 = /[\\\x1f]/;",307    "var b1 = /\\</;", // only \< is unexpected?!308    "var b2 = /[\\<]/;", // only \< is unexpected?!309    "var c = /(?(a)b)/;",310    "var d = /)[--aa-b-cde-]/;",311    "var e = /[]/;",312    "var f = /[^]/;",313    "var g = /[a^[]/;",314    // FIXME: Firefox doesn't handle [a-\\s] well.315    // See https://bugzilla.mozilla.org/show_bug.cgi?id=813249316    "", // "var h = /[a-\\s-\\w-\\d\\x10-\\x20--]/;",317    "var i = /[/-a1-/]/;",318    "var j = /[a-<<-3]./;",319    "var k = /]}/;",320    "var l = /?(*)(+)({)/;",321    "var m = /a{b}b{2,c}c{3,2}d{4,?}x{30,40}/;",322    "var n = /a??b+?c*?d{3,4}? a?b+c*d{3,4}/;",323    "var o = /a\\/*  [a-^-22-]/;",324    "var p = /(?:(?=a|(?!b)))/;",325    "var q = /=;/;",326    "var r = /(/;",327    "var s = /(((/;",328    "var t = /x/* 2;",329    "var u = /x/;",330    "var v = /dsdg;",331    "var w = v + /s/;",332    "var x = w - /s/;",333    "var y = typeof /[a-z]/;" // GH-657334  ];335  var run = TestRun(test)336    .addError(1, "This character may get silently deleted by one or more browsers.")337    .addError(1, "Unexpected control character in regular expression.")338    .addError(2, "This character may get silently deleted by one or more browsers.")339    .addError(2, "Unexpected control character in regular expression.")340    .addError(3, "Unexpected escaped character '<' in regular expression.")341    .addError(4, "Unexpected escaped character '<' in regular expression.")342    .addError(5, "Invalid regular expression.")343    .addError(6, "Invalid regular expression.")344    .addError(11, "Invalid regular expression.")345    .addError(12, "Invalid regular expression.")346    .addError(14, "Invalid regular expression.")347    .addError(15, "Invalid regular expression.")348    .addError(17, "Invalid regular expression.")349    .addError(20, "Invalid regular expression.")350    .addError(21, "Invalid regular expression.")351    .addError(24, "Unclosed regular expression.")352    .addError(24, "Unrecoverable syntax error. (88% scanned).");353  run.test(code, {es3: true});354  run.test(code, {}); // es5355  run.test(code, {esnext: true});356  run.test(code, {moz: true});357  // Pre Regular Expression Punctuation358  //  (See: token method, create function in lex.js)359  //360  // "."361  TestRun(test)362    .addError(1, "A trailing decimal point can be confused with a dot: '10.'.")363    .test("var y = 10. / 1;", {es3: true});364  TestRun(test)365    .addError(1, "A trailing decimal point can be confused with a dot: '10.'.")366    .test("var y = 10. / 1;", {}); // es5367  TestRun(test)368    .addError(1, "A trailing decimal point can be confused with a dot: '10.'.")369    .test("var y = 10. / 1;", {esnext: true});370  TestRun(test)371    .addError(1, "A trailing decimal point can be confused with a dot: '10.'.")372    .test("var y = 10. / 1;", {moz: true});373  // ")"374  TestRun(test).test("var y = Math.sqrt(16) / 180;", {es3: true});375  TestRun(test).test("var y = Math.sqrt(16) / 180;", {}); // es5376  TestRun(test).test("var y = Math.sqrt(16) / 180;", {esnext: true});377  TestRun(test).test("var y = Math.sqrt(16) / 180;", {moz: true});378  // "~"379  TestRun(test).test("var y = Math.sqrt(16) / 180;", {es3: true});380  TestRun(test).test("var y = Math.sqrt(16) / 180;", {}); // es5381  TestRun(test).test("var y = Math.sqrt(16) / 180;", {esnext: true});382  TestRun(test).test("var y = Math.sqrt(16) / 180;", {moz: true});383  // "]" (GH-803)384  TestRun(test).test("var x = [1]; var y = x[0] / 180;", {es3: true});385  TestRun(test).test("var x = [1]; var y = x[0] / 180;", {}); // es5386  TestRun(test).test("var x = [1]; var y = x[0] / 180;", {esnext: true});387  TestRun(test).test("var x = [1]; var y = x[0] / 180;", {moz: true});388  // "++" (GH-1787)389  TestRun(test).test("var a = 1; var b = a++ / 10;", {es3: true});390  TestRun(test).test("var a = 1; var b = a++ / 10;", {}); // es5391  TestRun(test).test("var a = 1; var b = a++ / 10;", {esnext: true});392  TestRun(test).test("var a = 1; var b = a++ / 10;", {moz: true});393  // "--" (GH-1787)394  TestRun(test).test("var a = 1; var b = a-- / 10;", {es3: true});395  TestRun(test).test("var a = 1; var b = a-- / 10;", {}); // es5396  TestRun(test).test("var a = 1; var b = a-- / 10;", {esnext: true});397  TestRun(test).test("var a = 1; var b = a-- / 10;", {moz: true});398  test.done();399};400exports.testRegexRegressions = function (test) {401  // GH-536402  TestRun(test).test("str /= 5;", {es3: true}, { str: true });403  TestRun(test).test("str /= 5;", {}, { str: true }); // es5404  TestRun(test).test("str /= 5;", {esnext: true}, { str: true });405  TestRun(test).test("str /= 5;", {moz: true}, { str: true });406  TestRun(test).test("str = str.replace(/=/g, '');",  {es3: true}, { str: true });407  TestRun(test).test("str = str.replace(/=/g, '');", {}, { str: true }); // es5408  TestRun(test).test("str = str.replace(/=/g, '');", {esnext: true}, { str: true });409  TestRun(test).test("str = str.replace(/=/g, '');", {moz: true}, { str: true });410  TestRun(test).test("str = str.replace(/=abc/g, '');", {es3: true}, { str: true });411  TestRun(test).test("str = str.replace(/=abc/g, '');", {}, { str: true }); // es5412  TestRun(test).test("str = str.replace(/=abc/g, '');", {esnext: true}, { str: true });413  TestRun(test).test("str = str.replace(/=abc/g, '');", {moz: true}, { str: true });414  // GH-538415  TestRun(test).test("var exp = /function(.*){/gi;", {es3: true});416  TestRun(test).test("var exp = /function(.*){/gi;", {}); // es5417  TestRun(test).test("var exp = /function(.*){/gi;", {esnext: true});418  TestRun(test).test("var exp = /function(.*){/gi;", {moz: true});419  test.done();420};421exports.strings = function (test) {422  var code = [423    "var a = '\u0012\\r';",424    "var b = \'\\g\';",425    "var c = '\\u0022\\u0070\\u005C';",426    "var e = '\\x6b..\\x6e';",427    "var f = 'ax"428  ];429  var run = TestRun(test)430    .addError(1, "Control character in string: <non-printable>.", {character: 10})431    .addError(1, "This character may get silently deleted by one or more browsers.")432    .addError(2, "Bad or unnecessary escaping.")433    .addError(5, "Unclosed string.")434    .addError(5, "Missing semicolon.");435  run.test(code, {es3: true});436  run.test(code, {}); // es5437  run.test(code, {esnext: true});438  run.test(code, {moz: true});439  test.done();440};441exports.ownProperty = function (test) {442  var code = [443    "var obj = { hasOwnProperty: false };",444    "obj.hasOwnProperty = true;",445    "obj['hasOwnProperty'] = true;",446    "function test() { var hasOwnProperty = {}.hasOwnProperty; }"447  ];448  var run = TestRun(test)449    .addError(1, "'hasOwnProperty' is a really bad name.")450    .addError(2, "'hasOwnProperty' is a really bad name.")451    .addError(3, "'hasOwnProperty' is a really bad name.")452    .addError(3, "['hasOwnProperty'] is better written in dot notation.");453  run.test(code, {es3: true});454  run.test(code, {}); // es5455  run.test(code, {esnext: true});456  run.test(code, {moz: true});457  test.done();458};459exports.jsonMode = function (test) {460  var code = [461    '{',462    '  a: 2,',463    '  \'b\': "hallo\\"\\v\\x12\\\'world",',464    '  "c\\"\\v\\x12": \'4\',',465    '  "d": "4\\',466    '  ",',467    '  "e": 0x332,',468    '  "x": 0',469    '}',470  ];471  var run = TestRun(test)472    .addError(2, "Expected a string and instead saw a.")473    .addError(3, "Strings must use doublequote.")474    .addError(3, "Avoid \\v.")475    .addError(3, "Avoid \\x-.")476    .addError(3, "Avoid \\'.")477    .addError(4, "Avoid \\v.")478    .addError(4, "Avoid \\x-.")479    .addError(4, "Strings must use doublequote.")480    .addError(5, "Avoid EOL escaping.")481    .addError(7, "Avoid 0x-.");482  run.test(code, {multistr: true, es3: true});483  run.test(code, {multistr: true}); // es5484  run.test(code, {multistr: true, esnext: true});485  run.test(code, {multistr: true, moz: true});486  test.done();487};488exports.comma = function (test) {489  var src = fs.readFileSync(__dirname + "/fixtures/comma.js", "utf8");490  TestRun(test)491    .addError(2, "Expected an assignment or function call and instead saw an expression.")492    .addError(15, "Expected an assignment or function call and instead saw an expression.")493    .addError(15, "Missing semicolon.")494    .addError(20, "Expected an assignment or function call and instead saw an expression.")495    .addError(30, "Expected an assignment or function call and instead saw an expression.")496    .addError(35, "Expected an assignment or function call and instead saw an expression.")497    .addError(35, "Missing semicolon.")498    .addError(36, "Unexpected 'if'.")499    .addError(43, "Expected an assignment or function call and instead saw an expression.")500    .addError(43, "Missing semicolon.")501    .addError(44, "Unexpected '}'.")502    .test(src, {es3: true});503  // Regression test (GH-56)504  TestRun(test)505    .addError(4, "Expected an assignment or function call and instead saw an expression.")506    .test(fs.readFileSync(__dirname + "/fixtures/gh56.js", "utf8"));507  // Regression test (GH-363)508  TestRun(test)509    .addError(1, "Extra comma. (it breaks older versions of IE)")510    .test("var f = [1,];", {es3: true});511  test.done();512};513exports.withStatement = function (test) {514  var src = fs.readFileSync(__dirname + "/fixtures/with.js", "utf8");515  var run;516  run = TestRun(test)517    .addError(5, "Don't use 'with'.")518    .addError(13, "'with' is not allowed in strict mode.");519  run.test(src, {es3: true});520  run.test(src); // es5521  run.test(src, {esnext: true});522  run.test(src, {moz: true});523  run = TestRun(test)524    .addError(13, "'with' is not allowed in strict mode.");525  run.test(src, {withstmt: true, es3: true});526  run.test(src, {withstmt: true}); // es5527  run.test(src, {withstmt: true, esnext: true});528  run.test(src, {withstmt: true, moz: true});529  test.done();530};531exports.blocks = function (test) {532  var src = fs.readFileSync(__dirname + "/fixtures/blocks.js", "utf8");533  var run = TestRun(test)534    .addError(29, "Unmatched \'{\'.")535    .addError(31, "Unmatched \'{\'.");536  run.test(src, {es3: true});537  run.test(src, {}); // es5538  run.test(src, {esnext: true});539  run.test(src, {moz: true});540  test.done();541};542exports.functionCharacterLocation = function (test) {543  var i;544  var src = fs.readFileSync(__dirname + "/fixtures/nestedFunctions.js", "utf8");545  var locations = JSON.parse(546    fs.readFileSync(547      __dirname + "/fixtures/nestedFunctions-locations.js", "utf8"548    )549  );550  JSHINT(src);551  var report = JSHINT.data().functions;552  test.equal(locations.length, report.length);553  for (i = 0; i < locations.length; i += 1) {554    test.equal(locations[i].name, report[i].name);555    test.equal(locations[i].line, report[i].line);556    test.equal(locations[i].character, report[i].character);557    test.equal(locations[i].last, report[i].last);558    test.equal(locations[i].lastcharacter, report[i].lastcharacter);559  }560  test.done();561};562exports.exported = function (test) {563  var src = fs.readFileSync(__dirname + "/fixtures/exported.js", "utf8");564  var run = TestRun(test)565    .addError(5, "'unused' is defined but never used.")566    .addError(6, "'isDog' is defined but never used.")567    .addError(13, "'unusedDeclaration' is defined but never used.")568    .addError(14, "'unusedExpression' is defined but never used.")569    .addError(17, "'cannotBeExported' is defined but never used.");570  run.test(src, {es3: true, unused: true });571  run.test(src, {unused: true }); // es5572  run.test(src, {esnext: true, unused: true });573  run.test(src, {moz: true, unused: true });574  run = TestRun(test)575    .addError(1, "'unused' is defined but never used.")576    .test("var unused = 1; var used = 2;", {exported: ["used"], unused: true});577  test.done();578};579exports.testIdentifiers = function (test) {580  var src = fs.readFileSync(__dirname + "/fixtures/identifiers.js", "utf8");581  TestRun(test).test(src, {es3: true});582  var run = TestRun(test)583    .addError(1, "'ascii' is defined but never used.")584    .addError(2, "'num1' is defined but never used.")585    .addError(3, "'lifé' is defined but never used.")586    .addError(4, "'π' is defined but never used.")587    .addError(5, "'привет' is defined but never used.")588    .addError(6, "'\\u1d44' is defined but never used.")589    .addError(7, "'encoded\\u1d44' is defined but never used.")590    .addError(8, "'\\uFF38' is defined but never used.")591    .addError(9, "'\\uFF58' is defined but never used.")592    .addError(10, "'\\u1FBC' is defined but never used.")593    .addError(11, "'\\uFF70' is defined but never used.")594    .addError(12, "'\\u4DB3' is defined but never used.")595    .addError(13, "'\\u97CA' is defined but never used.")596    .addError(14, "'\\uD7A1' is defined but never used.")597    .addError(15, "'\\uFFDA' is defined but never used.")598    .addError(16, "'\\uA6ED' is defined but never used.")599    .addError(17, "'\\u0024' is defined but never used.")600    .addError(18, "'\\u005F' is defined but never used.")601    .addError(19, "'\\u0024\\uFF38' is defined but never used.")602    .addError(20, "'\\u0024\\uFF58' is defined but never used.")603    .addError(21, "'\\u0024\\u1FBC' is defined but never used.")604    .addError(22, "'\\u0024\\uFF70' is defined but never used.")605    .addError(23, "'\\u0024\\u4DB3' is defined but never used.")606    .addError(24, "'\\u0024\\u97CA' is defined but never used.")607    .addError(25, "'\\u0024\\uD7A1' is defined but never used.")608    .addError(26, "'\\u0024\\uFFDA' is defined but never used.")609    .addError(27, "'\\u0024\\uA6ED' is defined but never used.")610    .addError(28, "'\\u0024\\uFE24' is defined but never used.")611    .addError(29, "'\\u0024\\uABE9' is defined but never used.")612    .addError(30, "'\\u0024\\uFF17' is defined but never used.")613    .addError(31, "'\\u0024\\uFE4E' is defined but never used.")614    .addError(32, "'\\u0024\\u200C' is defined but never used.")615    .addError(33, "'\\u0024\\u200D' is defined but never used.")616    .addError(34, "'\\u0024\\u0024' is defined but never used.")617    .addError(35, "'\\u0024\\u005F' is defined but never used.");618  run.test(src, {es3: true, unused: true });619  run.test(src, {unused: true }); // es5620  run.test(src, {esnext: true, unused: true });621  run.test(src, {moz: true, unused: true });622  test.done();623};624exports["regression for GH-878"] = function (test) {625  var src = fs.readFileSync(__dirname + "/fixtures/gh878.js", "utf8");626  TestRun(test).test(src, {es3: true});627  test.done();628};629exports["regression for GH-910"] = function (test) {630  var src = "(function () { if (true) { foo.bar + } })();";631  TestRun(test)632    .addError(1, "Expected an identifier and instead saw '}'.")633    .addError(1, "Expected an assignment or function call and instead saw an expression.")634    .addError(1, "Missing semicolon.")635    .addError(1, "Expected an identifier and instead saw ')'.")636    .addError(1, "Expected an operator and instead saw '('.")637    .addError(1, "Unmatched '{'.")638    .addError(1, "Unmatched '('.")639    .addError(1, "Expected an assignment or function call and instead saw an expression.")640    .addError(1, "Missing semicolon.")641    .test(src, { es3: true, nonew: true });642  test.done();643};644exports.testHtml = function (test) {645  var html = "<html><body>Hello World</body></html>";646  TestRun(test)647    .addError(1, "Expected an identifier and instead saw '<'.")648    .addError(1, "Expected an assignment or function call and instead saw an expression.")649    .addError(1, "Missing semicolon.")650    .addError(1, "Expected an identifier and instead saw '<'.")651    .addError(1, "Unrecoverable syntax error. (100% scanned).")652    .test(html, {});653  test.done();654};655exports["test: destructuring var in function scope"] = function (test) {656  var code = [657    "function foobar() {",658    "  var [ a, b, c ] = [ 1, 2, 3 ];",659    "  var [ a ] = [ 1 ];",660    "  var [ a ] = [ z ];",661    "  var [ h, w ] = [ 'hello', 'world' ]; ",662    "  var [ o ] = [ { o : 1 } ];",663    "  var [ a, [ [ [ b ], c ], d ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",664    "  var { foo : bar } = { foo : 1 };",665    "  var [ a, { foo : bar } ] = [ 2, { foo : 1 } ];",666    "  var [ 1 ] = [ a ];",667    "  var [ a, b; c ] = [ 1, 2, 3 ];",668    "  var [ a, b, c ] = [ 1, 2; 3 ];",669    "}"670  ];671  TestRun(test)672    .addError(1,  "'foobar' is defined but never used.")673    .addError(3,  "'a' is already defined.")674    .addError(4,  "'a' is already defined.")675    .addError(7,  "'a' is already defined.")676    .addError(7,  "'b' is already defined.")677    .addError(7,  "'c' is already defined.")678    .addError(9,  "'a' is already defined.")679    .addError(9,  "'bar' is already defined.")680    .addError(10,  "Expected an identifier and instead saw '1'.")681    .addError(10,  "Expected ',' and instead saw '1'.")682    .addError(10,  "Expected an identifier and instead saw ']'.")683    .addError(11, "Expected ',' and instead saw ';'.")684    .addError(11, "'a' is already defined.")685    .addError(11, "'b' is already defined.")686    .addError(11, "'c' is already defined.")687    .addError(12, "'a' is already defined.")688    .addError(12, "'b' is already defined.")689    .addError(12, "'c' is already defined.")690    .addError(12, "Expected ']' to match '[' from line 12 and instead saw ';'.")691    .addError(12, "Missing semicolon.")692    .addError(12, "Expected an assignment or function call and instead saw an expression.")693    .addError(12, "Missing semicolon.")694    .addError(12, "Expected an identifier and instead saw ']'.")695    .addError(12, "Expected an assignment or function call and instead saw an expression.")696    .addError(4,  "'z' is not defined.")697    .addError(12, "'a' is defined but never used.")698    .addError(12, "'b' is defined but never used.")699    .addError(12, "'c' is defined but never used.")700    .addError(5,  "'h' is defined but never used.")701    .addError(5,  "'w' is defined but never used.")702    .addError(6,  "'o' is defined but never used.")703    .addError(7,  "'d' is defined but never used.")704    .addError(9,  "'bar' is defined but never used.")705    .test(code, {esnext: true, unused: true, undef: true});706  test.done();707};708exports["test: destructuring var as moz"] = function (test) {709  var code = [710    "var [ a, b, c ] = [ 1, 2, 3 ];",711    "var [ a ] = [ 1 ];",712    "var [ a ] = [ z ];",713    "var [ h, w ] = [ 'hello', 'world' ]; ",714    "var [ o ] = [ { o : 1 } ];",715    "var [ a, [ [ [ b ], c ], d ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",716    "var { foo : bar } = { foo : 1 };",717    "var [ a, { foo : bar } ] = [ 2, { foo : 1 } ];",718  ];719  TestRun(test)720    .addError(3,  "'z' is not defined.")721    .addError(8,  "'a' is defined but never used.")722    .addError(6,  "'b' is defined but never used.")723    .addError(6,  "'c' is defined but never used.")724    .addError(4,  "'h' is defined but never used.")725    .addError(4,  "'w' is defined but never used.")726    .addError(5,  "'o' is defined but never used.")727    .addError(6,  "'d' is defined but never used.")728    .addError(8,  "'bar' is defined but never used.")729    .test(code, {moz: true, unused: true, undef: true});730  test.done();731};732exports["test: destructuring var as esnext"] = function (test) {733  var code = [734    "var [ a, b, c ] = [ 1, 2, 3 ];",735    "var [ a ] = [ 1 ];",736    "var [ a ] = [ z ];",737    "var [ h, w ] = [ 'hello', 'world' ]; ",738    "var [ o ] = [ { o : 1 } ];",739    "var [ a, [ [ [ b ], c ], d ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",740    "var { foo : bar } = { foo : 1 };",741    "var [ a, { foo : bar } ] = [ 2, { foo : 1 } ];",742  ];743  TestRun(test)744    .addError(3,  "'z' is not defined.")745    .addError(8,  "'a' is defined but never used.")746    .addError(6,  "'b' is defined but never used.")747    .addError(6,  "'c' is defined but never used.")748    .addError(4,  "'h' is defined but never used.")749    .addError(4,  "'w' is defined but never used.")750    .addError(5,  "'o' is defined but never used.")751    .addError(6,  "'d' is defined but never used.")752    .addError(8,  "'bar' is defined but never used.")753    .test(code, {esnext: true, unused: true, undef: true});754  test.done();755};756exports["test: destructuring var as es5"] = function (test) {757  var code = [758    "var [ a, b, c ] = [ 1, 2, 3 ];",759    "var [ a ] = [ 1 ];",760    "var [ a ] = [ z ];",761    "var [ h, w ] = [ 'hello', 'world' ]; ",762    "var [ o ] = [ { o : 1 } ];",763    "var [ a, [ [ [ b ], c ], d ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",764    "var { foo : bar } = { foo : 1 };",765    "var [ a, { foo : bar } ] = [ 2, { foo : 1 } ];",766  ];767  TestRun(test)768    .addError(1, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")769    .addError(2, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")770    .addError(3, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")771    .addError(4, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")772    .addError(5, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")773    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")774    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")775    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")776    .addError(7, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")777    .addError(8, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")778    .addError(8, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")779    .addError(3,  "'z' is not defined.")780    .addError(8,  "'a' is defined but never used.")781    .addError(6,  "'b' is defined but never used.")782    .addError(6,  "'c' is defined but never used.")783    .addError(4,  "'h' is defined but never used.")784    .addError(4,  "'w' is defined but never used.")785    .addError(5,  "'o' is defined but never used.")786    .addError(6,  "'d' is defined but never used.")787    .addError(8,  "'bar' is defined but never used.")788    .test(code, {unused: true, undef: true}); // es5789  test.done();790};791exports["test: destructuring var as legacy JS"] = function (test) {792  var code = [793    "var [ a, b, c ] = [ 1, 2, 3 ];",794    "var [ a ] = [ 1 ];",795    "var [ a ] = [ z ];",796    "var [ h, w ] = [ 'hello', 'world' ]; ",797    "var [ o ] = [ { o : 1 } ];",798    "var [ a, [ [ [ b ], c ], d ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",799    "var { foo : bar } = { foo : 1 };",800    "var [ a, { foo : bar } ] = [ 2, { foo : 1 } ];",801  ];802  TestRun(test)803    .addError(1, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")804    .addError(2, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")805    .addError(3, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")806    .addError(4, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")807    .addError(5, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")808    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")809    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")810    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")811    .addError(7, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")812    .addError(8, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")813    .addError(8, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")814    .addError(3,  "'z' is not defined.")815    .addError(8,  "'a' is defined but never used.")816    .addError(6,  "'b' is defined but never used.")817    .addError(6,  "'c' is defined but never used.")818    .addError(4,  "'h' is defined but never used.")819    .addError(4,  "'w' is defined but never used.")820    .addError(5,  "'o' is defined but never used.")821    .addError(6,  "'d' is defined but never used.")822    .addError(8,  "'bar' is defined but never used.")823    .test(code, {es3: true, unused: true, undef: true});824  test.done();825};826exports["test: destructuring var errors"] = function (test) {827  var code = [828    "var [ a, b, c ] = [ 1, 2, 3 ];",829    "var [ a ] = [ 1 ];",830    "var [ a ] = [ z ];",831    "var [ h, w ] = [ 'hello', 'world' ]; ",832    "var [ o ] = [ { o : 1 } ];",833    "var [ a, [ [ [ b ], c ], d ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",834    "var { foo : bar } = { foo : 1 };",835    "var [ a, { foo : bar } ] = [ 2, { foo : 1 } ];",836    "var [ 1 ] = [ a ];",837    "var [ a, b; c ] = [ 1, 2, 3 ];",838    "var [ a, b, c ] = [ 1, 2; 3 ];"839  ];840  TestRun(test)841    .addError(9,  "Expected an identifier and instead saw '1'.")842    .addError(9,  "Expected ',' and instead saw '1'.")843    .addError(9,  "Expected an identifier and instead saw ']'.")844    .addError(10, "Expected ',' and instead saw ';'.")845    .addError(11, "Expected ']' to match '[' from line 11 and instead saw ';'.")846    .addError(11, "Missing semicolon.")847    .addError(11, "Expected an assignment or function call and instead saw an expression.")848    .addError(11, "Missing semicolon.")849    .addError(11, "Expected an identifier and instead saw ']'.")850    .addError(11, "Expected an assignment or function call and instead saw an expression.")851    .addError(3,  "'z' is not defined.")852    .addError(11, "'a' is defined but never used.")853    .addError(11, "'b' is defined but never used.")854    .addError(11, "'c' is defined but never used.")855    .addError(4,  "'h' is defined but never used.")856    .addError(4,  "'w' is defined but never used.")857    .addError(5,  "'o' is defined but never used.")858    .addError(6,  "'d' is defined but never used.")859    .addError(8,  "'bar' is defined but never used.")860    .test(code, {esnext: true, unused: true, undef: true});861  test.done();862};863exports["test: destructuring const as moz"] = function (test) {864  var code = [865    "const [ a, b, c ] = [ 1, 2, 3 ];",866    "const [ d ] = [ 1 ];",867    "const [ e ] = [ z ];",868    "const [ hel, wor ] = [ 'hello', 'world' ]; ",869    "const [ o ] = [ { o : 1 } ];",870    "const [ f, [ [ [ g ], h ], i ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",871    "const { foo : bar } = { foo : 1 };",872    "const [ j, { foo : foobar } ] = [ 2, { foo : 1 } ];",873    "const [ aa, bb ] = yield func();"874  ];875  TestRun(test)876    .addError(1, "'a' is defined but never used.")877    .addError(1, "'b' is defined but never used.")878    .addError(1, "'c' is defined but never used.")879    .addError(2, "'d' is defined but never used.")880    .addError(3, "'e' is defined but never used.")881    .addError(4, "'hel' is defined but never used.")882    .addError(4, "'wor' is defined but never used.")883    .addError(5, "'o' is defined but never used.")884    .addError(6, "'f' is defined but never used.")885    .addError(6, "'g' is defined but never used.")886    .addError(6, "'h' is defined but never used.")887    .addError(6, "'i' is defined but never used.")888    .addError(7, "'bar' is defined but never used.")889    .addError(8, "'j' is defined but never used.")890    .addError(8, "'foobar' is defined but never used.")891    .addError(9, "'aa' is defined but never used.")892    .addError(9, "'bb' is defined but never used.")893    .addError(3, "'z' is not defined.")894    .addError(9, "'func' is not defined.")895    .test(code, {moz: true, unused: true, undef: true});896  test.done();897};898exports["test: destructuring const as esnext"] = function (test) {899  var code = [900    "const [ a, b, c ] = [ 1, 2, 3 ];",901    "const [ d ] = [ 1 ];",902    "const [ e ] = [ z ];",903    "const [ hel, wor ] = [ 'hello', 'world' ]; ",904    "const [ o ] = [ { o : 1 } ];",905    "const [ f, [ [ [ g ], h ], i ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",906    "const { foo : bar } = { foo : 1 };",907    "const [ j, { foo : foobar } ] = [ 2, { foo : 1 } ];",908  ];909  TestRun(test)910    .addError(1, "'a' is defined but never used.")911    .addError(1, "'b' is defined but never used.")912    .addError(1, "'c' is defined but never used.")913    .addError(2, "'d' is defined but never used.")914    .addError(3, "'e' is defined but never used.")915    .addError(4, "'hel' is defined but never used.")916    .addError(4, "'wor' is defined but never used.")917    .addError(5, "'o' is defined but never used.")918    .addError(6, "'f' is defined but never used.")919    .addError(6, "'g' is defined but never used.")920    .addError(6, "'h' is defined but never used.")921    .addError(6, "'i' is defined but never used.")922    .addError(7, "'bar' is defined but never used.")923    .addError(8, "'j' is defined but never used.")924    .addError(8, "'foobar' is defined but never used.")925    .addError(3, "'z' is not defined.")926    .test(code, {esnext: true, unused: true, undef: true});927  test.done();928};929exports["test: destructuring const as es5"] = function (test) {930  var code = [931    "const [ a, b, c ] = [ 1, 2, 3 ];",932    "const [ d ] = [ 1 ];",933    "const [ e ] = [ z ];",934    "const [ hel, wor ] = [ 'hello', 'world' ]; ",935    "const [ o ] = [ { o : 1 } ];",936    "const [ f, [ [ [ g ], h ], i ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",937    "const { foo : bar } = { foo : 1 };",938    "const [ j, { foo : foobar } ] = [ 2, { foo : 1 } ];",939  ];940  TestRun(test)941    .addError(1, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")942    .addError(1, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")943    .addError(2, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")944    .addError(2, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")945    .addError(3, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")946    .addError(3, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")947    .addError(4, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")948    .addError(4, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")949    .addError(5, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")950    .addError(5, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")951    .addError(6, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")952    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")953    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")954    .addError(7, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")955    .addError(7, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")956    .addError(8, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")957    .addError(8, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")958    .addError(8, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")959    .addError(1, "'a' is defined but never used.")960    .addError(1, "'b' is defined but never used.")961    .addError(1, "'c' is defined but never used.")962    .addError(2, "'d' is defined but never used.")963    .addError(3, "'e' is defined but never used.")964    .addError(4, "'hel' is defined but never used.")965    .addError(4, "'wor' is defined but never used.")966    .addError(5, "'o' is defined but never used.")967    .addError(6, "'f' is defined but never used.")968    .addError(6, "'g' is defined but never used.")969    .addError(6, "'h' is defined but never used.")970    .addError(6, "'i' is defined but never used.")971    .addError(7, "'bar' is defined but never used.")972    .addError(8, "'j' is defined but never used.")973    .addError(8, "'foobar' is defined but never used.")974    .addError(3, "'z' is not defined.")975    .test(code, {unused: true, undef: true}); // es5976  test.done();977};978exports["test: destructuring const as legacy JS"] = function (test) {979  var code = [980    "const [ a, b, c ] = [ 1, 2, 3 ];",981    "const [ d ] = [ 1 ];",982    "const [ e ] = [ z ];",983    "const [ hel, wor ] = [ 'hello', 'world' ]; ",984    "const [ o ] = [ { o : 1 } ];",985    "const [ f, [ [ [ g ], h ], i ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",986    "const { foo : bar } = { foo : 1 };",987    "const [ j, { foo : foobar } ] = [ 2, { foo : 1 } ];",988  ];989  TestRun(test)990    .addError(1, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")991    .addError(1, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")992    .addError(2, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")993    .addError(2, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")994    .addError(3, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")995    .addError(3, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")996    .addError(4, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")997    .addError(4, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")998    .addError(5, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")999    .addError(5, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1000    .addError(6, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1001    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1002    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1003    .addError(7, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1004    .addError(7, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1005    .addError(8, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1006    .addError(8, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1007    .addError(8, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1008    .addError(1, "'a' is defined but never used.")1009    .addError(1, "'b' is defined but never used.")1010    .addError(1, "'c' is defined but never used.")1011    .addError(2, "'d' is defined but never used.")1012    .addError(3, "'e' is defined but never used.")1013    .addError(4, "'hel' is defined but never used.")1014    .addError(4, "'wor' is defined but never used.")1015    .addError(5, "'o' is defined but never used.")1016    .addError(6, "'f' is defined but never used.")1017    .addError(6, "'g' is defined but never used.")1018    .addError(6, "'h' is defined but never used.")1019    .addError(6, "'i' is defined but never used.")1020    .addError(7, "'bar' is defined but never used.")1021    .addError(8, "'j' is defined but never used.")1022    .addError(8, "'foobar' is defined but never used.")1023    .addError(3, "'z' is not defined.")1024    .test(code, {es3: true, unused: true, undef: true});1025  test.done();1026};1027exports["test: destructuring const errors"] = function (test) {1028  var code = [1029    "const [ a, b, c ] = [ 1, 2, 3 ];",1030    "const [ a, b, c ] = [ 1, 2, 3 ];",1031    "const [ 1 ] = [ a ];",1032    "const [ k, l; m ] = [ 1, 2, 3 ];",1033    "const [ n, o, p ] = [ 1, 2; 3 ];"1034  ];1035  TestRun(test)1036    .addError(2, "'b' is defined but never used.")1037    .addError(2, "'c' is defined but never used.")1038    .addError(4, "'k' is defined but never used.")1039    .addError(4, "'l' is defined but never used.")1040    .addError(4, "'m' is defined but never used.")1041    .addError(5, "'n' is defined but never used.")1042    .addError(5, "'o' is defined but never used.")1043    .addError(5, "'p' is defined but never used.")1044    .addError(2, "const 'a' has already been declared.")1045    .addError(2, "const 'b' has already been declared.")1046    .addError(2, "const 'c' has already been declared.")1047    .addError(3, "Expected an identifier and instead saw '1'.")1048    .addError(3, "Expected ',' and instead saw '1'.")1049    .addError(3, "Expected an identifier and instead saw ']'.")1050    .addError(4, "Expected ',' and instead saw ';'.")1051    .addError(5, "Expected ']' to match '[' from line 5 and instead saw ';'.")1052    .addError(5, "Missing semicolon.")1053    .addError(5, "Expected an assignment or function call and instead saw an expression.")1054    .addError(5, "Missing semicolon.")1055    .addError(5, "Expected an identifier and instead saw ']'.")1056    .addError(5, "Expected an assignment or function call and instead saw an expression.")1057    .addError(5, "Missing semicolon.")1058    .test(code, {es3: true, esnext: true, unused: true, undef: true});1059  test.done();1060};1061exports["test: destructuring globals as moz"] = function (test) {1062  var code = [1063    "var a, b, c, d, h, w, o;",1064    "[ a, b, c ] = [ 1, 2, 3 ];",1065    "[ a ] = [ 1 ];",1066    "[ a ] = [ z ];",1067    "[ h, w ] = [ 'hello', 'world' ]; ",1068    "[ o ] = [ { o : 1 } ];",1069    "[ a, [ [ [ b ], c ], d ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",1070    "[ a, { foo : b } ] = [ 2, { foo : 1 } ];",1071  ];1072  TestRun(test)1073    .addError(4,  "'z' is not defined.")1074    .test(code, {moz: true, unused: true, undef: true});1075  test.done();1076};1077exports["test: destructuring globals as esnext"] = function (test) {1078  var code = [1079    "var a, b, c, d, h, w, o;",1080    "[ a, b, c ] = [ 1, 2, 3 ];",1081    "[ a ] = [ 1 ];",1082    "[ a ] = [ z ];",1083    "[ h, w ] = [ 'hello', 'world' ]; ",1084    "[ o ] = [ { o : 1 } ];",1085    "[ a, [ [ [ b ], c ], d ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",1086    "[ a, { foo : b } ] = [ 2, { foo : 1 } ];",1087  ];1088  TestRun(test)1089    .addError(4,  "'z' is not defined.")1090    .test(code, {esnext: true, unused: true, undef: true});1091  test.done();1092};1093exports["test: destructuring globals as es5"] = function (test) {1094  var code = [1095    "var a, b, c, d, h, w, o;",1096    "[ a, b, c ] = [ 1, 2, 3 ];",1097    "[ a ] = [ 1 ];",1098    "[ a ] = [ z ];",1099    "[ h, w ] = [ 'hello', 'world' ]; ",1100    "[ o ] = [ { o : 1 } ];",1101    "[ a, [ [ [ b ], c ], d ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",1102    "[ a, { foo : b } ] = [ 2, { foo : 1 } ];",1103  ];1104  TestRun(test)1105    .addError(4,  "'z' is not defined.")1106    .addError(2, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1107    .addError(3, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1108    .addError(4, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1109    .addError(5, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1110    .addError(6, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1111    .addError(7, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1112    .addError(8, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1113    .test(code, {unused: true, undef: true}); // es51114  test.done();1115};1116exports["test: destructuring globals as legacy JS"] = function (test) {1117  var code = [1118    "var a, b, c, d, h, w, o;",1119    "[ a, b, c ] = [ 1, 2, 3 ];",1120    "[ a ] = [ 1 ];",1121    "[ a ] = [ z ];",1122    "[ h, w ] = [ 'hello', 'world' ]; ",1123    "[ o ] = [ { o : 1 } ];",1124    "[ a, [ [ [ b ], c ], d ] ] = [ 1, [ [ [ 2 ], 3], 4 ] ];",1125    "[ a, { foo : b } ] = [ 2, { foo : 1 } ];",1126  ];1127  TestRun(test)1128    .addError(4,  "'z' is not defined.")1129    .addError(2, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1130    .addError(3, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1131    .addError(4, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1132    .addError(5, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1133    .addError(6, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1134    .addError(7, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1135    .addError(8, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1136    .test(code, {es3: true, unused: true, undef: true});1137  test.done();1138};1139exports["test: destructuring globals with syntax error"] = function (test) {1140  var code = [1141    "var a, b, c;",1142    "[ a ] = [ z ];",1143    "[ 1 ] = [ a ];",1144    "[ a, b; c ] = [ 1, 2, 3 ];",1145    "[ a, b, c ] = [ 1, 2; 3 ];"1146  ];1147  TestRun(test)1148    .addError(4, "Expected ']' to match '[' from line 4 and instead saw ';'.")1149    .addError(4, "Expected an assignment or function call and instead saw an expression.")1150    .addError(4, "Missing semicolon.")1151    .addError(4, "Expected an assignment or function call and instead saw an expression.")1152    .addError(4, "Missing semicolon.")1153    .addError(4, "Expected an identifier and instead saw ']'.")1154    .addError(4, "Expected an operator and instead saw '='.")1155    .addError(4, "Expected an operator and instead saw '['.")1156    .addError(4, "Expected an assignment or function call and instead saw an expression.")1157    .addError(4, "Missing semicolon.")1158    .addError(4, "Expected an assignment or function call and instead saw an expression.")1159    .addError(4, "Expected an assignment or function call and instead saw an expression.")1160    .addError(4, "Missing semicolon.")1161    .addError(4, "Expected an identifier and instead saw ']'.")1162    .addError(4, "Expected an assignment or function call and instead saw an expression.")1163    .addError(5, "Expected ']' to match '[' from line 5 and instead saw ';'.")1164    .addError(5, "Missing semicolon.")1165    .addError(5, "Expected an assignment or function call and instead saw an expression.")1166    .addError(5, "Missing semicolon.")1167    .addError(5, "Expected an identifier and instead saw ']'.")1168    .addError(5, "Expected an assignment or function call and instead saw an expression.")1169    .addError(2,  "'z' is not defined.")1170    .test(code, {esnext: true, unused: true, undef: true});1171  test.done();1172};1173exports["test: destructuring assign of empty values as moz"] = function (test) {1174  var code = [1175    "var [ a ] = [ 1, 2 ];",1176    "var [ c, d ] = [ 1 ];",1177    "var [ e, , f ] = [ 3, , 4 ];"1178  ];1179  TestRun(test)1180    .addError(1, "'a' is defined but never used.")1181    .addError(2, "'c' is defined but never used.")1182    .addError(2, "'d' is defined but never used.")1183    .addError(3, "'e' is defined but never used.")1184    .addError(3, "'f' is defined but never used.")1185    .test(code, {moz: true, unused: true, undef: true, laxcomma: true});1186  test.done();1187};1188exports["test: destructuring assign of empty values as esnext"] = function (test) {1189  var code = [1190    "var [ a ] = [ 1, 2 ];",1191    "var [ c, d ] = [ 1 ];",1192    "var [ e, , f ] = [ 3, , 4 ];"1193  ];1194  TestRun(test)1195    .addError(1, "'a' is defined but never used.")1196    .addError(2, "'c' is defined but never used.")1197    .addError(2, "'d' is defined but never used.")1198    .addError(3, "'e' is defined but never used.")1199    .addError(3, "'f' is defined but never used.")1200    .test(code, {esnext: true, unused: true, undef: true});1201  test.done();1202};1203exports["test: destructuring assign of empty values as es5"] = function (test) {1204  var code = [1205    "var [ a ] = [ 1, 2 ];",1206    "var [ c, d ] = [ 1 ];",1207    "var [ e, , f ] = [ 3, , 4 ];"1208  ];1209  TestRun(test)1210    .addError(1, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1211    .addError(1, "'a' is defined but never used.")1212    .addError(2, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1213    .addError(2, "'c' is defined but never used.")1214    .addError(2, "'d' is defined but never used.")1215    .addError(3, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1216    .addError(3, "'e' is defined but never used.")1217    .addError(3, "'f' is defined but never used.")1218    .test(code, {unused: true, undef: true}); // es51219  test.done();1220};1221exports["test: destructuring assign of empty values as JS legacy"] = function (test) {1222  var code = [1223    "var [ a ] = [ 1, 2 ];",1224    "var [ c, d ] = [ 1 ];",1225    "var [ e, , f ] = [ 3, , 4 ];"1226  ];1227  TestRun(test)1228    .addError(1, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1229    .addError(1, "'a' is defined but never used.")1230    .addError(2, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1231    .addError(2, "'c' is defined but never used.")1232    .addError(2, "'d' is defined but never used.")1233    .addError(3, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1234    .addError(3, "'e' is defined but never used.")1235    .addError(3, "'f' is defined but never used.")1236    .addError(3, "Extra comma. (it breaks older versions of IE)")1237    .test(code, {es3: true, unused: true, undef: true});1238  test.done();1239};1240exports["test: array element assignment inside array"] = function (test) {1241  var code = [1242    "var a1 = {};",1243    "var a2 = [function f() {a1[0] = 1;}];",1244  ];1245  TestRun(test)1246    .test(code);1247  test.done();1248};1249exports["test: let statement as moz"] = function (test) {1250  var code = [1251    "let x = 1;",1252    "{",1253    "  let y = 3 ;",1254    "  {",1255    "    let z = 2;",1256    "    print(x + ' ' + y + ' ' + z);",1257    "  }",1258    "  print(x + ' ' + y);",1259    "}",1260    "print(x);"1261  ];1262  TestRun(test)1263    .test(code, {moz: true, unused: true, undef: true, predef: ["print"]});1264  test.done();1265};1266exports["test: let statement as esnext"] = function (test) {1267  var code = [1268    "let x = 1;",1269    "{",1270    "  let y = 3 ;",1271    "  {",1272    "    let z = 2;",1273    "    print(x + ' ' + y + ' ' + z);",1274    "  }",1275    "  print(x + ' ' + y);",1276    "}",1277    "print(x);"1278  ];1279  TestRun(test)1280    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});1281  test.done();1282};1283exports["test: let statement as es5"] = function (test) {1284  var code = [1285    "let x = 1;",1286    "{",1287    "  let y = 3 ;",1288    "  {",1289    "    let z = 2;",1290    "    print(x + ' ' + y + ' ' + z);",1291    "  }",1292    "  print(x + ' ' + y);",1293    "}",1294    "print(x);"1295  ];1296  TestRun(test)1297    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1298    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1299    .addError(5, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1300    .test(code, {unused: true, undef: true, predef: ["print"]}); // es51301  test.done();1302};1303exports["test: let statement as legacy JS"] = function (test) {1304  var code = [1305    "let x = 1;",1306    "{",1307    "  let y = 3 ;",1308    "  {",1309    "    let z = 2;",1310    "    print(x + ' ' + y + ' ' + z);",1311    "  }",1312    "  print(x + ' ' + y);",1313    "}",1314    "print(x);"1315  ];1316  TestRun(test)1317    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1318    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1319    .addError(5, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1320    .test(code, {es3: true, unused: true, undef: true, predef: ["print"]});1321  test.done();1322};1323exports["test: let statement out of scope as moz"] = function (test) {1324  var code = [1325    "let x = 1;",1326    "{",1327    "  let y = 3 ;",1328    "  {",1329    "    let z = 2;",1330    "  }",1331    "  print(z);",1332    "}",1333    "print(y);",1334  ];1335  TestRun(test)1336    .addError(1, "'x' is defined but never used.")1337    .addError(5, "'z' is defined but never used.")1338    .addError(3, "'y' is defined but never used.")1339    .addError(7, "'z' is not defined.")1340    .addError(9, "'y' is not defined.")1341    .test(code, {moz: true, unused: true, undef: true, predef: ["print"]});1342  test.done();1343};1344exports["test: let statement out of scope as esnext"] = function (test) {1345  var code = [1346    "let x = 1;",1347    "{",1348    "  let y = 3 ;",1349    "  {",1350    "    let z = 2;",1351    "  }",1352    "  print(z);",1353    "}",1354    "print(y);",1355  ];1356  TestRun(test)1357    .addError(1, "'x' is defined but never used.")1358    .addError(5, "'z' is defined but never used.")1359    .addError(3, "'y' is defined but never used.")1360    .addError(7, "'z' is not defined.")1361    .addError(9, "'y' is not defined.")1362    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});1363  test.done();1364};1365exports["test: let statement out of scope as es5"] = function (test) {1366  var code = [1367    "let x = 1;",1368    "{",1369    "  let y = 3 ;",1370    "  {",1371    "    let z = 2;",1372    "  }",1373    "  print(z);",1374    "}",1375    "print(y);",1376  ];1377  TestRun(test)1378    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1379    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1380    .addError(5, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1381    .addError(1, "'x' is defined but never used.")1382    .addError(5, "'z' is defined but never used.")1383    .addError(3, "'y' is defined but never used.")1384    .addError(7, "'z' is not defined.")1385    .addError(9, "'y' is not defined.")1386    .test(code, {unused: true, undef: true, predef: ["print"]}); // es51387  test.done();1388};1389exports["test: let statement out of scope as legacy JS"] = function (test) {1390  var code = [1391    "let x = 1;",1392    "{",1393    "  let y = 3 ;",1394    "  {",1395    "    let z = 2;",1396    "  }",1397    "  print(z);",1398    "}",1399    "print(y);",1400  ];1401  TestRun(test)1402    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1403    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1404    .addError(5, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1405    .addError(1, "'x' is defined but never used.")1406    .addError(5, "'z' is defined but never used.")1407    .addError(3, "'y' is defined but never used.")1408    .addError(7, "'z' is not defined.")1409    .addError(9, "'y' is not defined.")1410    .test(code, {es3: true, unused: true, undef: true, predef: ["print"]});1411  test.done();1412};1413exports["test: let statement in functions as moz"] = function (test) {1414  var code = [1415    "let x = 1;",1416    "function foo() {",1417    "  let y = 3 ;",1418    "  function bar() {",1419    "    let z = 2;",1420    "    print(x);",1421    "    print(z);",1422    "  }",1423    "  print(y);",1424    "  bar();",1425    "}",1426    "foo();"1427  ];1428  TestRun(test)1429    .test(code, {moz: true, unused: true, undef: true, predef: ["print"]});1430  test.done();1431};1432exports["test: let statement in functions as esnext"] = function (test) {1433  var code = [1434    "let x = 1;",1435    "function foo() {",1436    "  let y = 3 ;",1437    "  function bar() {",1438    "    let z = 2;",1439    "    print(x);",1440    "    print(z);",1441    "  }",1442    "  print(y);",1443    "  bar();",1444    "}",1445    "foo();"1446  ];1447  TestRun(test)1448    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});1449  test.done();1450};1451exports["test: let statement in functions as es5"] = function (test) {1452  var code = [1453    "let x = 1;",1454    "function foo() {",1455    "  let y = 3 ;",1456    "  function bar() {",1457    "    let z = 2;",1458    "    print(x);",1459    "    print(z);",1460    "  }",1461    "  print(y);",1462    "  bar();",1463    "}",1464    "foo();"1465  ];1466  TestRun(test)1467    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1468    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1469    .addError(5, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1470    .test(code, {unused: true, undef: true, predef: ["print"]}); // es51471  test.done();1472};1473exports["test: let statement in functions as legacy JS"] = function (test) {1474  var code = [1475    "let x = 1;",1476    "function foo() {",1477    "  let y = 3 ;",1478    "  function bar() {",1479    "    let z = 2;",1480    "    print(x);",1481    "    print(z);",1482    "  }",1483    "  print(y);",1484    "  bar();",1485    "}",1486    "foo();"1487  ];1488  TestRun(test)1489    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1490    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1491    .addError(5, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1492    .test(code, {es3: true, unused: true, undef: true, predef: ["print"]});1493  test.done();1494};1495exports["test: let statement not in scope as moz"] = function (test) {1496  var code = [1497    "let x = 1;",1498    "function foo() {",1499    "  let y = 3 ;",1500    "  let bar = function () {",1501    "    print(x);",1502    "    let z = 2;",1503    "  };",1504    "  print(z);",1505    "}",1506    "print(y);",1507    "bar();",1508    "foo();",1509  ];1510  TestRun(test)1511    .addError(6, "'z' is defined but never used.")1512    .addError(3, "'y' is defined but never used.")1513    .addError(4, "'bar' is defined but never used.")1514    .addError(8, "'z' is not defined.")1515    .addError(10, "'y' is not defined.")1516    .addError(11, "'bar' is not defined.")1517    .test(code, {moz: true, unused: true, undef: true, predef: ["print"]});1518  test.done();1519};1520exports["test: let statement not in scope as esnext"] = function (test) {1521  var code = [1522    "let x = 1;",1523    "function foo() {",1524    "  let y = 3 ;",1525    "  let bar = function () {",1526    "    print(x);",1527    "    let z = 2;",1528    "  };",1529    "  print(z);",1530    "}",1531    "print(y);",1532    "bar();",1533    "foo();",1534  ];1535  TestRun(test)1536    .addError(6, "'z' is defined but never used.")1537    .addError(3, "'y' is defined but never used.")1538    .addError(4, "'bar' is defined but never used.")1539    .addError(8, "'z' is not defined.")1540    .addError(10, "'y' is not defined.")1541    .addError(11, "'bar' is not defined.")1542    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});1543  test.done();1544};1545exports["test: let statement not in scope as es5"] = function (test) {1546  var code = [1547    "let x = 1;",1548    "function foo() {",1549    "  let y = 3 ;",1550    "  let bar = function () {",1551    "    print(x);",1552    "    let z = 2;",1553    "  };",1554    "  print(z);",1555    "}",1556    "print(y);",1557    "bar();",1558    "foo();",1559  ];1560  TestRun(test)1561    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1562    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1563    .addError(4, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1564    .addError(6, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1565    .addError(6, "'z' is defined but never used.")1566    .addError(3, "'y' is defined but never used.")1567    .addError(4, "'bar' is defined but never used.")1568    .addError(8, "'z' is not defined.")1569    .addError(10, "'y' is not defined.")1570    .addError(11, "'bar' is not defined.")1571    .test(code, {unused: true, undef: true, predef: ["print"]}); // es51572  test.done();1573};1574exports["test: let statement not in scope as legacy JS"] = function (test) {1575  var code = [1576    "let x = 1;",1577    "function foo() {",1578    "  let y = 3 ;",1579    "  let bar = function () {",1580    "    print(x);",1581    "    let z = 2;",1582    "  };",1583    "  print(z);",1584    "}",1585    "print(y);",1586    "bar();",1587    "foo();",1588  ];1589  TestRun(test)1590    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1591    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1592    .addError(4, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1593    .addError(6, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1594    .addError(6, "'z' is defined but never used.")1595    .addError(3, "'y' is defined but never used.")1596    .addError(4, "'bar' is defined but never used.")1597    .addError(8, "'z' is not defined.")1598    .addError(10, "'y' is not defined.")1599    .addError(11, "'bar' is not defined.")1600    .test(code, {es3: true, unused: true, undef: true, predef: ["print"]});1601  test.done();1602};1603exports["test: let statement in for loop as moz"] = function (test) {1604  var code = [1605    "var obj={foo: 'bar', bar: 'foo'};",1606    "for ( let [n, v] in Iterator(obj) ) {",1607    "  print('Name: ' + n + ', Value: ' + v);",1608    "}",1609    "for (let i in [1, 2, 3, 4]) {",1610    "  print(i);",1611    "}",1612    "for (let i in [1, 2, 3, 4]) {",1613    "  print(i);",1614    "}",1615    "for (let i = 0; i<15; ++i) {",1616    "  print(i);",1617    "}",1618    "for (let i=i ; i < 10 ; i++ ) {",1619    "print(i);",1620    "}"1621  ];1622  TestRun(test)1623    .test(code, {moz: true, unused: true, undef: true, predef: ["print", "Iterator"]});1624  test.done();1625};1626exports["test: let statement in for loop as esnext"] = function (test) {1627  var code = [1628    "var obj={foo: 'bar', bar: 'foo'};",1629    "for ( let [n, v] in Iterator(obj) ) {",1630    "  print('Name: ' + n + ', Value: ' + v);",1631    "}",1632    "for (let i in [1, 2, 3, 4]) {",1633    "  print(i);",1634    "}",1635    "for (let i in [1, 2, 3, 4]) {",1636    "  print(i);",1637    "}",1638    "for (let i = 0; i<15; ++i) {",1639    "  print(i);",1640    "}",1641    "for (let i=i ; i < 10 ; i++ ) {",1642    "print(i);",1643    "}"1644  ];1645  TestRun(test)1646    .test(code, {esnext: true, unused: true, undef: true, predef: ["print", "Iterator"]});1647  test.done();1648};1649exports["test: let statement in for loop as es5"] = function (test) {1650  var code = [1651    "var obj={foo: 'bar', bar: 'foo'};",1652    "for ( let [n, v] in Iterator(obj) ) {",1653    "  print('Name: ' + n + ', Value: ' + v);",1654    "}",1655    "for (let i in [1, 2, 3, 4]) {",1656    "  print(i);",1657    "}",1658    "for (let i in [1, 2, 3, 4]) {",1659    "  print(i);",1660    "}",1661    "for (let i = 0; i<15; ++i) {",1662    "  print(i);",1663    "}",1664    "for (let i=i ; i < 10 ; i++ ) {",1665    "print(i);",1666    "}"1667  ];1668  TestRun(test)1669    .addError(2, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1670    .addError(2, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1671    .addError(5, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1672    .addError(8, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1673    .addError(11, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1674    .addError(14, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1675    .test(code, {unused: true, undef: true, predef: ["print", "Iterator"]}); // es51676  test.done();1677};1678exports["test: let statement in for loop as legacy JS"] = function (test) {1679  var code = [1680    "var obj={foo: 'bar', bar: 'foo'};",1681    "for ( let [n, v] in Iterator(obj) ) {",1682    "  print('Name: ' + n + ', Value: ' + v);",1683    "}",1684    "for (let i in [1, 2, 3, 4]) {",1685    "  print(i);",1686    "}",1687    "for (let i in [1, 2, 3, 4]) {",1688    "  print(i);",1689    "}",1690    "for (let i = 0; i<15; ++i) {",1691    "  print(i);",1692    "}",1693    "for (let i=i ; i < 10 ; i++ ) {",1694    "print(i);",1695    "}"1696  ];1697  TestRun(test)1698    .addError(2, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1699    .addError(2, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1700    .addError(5, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1701    .addError(8, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1702    .addError(11, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1703    .addError(14, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1704    .test(code, {es3: true, unused: true, undef: true, predef: ["print", "Iterator"]});1705  test.done();1706};1707exports["test: let statement in destructured for loop as moz"] = function (test) {1708  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.71709  var code = [1710    "var people = [",1711    "{",1712    "  name: 'Mike Smith',",1713    "  family: {",1714    "  mother: 'Jane Smith',",1715    "  father: 'Harry Smith',",1716    "  sister: 'Samantha Smith'",1717    "  },",1718    "  age: 35",1719    "},",1720    "{",1721    "  name: 'Tom Jones',",1722    "  family: {",1723    "  mother: 'Norah Jones',",1724    "  father: 'Richard Jones',",1725    "  brother: 'Howard Jones'",1726    "  },",1727    "  age: 25",1728    "}",1729    "];",1730    "for (let {name: n, family: { father: f } } in people) {",1731    "print('Name: ' + n + ', Father: ' + f);",1732    "}"1733  ];1734  TestRun(test)1735    .test(code, {moz: true, unused: true,1736           undef: true, predef: ["print"]});1737  test.done();1738};1739exports["test: let statement in destructured for loop as esnext"] = function (test) {1740  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.71741  var code = [1742    "var people = [",1743    "{",1744    "  name: 'Mike Smith',",1745    "  family: {",1746    "  mother: 'Jane Smith',",1747    "  father: 'Harry Smith',",1748    "  sister: 'Samantha Smith'",1749    "  },",1750    "  age: 35",1751    "},",1752    "{",1753    "  name: 'Tom Jones',",1754    "  family: {",1755    "  mother: 'Norah Jones',",1756    "  father: 'Richard Jones',",1757    "  brother: 'Howard Jones'",1758    "  },",1759    "  age: 25",1760    "}",1761    "];",1762    "for (let {name: n, family: { father: f } } in people) {",1763    "print('Name: ' + n + ', Father: ' + f);",1764    "}"1765  ];1766  TestRun(test)1767    .test(code, {esnext: true, unused: true,1768           undef: true, predef: ["print"]});1769  test.done();1770};1771exports["test: let statement in destructured for loop as es5"] = function (test) {1772  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.71773  var code = [1774    "var people = [",1775    "{",1776    "  name: 'Mike Smith',",1777    "  family: {",1778    "  mother: 'Jane Smith',",1779    "  father: 'Harry Smith',",1780    "  sister: 'Samantha Smith'",1781    "  },",1782    "  age: 35",1783    "},",1784    "{",1785    "  name: 'Tom Jones',",1786    "  family: {",1787    "  mother: 'Norah Jones',",1788    "  father: 'Richard Jones',",1789    "  brother: 'Howard Jones'",1790    "  },",1791    "  age: 25",1792    "}",1793    "];",1794    "for (let {name: n, family: { father: f } } in people) {",1795    "print('Name: ' + n + ', Father: ' + f);",1796    "}"1797  ];1798  TestRun(test)1799    .addError(21, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1800    .addError(21, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1801    .test(code, {unused: true, undef: true, predef: ["print"]}); // es51802  test.done();1803};1804exports["test: let statement in destructured for loop as legacy JS"] = function (test) {1805  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.71806  var code = [1807    "var people = [",1808    "{",1809    "  name: 'Mike Smith',",1810    "  family: {",1811    "  mother: 'Jane Smith',",1812    "  father: 'Harry Smith',",1813    "  sister: 'Samantha Smith'",1814    "  },",1815    "  age: 35",1816    "},",1817    "{",1818    "  name: 'Tom Jones',",1819    "  family: {",1820    "  mother: 'Norah Jones',",1821    "  father: 'Richard Jones',",1822    "  brother: 'Howard Jones'",1823    "  },",1824    "  age: 25",1825    "}",1826    "];",1827    "for (let {name: n, family: { father: f } } in people) {",1828    "print('Name: ' + n + ', Father: ' + f);",1829    "}"1830  ];1831  TestRun(test)1832    .addError(21, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1833    .addError(21, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1834    .test(code, {es3: true, unused: true, undef: true, predef: ["print"]});1835  test.done();1836};1837exports["test: let statement (as seen in jetpack)"] = function (test) {1838  // Example taken from jetpack/addons sdk library from Mozilla project1839  var code = [1840    "const { Cc, Ci } = require('chrome');",1841    "// add a text/unicode flavor (html converted to plain text)",1842    "let (str = Cc['@mozilla.org/supports-string;1'].",1843    "            createInstance(Ci.nsISupportsString),",1844    "    converter = Cc['@mozilla.org/feed-textconstruct;1'].",1845    "                createInstance(Ci.nsIFeedTextConstruct))",1846    "{",1847    "converter.type = 'html';",1848    "converter.text = options.data;",1849    "str.data = converter.plainText();",1850    "xferable.addDataFlavor('text/unicode');",1851    "xferable.setTransferData('text/unicode', str, str.data.length * 2);",1852    "}"1853  ];1854  TestRun(test)1855    .test(code, {moz: true, unused: true, undef: true,1856           predef: ["require", "xferable", "options"]});1857  test.done();1858};1859exports["test: let statement (as seen in jetpack) as esnext"] = function (test) {1860  // Example taken from jetpack/addons sdk library from Mozilla project1861  var code = [1862    "const { Cc, Ci } = require('chrome');",1863    "// add a text/unicode flavor (html converted to plain text)",1864    "let (str = Cc['@mozilla.org/supports-string;1'].",1865    "            createInstance(Ci.nsISupportsString),",1866    "    converter = Cc['@mozilla.org/feed-textconstruct;1'].",1867    "                createInstance(Ci.nsIFeedTextConstruct))",1868    "{",1869    "converter.type = 'html';",1870    "converter.text = options.data;",1871    "str.data = converter.plainText();",1872    "xferable.addDataFlavor('text/unicode');",1873    "xferable.setTransferData('text/unicode', str, str.data.length * 2);",1874    "}"1875  ];1876  TestRun(test)1877    .addError(3, "'let block' is only available in Mozilla JavaScript extensions (use moz option).")1878    .test(code, {esnext: true, unused: true, undef: true,1879           predef: ["require", "xferable", "options"]});1880  test.done();1881};1882exports["test: let statement (as seen in jetpack) as es5"] = function (test) {1883  // Example taken from jetpack/addons sdk library from Mozilla project1884  var code = [1885    "const { Cc, Ci } = require('chrome');",1886    "// add a text/unicode flavor (html converted to plain text)",1887    "let (str = Cc['@mozilla.org/supports-string;1'].",1888    "            createInstance(Ci.nsISupportsString),",1889    "    converter = Cc['@mozilla.org/feed-textconstruct;1'].",1890    "                createInstance(Ci.nsIFeedTextConstruct))",1891    "{",1892    "converter.type = 'html';",1893    "converter.text = options.data;",1894    "str.data = converter.plainText();",1895    "xferable.addDataFlavor('text/unicode');",1896    "xferable.setTransferData('text/unicode', str, str.data.length * 2);",1897    "}"1898  ];1899  TestRun(test)1900    .addError(1, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1901    .addError(1, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1902    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1903    .addError(3, "'let block' is only available in Mozilla JavaScript extensions (use moz option).")1904    .test(code, {unused: true, undef: true,1905           predef: ["require", "xferable", "options"]}); // es51906  test.done();1907};1908exports["test: let statement (as seen in jetpack) as legacy JS"] = function (test) {1909  // Example taken from jetpack/addons sdk library from Mozilla project1910  var code = [1911    "const { Cc, Ci } = require('chrome');",1912    "// add a text/unicode flavor (html converted to plain text)",1913    "let (str = Cc['@mozilla.org/supports-string;1'].",1914    "            createInstance(Ci.nsISupportsString),",1915    "    converter = Cc['@mozilla.org/feed-textconstruct;1'].",1916    "                createInstance(Ci.nsIFeedTextConstruct))",1917    "{",1918    "converter.type = 'html';",1919    "converter.text = options.data;",1920    "str.data = converter.plainText();",1921    "xferable.addDataFlavor('text/unicode');",1922    "xferable.setTransferData('text/unicode', str, str.data.length * 2);",1923    "}"1924  ];1925  TestRun(test)1926    .addError(1, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1927    .addError(1, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1928    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1929    .addError(3, "'let block' is only available in Mozilla JavaScript extensions (use moz option).")1930    .test(code, {es3: true, unused: true, undef: true,1931           predef: ["require", "xferable", "options"]});1932  test.done();1933};1934exports["test: let block and let expression"] = function (test) {1935  // Example taken from jetpack/addons sdk library from Mozilla project1936  var code = [1937    "let (x=1, y=2, z=3)",1938    "{",1939    "  let(t=4) print(x, y, z, t);",1940    "  print(let(u=4) u,x);",1941    "}"1942  ];1943  TestRun(test)1944    .test(code, {moz: true, unused: true, undef: true, predef: ["print"]});1945  test.done();1946};1947exports["test: let block and let expression as esnext"] = function (test) {1948  // Example taken from jetpack/addons sdk library from Mozilla project1949  var code = [1950    "let (x=1, y=2, z=3)",1951    "{",1952    "  let(t=4) print(x, y, z, t);",1953    "  print(let(u=4) u,x);",1954    "}"1955  ];1956  TestRun(test)1957    .addError(1, "'let block' is only available in Mozilla JavaScript extensions (use moz option).")1958    .addError(3, "'let block' is only available in Mozilla JavaScript extensions (use moz option).")1959    .addError(4, "'let expressions' is only available in Mozilla JavaScript extensions " +1960      "(use moz option).")1961    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});1962  test.done();1963};1964exports["test: let block and let expression as es5"] = function (test) {1965  // Example taken from jetpack/addons sdk library from Mozilla project1966  var code = [1967    "let (x=1, y=2, z=3)",1968    "{",1969    "  let(t=4) print(x, y, z, t);",1970    "  print(let(u=4) u,x);",1971    "}"1972  ];1973  TestRun(test)1974    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1975    .addError(1, "'let block' is only available in Mozilla JavaScript extensions (use moz option).")1976    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1977    .addError(3, "'let block' is only available in Mozilla JavaScript extensions (use moz option).")1978    .addError(4, "'let expressions' is only available in Mozilla JavaScript extensions " +1979      "(use moz option).")1980    .addError(4, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1981    .test(code, {unused: true, undef: true, predef: ["print"]}); // es51982  test.done();1983};1984exports["test: let block and let expression as legacy JS"] = function (test) {1985  // Example taken from jetpack/addons sdk library from Mozilla project1986  var code = [1987    "let (x=1, y=2, z=3)",1988    "{",1989    "  let(t=4) print(x, y, z, t);",1990    "  print(let(u=4) u,x);",1991    "}"1992  ];1993  TestRun(test)1994    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1995    .addError(1, "'let block' is only available in Mozilla JavaScript extensions (use moz option).")1996    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")1997    .addError(3, "'let block' is only available in Mozilla JavaScript extensions (use moz option).")1998    .addError(4, "'let expressions' is only available in Mozilla JavaScript extensions " +1999      "(use moz option).")2000    .addError(4, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2001    .test(code, {es3: true, unused: true, undef: true, predef: ["print"]});2002  test.done();2003};2004exports["make sure let variables are not treated as globals"] = function (test) {2005  // This is a regression test for GH-13622006  var code = [2007    "function sup() {",2008      "if (true) {",2009        "let closed = 1;",2010        "closed = 2;",2011      "}",2012      "if (true) {",2013        "if (true) {",2014          "let closed = 1;",2015          "closed = 2;",2016        "}",2017      "}",2018    "}"2019  ];2020  TestRun(test).test(code, { esnext: true, browser: true });2021  test.done();2022};2023exports["make sure var variables can shadow let variables"] = function (test) {2024  // This is a regression test for GH-13942025  var code = [2026    "let a = 1;",2027    "let b = 2;",2028    "var c = 3;",2029    "function sup(a) {",2030      "var b = 4;",2031      "let c = 5;",2032      "let d = 6;",2033      "if (false) {",2034        "var d = 7;",2035      "}",2036      "return b + c + a + d;",2037    "}",2038    "sup();"2039  ];2040  TestRun(test)2041    .addError(1, "'a' is defined but never used.")2042    .addError(2, "'b' is defined but never used.")2043    .addError(3, "'c' is defined but never used.")2044    .addError(7, "'d' is defined but never used.")2045    .test(code, { esnext: true, unused: true, undef: true, funcscope: true });2046  test.done();2047};2048exports["test destructuring function as moz"] = function (test) {2049  // Example from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72050  var code = [2051    "function userId({id}) {",2052    "  return id;",2053    "}",2054    "function whois({displayName: displayName, fullName: {firstName: name}}) {",2055    "  print(displayName + ' is ' + name);",2056    "}",2057    "var user = {id: 42, displayName: 'jdoe', fullName: {firstName: 'John', lastName: 'Doe'}};",2058    "print('userId: ' + userId(user));",2059    "whois(user);"2060  ];2061  TestRun(test)2062    .test(code, {moz: true, unused: true, undef: true, predef: ["print"]});2063  test.done();2064};2065exports["test destructuring function as esnext"] = function (test) {2066  // Example from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72067  var code = [2068    "function userId({id}) {",2069    "  return id;",2070    "}",2071    "function whois({displayName: displayName, fullName: {firstName: name}}) {",2072    "  print(displayName + ' is ' + name);",2073    "}",2074    "var user = {id: 42, displayName: 'jdoe', fullName: {firstName: 'John', lastName: 'Doe'}};",2075    "print('userId: ' + userId(user));",2076    "whois(user);"2077  ];2078  TestRun(test)2079    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});2080  test.done();2081};2082exports["test destructuring function as es5"] = function (test) {2083  // Example from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72084  var code = [2085    "function userId({id}) {",2086    "  return id;",2087    "}",2088    "function whois({displayName: displayName, fullName: {firstName: name}}) {",2089    "  print(displayName + ' is ' + name);",2090    "}",2091    "var user = {id: 42, displayName: 'jdoe', fullName: {firstName: 'John', lastName: 'Doe'}};",2092    "print('userId: ' + userId(user));",2093    "whois(user);"2094  ];2095  TestRun(test)2096    .addError(1, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2097    .addError(4, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2098    .addError(4, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2099    .test(code, {unused: true, undef: true, predef: ["print"]}); // es52100  test.done();2101};2102exports["test destructuring function as legacy JS"] = function (test) {2103  // Example from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72104  var code = [2105    "function userId({id}) {",2106    "  return id;",2107    "}",2108    "function whois({displayName: displayName, fullName: {firstName: name}}) {",2109    "  print(displayName + ' is ' + name);",2110    "}",2111    "var user = {id: 42, displayName: 'jdoe', fullName: {firstName: 'John', lastName: 'Doe'}};",2112    "print('userId: ' + userId(user));",2113    "whois(user);"2114  ];2115  TestRun(test)2116    .addError(1, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2117    .addError(4, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2118    .addError(4, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2119    .test(code, {es3: true, unused: true, undef: true, predef: ["print"]});2120  test.done();2121};2122exports["test: invalid for each"] = function (test) {2123  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72124  var code = [2125    "for each (let i = 0; i<15; ++i) {",2126    "  print(i);",2127    "}"2128  ];2129  TestRun(test)2130    .addError(1, "Invalid for each loop.")2131    .test(code, {moz: true, unused: true, undef: true, predef: ["print"]});2132  test.done();2133};2134exports["test: invalid for each as esnext"] = function (test) {2135  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72136  var code = [2137    "for each (let i = 0; i<15; ++i) {",2138    "  print(i);",2139    "}"2140  ];2141  TestRun(test)2142    .addError(1, "Invalid for each loop.")2143    .addError(1, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2144    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});2145  test.done();2146};2147exports["test: invalid for each as ES5"] = function (test) {2148  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72149  var code = [2150    "for each (let i = 0; i<15; ++i) {",2151    "  print(i);",2152    "}"2153  ];2154  TestRun(test)2155    .addError(1, "Invalid for each loop.")2156    .addError(1, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2157    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2158    .test(code, {unused: true, undef: true, predef: ["print"]}); // es52159  test.done();2160};2161exports["test: invalid for each as legacy JS"] = function (test) {2162  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72163  var code = [2164    "for each (let i = 0; i<15; ++i) {",2165    "  print(i);",2166    "}"2167  ];2168  TestRun(test)2169    .addError(1, "Invalid for each loop.")2170    .addError(1, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2171    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2172    .test(code, {es3: true, unused: true, undef: true, predef: ["print"]});2173  test.done();2174};2175exports["test: esnext generator"] = function (test) {2176  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72177  var code = [2178    "function* fib() {",2179    "  var i = 0, j = 1;",2180    "  while (true) {",2181    "    yield i;",2182    "    [i, j] = [j, i + j];",2183    "  }",2184    "}",2185    "var g = fib();",2186    "for (var i = 0; i < 10; i++)",2187    "  print(g.next());"2188  ];2189  TestRun(test)2190    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});2191  test.done();2192};2193exports["test: esnext generator as moz extension"] = function (test) {2194  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72195  var code = [2196    "function* fib() {",2197    "  var i = 0, j = 1;",2198    "  while (true) {",2199    "    yield i;",2200    "    [i, j] = [j, i + j];",2201    "  }",2202    "}",2203    "var g = fib();",2204    "for (var i = 0; i < 10; i++)",2205    "  print(g.next());"2206  ];2207  TestRun(test)2208    .addError(1, "'function*' is only available in ES6 (use esnext option).")2209    .test(code, {moz: true, unused: true, undef: true, predef: ["print"]});2210  test.done();2211};2212exports["test: esnext generator as es5"] = function (test) {2213  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72214  var code = [2215    "function* fib() {",2216    "  var i = 0, j = 1;",2217    "  while (true) {",2218    "    yield i;",2219    "    [i, j] = [j, i + j];",2220    "  }",2221    "}",2222    "var g = fib();",2223    "for (var i = 0; i < 10; i++)",2224    "  print(g.next());"2225  ];2226  TestRun(test)2227    .addError(1, "'function*' is only available in ES6 (use esnext option).")2228    .addError(4, "'yield' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2229    .addError(5, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2230    .test(code, {unused: true, undef: true, predef: ["print"]}); // es52231  test.done();2232};2233exports["test: esnext generator as legacy JS"] = function (test) {2234  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72235  var code = [2236    "function* fib() {",2237    "  var i = 0, j = 1;",2238    "  while (true) {",2239    "    yield i;",2240    "    [i, j] = [j, i + j];",2241    "  }",2242    "}",2243    "var g = fib();",2244    "for (var i = 0; i < 10; i++)",2245    "  print(g.next());"2246  ];2247  TestRun(test)2248    .addError(1, "'function*' is only available in ES6 (use esnext option).")2249    .addError(4, "'yield' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2250    .addError(5, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2251    .test(code, {es3: true, unused: true, undef: true, predef: ["print"]});2252  test.done();2253};2254exports["test: esnext generator without yield"] = function (test) {2255  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72256  var code = [2257    "function* fib() {",2258    "  var i = 0, j = 1;",2259    "  while (true) {",2260    "    [i, j] = [j, i + j];",2261    "    return i;",2262    "  }",2263    "}",2264    "var g = fib();",2265    "for (let i = 0; i < 10; i++)",2266    "  print(g.next());"2267  ];2268  TestRun(test)2269    .addError(7, "A generator function shall contain a yield statement.")2270    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});2271  test.done();2272};2273exports["test: esnext generator without yield and check turned off"] = function (test) {2274  var code = [2275    "function* emptyGenerator() {}",2276    "emptyGenerator();"2277  ];2278  TestRun(test)2279    .test(code, {esnext: true, noyield: true, unused: true, undef: true, predef: ["print"]});2280  test.done();2281};2282exports["test: mozilla generator"] = function (test) {2283  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72284  var code = [2285    "function fib() {",2286    "  var i = 0, j = 1;",2287    "  while (true) {",2288    "    yield i;",2289    "    [i, j] = [j, i + j];",2290    "  }",2291    "}",2292    "var g = fib();",2293    "for (let i = 0; i < 10; i++)",2294    "  print(g.next());"2295  ];2296  TestRun(test)2297    .test(code, {moz: true, unused: true, undef: true, predef: ["print", "Iterator"]});2298  test.done();2299};2300exports["test: mozilla generator as esnext"] = function (test) {2301  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72302  var code = [2303    "function fib() {",2304    "  var i = 0, j = 1;",2305    "  while (true) {",2306    "    yield i;",2307    "    [i, j] = [j, i + j];",2308    "  }",2309    "}",2310    "var g = fib();",2311    "for (let i = 0; i < 10; i++)",2312    "  print(g.next());"2313  ];2314  TestRun(test)2315    .addError(4,2316     "A yield statement shall be within a generator function (with syntax: `function*`)")2317    .test(code, {esnext: true, unused: true, undef: true, predef: ["print", "Iterator"]});2318  test.done();2319};2320exports["test: yield statement within try-catch"] = function (test) {2321  // see issue: https://github.com/jshint/jshint/issues/15052322  var code = [2323    "function* fib() {",2324    "  try {",2325    "    yield 1;",2326    "  } catch (err) {",2327    "    yield err;",2328    "  }",2329    "}",2330    "var g = fib();",2331    "for (let i = 0; i < 10; i++)",2332    "  print(g.next());"2333  ];2334  TestRun(test)2335    .test(code, {esnext: true, unused: true, undef: true, predef: ["print", "Iterator"]});2336  test.done();2337};2338exports["test: mozilla generator as es5"] = function (test) {2339  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72340  var code = [2341    "function fib() {",2342    "  var i = 0, j = 1;",2343    "  while (true) {",2344    "    yield i;",2345    "    [i, j] = [j, i + j];",2346    "  }",2347    "}",2348    "var g = fib();",2349    "for (let i = 0; i < 10; i++)",2350    "  print(g.next());"2351  ];2352  TestRun(test)2353    .addError(4, "'yield' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2354    .addError(5, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2355    .addError(9, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2356    .test(code, {unused: true, undef: true, predef: ["print", "Iterator"]}); // es52357  test.done();2358};2359exports["test: mozilla generator as legacy JS"] = function (test) {2360  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72361  var code = [2362    "function fib() {",2363    "  var i = 0, j = 1;",2364    "  while (true) {",2365    "    yield i;",2366    "    [i, j] = [j, i + j];",2367    "  }",2368    "}",2369    "var g = fib();",2370    "for (let i = 0; i < 10; i++)",2371    "  print(g.next());"2372  ];2373  TestRun(test)2374    .addError(4, "'yield' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2375    .addError(5, "'destructuring assignment' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2376    .addError(9, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2377    .test(code, {es3: true, unused: true, undef: true, predef: ["print", "Iterator"]});2378  test.done();2379};2380exports["test: array comprehension"] = function (test) {2381  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72382  var code = [2383    "function *range(begin, end) {",2384    "  for (let i = begin; i < end; ++i) {",2385    "    yield i;",2386    "  }",2387    "}",2388    "var ten_squares = [for (i of range(0, 10)) i * i];",2389    "var evens = [for (i of range(0, 21)) if (i % 2 === 0) i];",2390    "print('squares:', ten_squares);",2391    "print('evens:', evens);"2392  ];2393  TestRun(test)2394    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});2395  test.done();2396};2397exports["test: moz-style array comprehension"] = function (test) {2398  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72399  var code = [2400    "function range(begin, end) {",2401    "  for (let i = begin; i < end; ++i) {",2402    "    yield i;",2403    "  }",2404    "}",2405    "var ten_squares = [i * i for each (i in range(0, 10))];",2406    "var evens = [i for each (i in range(0, 21)) if (i % 2 === 0)];",2407    "print('squares:', ten_squares);",2408    "print('evens:', evens);"2409  ];2410  TestRun(test)2411    .test(code, {moz: true, unused: true, undef: true, predef: ["print"]});2412  test.done();2413};2414exports["test: array comprehension with for..of"] = function (test) {2415  // example adapted from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72416  var code = [2417    "function *range(begin, end) {",2418    "  for (let i = begin; i < end; ++i) {",2419    "    yield i;",2420    "  }",2421    "}",2422    "var ten_squares = [for (i of range(0, 10)) i * i];",2423    "var evens = [for (i of range(0, 21)) if (i % 2 === 0) i];",2424    "print('squares:', ten_squares);",2425    "print('evens:', evens);"2426  ];2427  TestRun(test)2428    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});2429  test.done();2430};2431exports["test: moz-style array comprehension with for..of"] = function (test) {2432  // example adapted from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72433  var code = [2434    "function range(begin, end) {",2435    "  for (let i = begin; i < end; ++i) {",2436    "    yield i;",2437    "  }",2438    "}",2439    "var ten_squares = [i * i for (i of range(0, 10))];",2440    "var evens = [i for (i of range(0, 21)) if (i % 2 === 0)];",2441    "print('squares:', ten_squares);",2442    "print('evens:', evens);"2443  ];2444  TestRun(test)2445    .test(code, {moz: true, unused: true, undef: true, predef: ["print"]});2446  test.done();2447};2448exports["test: array comprehension with unused variables"] = function (test) {2449  var code = [2450    "var ret = [for (i of unknown) i];",2451    "print('ret:', ret);",2452  ];2453  TestRun(test)2454    .addError(1, "'unknown' is not defined.")2455    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});2456  test.done();2457};2458exports["test: moz-style array comprehension with unused variables"] = function (test) {2459  var code = [2460    "var ret = [i for (i of unknown)];",2461    "print('ret:', ret);",2462  ];2463  TestRun(test)2464    .addError(1, "'unknown' is not defined.")2465    .test(code, {moz: true, unused: true, undef: true, predef: ["print"]});2466  test.done();2467};2468exports["test: moz-style array comprehension as esnext"] = function (test) {2469  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72470  var code = [2471    "function range(begin, end) {",2472    "  for (let i = begin; i < end; ++i) {",2473    "    yield i;",2474    "  }",2475    "}",2476    "var ten_squares = [i * i for each (i in range(0, 10))];",2477    "var evens = [i for each (i in range(0, 21)) if (i % 2 === 0)];",2478    "print('squares:', ten_squares);",2479    "print('evens:', evens);"2480  ];2481  TestRun(test)2482    .addError(3, "A yield statement shall be within a generator function (with syntax: " +2483      "`function*`)")2484    .addError(6, "Expected 'for' and instead saw 'i'.")2485    .addError(6, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2486    .addError(7, "Expected 'for' and instead saw 'i'.")2487    .addError(7, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2488    .test(code, {esnext: true, unused: true, undef: true, predef: ["print"]});2489  test.done();2490};2491exports["test: array comprehension as es5"] = function (test) {2492  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72493  var code = [2494    "function *range(begin, end) {",2495    "  for (let i = begin; i < end; ++i) {",2496    "    yield i;",2497    "  }",2498    "}",2499    "var ten_squares = [for (i of range(0, 10)) i * i];",2500    "var evens = [for (i of range(0, 21)) if (i % 2 === 0) i];",2501    "print('squares:', ten_squares);",2502    "print('evens:', evens);"2503  ];2504  TestRun(test)2505    .addError(1, "'function*' is only available in ES6 (use esnext option).")2506    .addError(2, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2507    .addError(3, "'yield' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2508    .addError(6, "'array comprehension' is only available in ES6 " +2509      "(use esnext option).")2510    .addError(7, "'array comprehension' is only available in ES6 " +2511      "(use esnext option).")2512    .test(code, {unused: true, undef: true, predef: ["print"]}); // es52513  test.done();2514};2515exports["test: moz-style array comprehension as es5"] = function (test) {2516  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72517  var code = [2518    "function range(begin, end) {",2519    "  for (let i = begin; i < end; ++i) {",2520    "    yield i;",2521    "  }",2522    "}",2523    "var ten_squares = [i * i for each (i in range(0, 10))];",2524    "var evens = [i for each (i in range(0, 21)) if (i % 2 === 0)];",2525    "print('squares:', ten_squares);",2526    "print('evens:', evens);"2527  ];2528  TestRun(test)2529    .addError(2, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2530    .addError(3, "'yield' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2531    .addError(6, "'array comprehension' is only available in ES6 " +2532      "(use esnext option).")2533    .addError(6, "Expected 'for' and instead saw 'i'.")2534    .addError(6, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2535    .addError(7, "'array comprehension' is only available in ES6 " +2536      "(use esnext option).")2537    .addError(7, "Expected 'for' and instead saw 'i'.")2538    .addError(7, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2539    .test(code, {unused: true, undef: true, predef: ["print"]}); // es52540  test.done();2541};2542exports["test: array comprehension as legacy JS"] = function (test) {2543  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72544  var code = [2545    "function range(begin, end) {",2546    "  for (let i = begin; i < end; ++i) {",2547    "    yield i;",2548    "  }",2549    "}",2550    "var ten_squares = [for (i of range(0, 10)) i * i];",2551    "var evens = [for (i of range(0, 21)) if (i % 2 === 0) i];",2552    "print('squares:', ten_squares);",2553    "print('evens:', evens);"2554  ];2555  TestRun(test)2556    .addError(2, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2557    .addError(3, "'yield' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2558    .addError(6, "'array comprehension' is only available in ES6 " +2559      "(use esnext option).")2560    .addError(7, "'array comprehension' is only available in ES6 " +2561      "(use esnext option).")2562    .test(code, {es3: true, unused: true, undef: true, predef: ["print"]});2563  test.done();2564};2565exports["test: moz-style array comprehension as legacy JS"] = function (test) {2566  // example taken from https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.72567  var code = [2568    "function range(begin, end) {",2569    "  for (let i = begin; i < end; ++i) {",2570    "    yield i;",2571    "  }",2572    "}",2573    "var ten_squares = [i * i for each (i in range(0, 10))];",2574    "var evens = [i for each (i in range(0, 21)) if (i % 2 === 0)];",2575    "print('squares:', ten_squares);",2576    "print('evens:', evens);"2577  ];2578  TestRun(test)2579    .addError(2, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2580    .addError(3, "'yield' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2581    .addError(6, "'array comprehension' is only available in ES6 " +2582      "(use esnext option).")2583    .addError(6, "Expected 'for' and instead saw 'i'.")2584    .addError(6, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2585    .addError(7, "'array comprehension' is only available in ES6 " +2586      "(use esnext option).")2587    .addError(7, "Expected 'for' and instead saw 'i'.")2588    .addError(7, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2589    .test(code, {es3: true, unused: true, undef: true, predef: ["print"]});2590  test.done();2591};2592exports['test: array comprehension with dest array at global scope'] = function (test) {2593  var code = [2594    "[for ([i, j] of [[0,0], [1,1], [2,2]]) [i, j] ];",2595    "var destarray_comparray_1 = [for ([i, j] of [[0,0], [1,1], [2,2]]) [i, [j, j] ]];",2596    "var destarray_comparray_2 = [for ([i, j] of [[0,0], [1,1], [2,2]]) [i, {i: [i, j]} ]];",2597  ];2598  TestRun(test)2599    .test(code, {esnext: true, undef: true, predef: ["print"]});2600  test.done();2601};2602exports['test: moz-style array comprehension with dest array at global scope'] = function (test) {2603  var code = [2604    "[ [i, j] for each ([i, j] in [[0,0], [1,1], [2,2]])];",2605    "var destarray_comparray_1 = [ [i, [j, j] ] for each ([i, j] in [[0,0], [1,1], [2,2]])];",2606    "var destarray_comparray_2 = [ [i, {i: [i, j]} ] for each ([i, j] in [[0,0], [1,1], [2,2]])];",2607  ];2608  TestRun(test)2609    .test(code, {moz: true, undef: true, predef: ["print"]});2610  test.done();2611};2612exports['test: moz-style array comprehension with dest array at global scope as esnext'] = function (test) {2613  var code = [2614    "[ [i, j] for each ([i, j] in [[0,0], [1,1], [2,2]])];",2615    "var destarray_comparray_1 = [ [i, [j, j] ] for each ([i, j] in [[0,0], [1,1], [2,2]])];",2616    "var destarray_comparray_2 = [ [i, {i: [i, j]} ] for each ([i, j] in [[0,0], [1,1], [2,2]])];",2617  ];2618  TestRun(test)2619    .addError(1, "Expected 'for' and instead saw '['.")2620    .addError(1, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2621    .addError(2, "Expected 'for' and instead saw '['.")2622    .addError(2, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2623    .addError(3, "Expected 'for' and instead saw '['.")2624    .addError(3, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2625    .test(code, {esnext: true, undef: true, predef: ["print"]});2626  test.done();2627};2628exports['test: array comprehension with dest array at global scope as es5'] = function (test) {2629  var code = [2630    "[for ([i, j] of [[0,0], [1,1], [2,2]]) [i, j] ];",2631    "var destarray_comparray_1 = [for ([i, j] of [[0,0], [1,1], [2,2]]) [i, [j, j] ] ];",2632    "var destarray_comparray_2 = [for ([i, j] of [[0,0], [1,1], [2,2]]) [i, {i: [i, j]} ] ];",2633  ];2634  TestRun(test)2635    .addError(1, "'array comprehension' is only available in ES6 " +2636      "(use esnext option).")2637    .addError(2, "'array comprehension' is only available in ES6 " +2638      "(use esnext option).")2639    .addError(3, "'array comprehension' is only available in ES6 " +2640      "(use esnext option).")2641    .test(code, {undef: true, predef: ["print"]}); // es52642  test.done();2643};2644exports['test: moz-style array comprehension with dest array at global scope as es5'] = function (test) {2645  var code = [2646    "[ [i, j] for each ([i, j] in [[0,0], [1,1], [2,2]])];",2647    "var destarray_comparray_1 = [ [i, [j, j] ] for each ([i, j] in [[0,0], [1,1], [2,2]])];",2648    "var destarray_comparray_2 = [ [i, {i: [i, j]} ] for each ([i, j] in [[0,0], [1,1], [2,2]])];",2649  ];2650  TestRun(test)2651    .addError(1, "'array comprehension' is only available in ES6 " +2652      "(use esnext option).")2653    .addError(1, "Expected 'for' and instead saw '['.")2654    .addError(1, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2655    .addError(2, "'array comprehension' is only available in ES6 " +2656      "(use esnext option).")2657    .addError(2, "Expected 'for' and instead saw '['.")2658    .addError(2, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2659    .addError(3, "'array comprehension' is only available in ES6 " +2660      "(use esnext option).")2661    .addError(3, "Expected 'for' and instead saw '['.")2662    .addError(3, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2663    .test(code, {undef: true, predef: ["print"]}); // es52664  test.done();2665};2666exports['test: array comprehension with dest array at global scope as JS legacy'] = function (test) {2667  var code = [2668    "[for ([i, j] of [[0,0], [1,1], [2,2]]) [i, j] ];",2669    "var destarray_comparray_1 = [for ([i, j] of [[0,0], [1,1], [2,2]]) [i, [j, j] ] ];",2670    "var destarray_comparray_2 = [for ([i, j] of [[0,0], [1,1], [2,2]]) [i, {i: [i, j]} ] ];",2671  ];2672  TestRun(test)2673    .addError(1, "'array comprehension' is only available in ES6 " +2674      "(use esnext option).")2675    .addError(2, "'array comprehension' is only available in ES6 " +2676      "(use esnext option).")2677    .addError(3, "'array comprehension' is only available in ES6 " +2678      "(use esnext option).")2679    .test(code, {es3: true, undef: true, predef: ["print"]});2680  test.done();2681};2682exports['test: moz-style array comprehension with dest array at global scope as JS legacy'] = function (test) {2683  var code = [2684    "[ [i, j] for each ([i, j] in [[0,0], [1,1], [2,2]])];",2685    "var destarray_comparray_1 = [ [i, [j, j] ] for each ([i, j] in [[0,0], [1,1], [2,2]])];",2686    "var destarray_comparray_2 = [ [i, {i: [i, j]} ] for each ([i, j] in [[0,0], [1,1], [2,2]])];",2687  ];2688  TestRun(test)2689    .addError(1, "'array comprehension' is only available in ES6 " +2690      "(use esnext option).")2691    .addError(1, "Expected 'for' and instead saw '['.")2692    .addError(1, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2693    .addError(2, "'array comprehension' is only available in ES6 " +2694      "(use esnext option).")2695    .addError(2, "Expected 'for' and instead saw '['.")2696    .addError(2, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2697    .addError(3, "'array comprehension' is only available in ES6 " +2698      "(use esnext option).")2699    .addError(3, "Expected 'for' and instead saw '['.")2700    .addError(3, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2701    .test(code, {es3: true, undef: true, predef: ["print"]});2702  test.done();2703};2704exports["test: array comprehension imbrication with dest array"] = function (test) {2705  var code = [2706    "[for ([i, j] of [for ([a, b] of [[2,2], [3,4]]) [a, b] ]) [i, j] ];"2707  ];2708  TestRun(test)2709    .test(code, {esnext: true, undef: true, predef: ["print"]});2710  test.done();2711};2712exports["test: moz-style array comprehension imbrication with dest array"] = function (test) {2713  var code = [2714    "[ [i, j] for ([i, j] in [[a, b] for each ([a, b] in [[2,2], [3,4]])]) ];"2715  ];2716  TestRun(test)2717    .test(code, {moz: true, undef: true, predef: ["print"]});2718  test.done();2719};2720exports["test: moz-style array comprehension imbrication with dest array using for..of"] = function (test) {2721  var code = [2722    "[ [i, j] for ([i, j] of [[a, b] for ([a, b] of [[2,2], [3,4]])]) ];"2723  ];2724  TestRun(test)2725    .test(code, {moz: true, undef: true, predef: ["print"]});2726  test.done();2727};2728exports["test: moz-style array comprehension imbrication with dest array as esnext"] = function (test) {2729  var code = [2730    "[ [i, j] for each ([i, j] in [[a, b] for each ([a, b] in [[2,2], [3,4]])]) ];"2731  ];2732  TestRun(test)2733    .addError(1, "Expected 'for' and instead saw '['.")2734    .addError(1, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2735    .test(code, {esnext: true, undef: true, predef: ["print"]});2736  test.done();2737};2738exports["test: array comprehension imbrication with dest array as es5"] = function (test) {2739  var code = [2740    "[for ([i, j] of [for ([a, b] of [[2,2], [3,4]]) [a, b] ]) [i, j] ];"2741  ];2742  TestRun(test)2743    .addError(1, "'array comprehension' is only available in ES6 " +2744      "(use esnext option).")2745    .addError(1, "'array comprehension' is only available in ES6 " +2746      "(use esnext option).")2747    .test(code, {undef: true, predef: ["print"]}); // es52748  test.done();2749};2750exports["test: moz-style array comprehension imbrication with dest array as es5"] = function (test) {2751  var code = [2752    "[for ([i, j] of [for ([a, b] of [[2,2], [3,4]]) [a, b] ]) [i, j] ];"2753  ];2754  TestRun(test)2755    .addError(1, "'array comprehension' is only available in ES6 " +2756      "(use esnext option).")2757    .addError(1, "'array comprehension' is only available in ES6 " +2758      "(use esnext option).")2759    .test(code, {undef: true, predef: ["print"]}); // es52760  test.done();2761};2762exports["test: array comprehension imbrication with dest array as legacy JS"] = function (test) {2763  var code = [2764    "[ [i, j] for each ([i, j] in [[a, b] for each ([a, b] in [[2,2], [3,4]])]) ];"2765  ];2766  TestRun(test)2767    .addError(1, "'array comprehension' is only available in ES6 " +2768      "(use esnext option).")2769    .addError(1, "'array comprehension' is only available in ES6 " +2770      "(use esnext option).")2771    .addError(1, "Expected 'for' and instead saw '['.")2772    .addError(1, "Expected 'for' and instead saw '['.")2773    .addError(1, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2774    .test(code, {es3: true, undef: true, predef: ["print"]});2775  test.done();2776};2777exports["test: moz-style array comprehension imbrication with dest array as legacy JS"] = function (test) {2778  var code = [2779    "[ [i, j] for each ([i, j] in [[a, b] for each ([a, b] in [[2,2], [3,4]])]) ];"2780  ];2781  TestRun(test)2782    .addError(1, "'array comprehension' is only available in ES6 " +2783      "(use esnext option).")2784    .addError(1, "'array comprehension' is only available in ES6 " +2785      "(use esnext option).")2786    .addError(1, "Expected 'for' and instead saw '['.")2787    .addError(1, "Expected 'for' and instead saw '['.")2788    .addError(1, "'for each' is only available in Mozilla JavaScript extensions (use moz option).")2789    .test(code, {es3: true, undef: true, predef: ["print"]});2790  test.done();2791};2792exports["test: no false positive array comprehension"] = function (test) {2793  var code = [2794    "var foo = []; for (let i in [1,2,3]) { print(i); }"2795  ];2796  TestRun(test)2797    .test(code, {moz: true, undef: true, predef: ["print"]});2798  test.done();2799};2800exports["try catch filters"] = function (test) {2801  var code = [2802    "try {",2803    "  throw {name: 'foo', message: 'bar'};",2804    "}",2805    "catch (e if e.name === 'foo') {",2806    "  print (e.message);",2807    "}"2808  ];2809  TestRun(test)2810    .test(code, {moz: true, undef: true, predef: ["print"]});2811  test.done();2812};2813exports["try catch filters as esnext"] = function (test) {2814  var code = [2815    "try {",2816    "  throw {name: 'foo', message: 'bar'};",2817    "}",2818    "catch (e if e.name === 'foo') {",2819    "  print (e.message);",2820    "}"2821  ];2822  TestRun(test)2823    .addError(4, "'catch filter' is only available in Mozilla JavaScript extensions " +2824      "(use moz option).")2825    .test(code, {esnext: true, undef: true, predef: ["print"]});2826  test.done();2827};2828exports["try catch filters as es5"] = function (test) {2829  var code = [2830    "try {",2831    "  throw {name: 'foo', message: 'bar'};",2832    "}",2833    "catch (e if e.name === 'foo') {",2834    "  print (e.message);",2835    "}"2836  ];2837  TestRun(test)2838    .addError(4, "'catch filter' is only available in Mozilla JavaScript extensions " +2839      "(use moz option).")2840    .test(code, {undef: true, predef: ["print"]}); // es52841  test.done();2842};2843exports["try catch filters as legacy JS"] = function (test) {2844  var code = [2845    "try {",2846    "  throw {name: 'foo', message: 'bar'};",2847    "}",2848    "catch (e if e.name === 'foo') {",2849    "  print (e.message);",2850    "}"2851  ];2852  TestRun(test)2853    .addError(4, "'catch filter' is only available in Mozilla JavaScript extensions " +2854      "(use moz option).")2855    .test(code, {es3: true, undef: true, predef: ["print"]});2856  test.done();2857};2858exports["test: function closure expression"] = function (test) {2859  var code = [2860    "let (arr = [1,2,3]) {",2861    "  arr.every(function (o) o instanceof Object);",2862    "}"2863  ];2864  TestRun(test)2865    .test(code, {es3: true, moz: true, undef: true});2866  test.done();2867};2868exports["test: function closure expression as esnext"] = function (test) {2869  var code = [2870    "var arr = [1,2,3];",2871    "arr.every(function (o) o instanceof Object);",2872  ];2873  TestRun(test)2874    .addError(2, "'function closure expressions' is only available in Mozilla JavaScript " +2875      "extensions (use moz option).")2876    .test(code, {esnext: true, undef: true});2877  test.done();2878};2879exports["test: function closure expression as es5"] = function (test) {2880  var code = [2881    "var arr = [1,2,3];",2882    "arr.every(function (o) o instanceof Object);",2883  ];2884  TestRun(test)2885    .addError(2, "'function closure expressions' is only available in Mozilla JavaScript " +2886      "extensions (use moz option).")2887    .test(code, {undef: true}); // es52888  test.done();2889};2890exports["test: function closure expression as legacy JS"] = function (test) {2891  var code = [2892    "var arr = [1,2,3];",2893    "arr.every(function (o) o instanceof Object);",2894  ];2895  TestRun(test)2896    .addError(2, "'function closure expressions' is only available in Mozilla JavaScript " +2897      "extensions (use moz option).")2898    .test(code, {es3: true, undef: true});2899  test.done();2900};2901exports["test: for of as esnext"] = function (test) {2902  var code = [2903    "for (let x of [1,2,3,4]) {",2904    "    print(x);",2905    "}",2906    "for (let x of [1,2,3,4]) print(x);"2907  ];2908  TestRun(test)2909    .test(code, {esnext: true, undef: true, predef: ["print"]});2910  test.done();2911};2912exports["test: for of as es5"] = function (test) {2913  var code = [2914    "for (let x of [1,2,3,4]) {",2915    "    print(x);",2916    "}",2917    "for (let x of [1,2,3,4]) print(x);"2918  ];2919  TestRun(test)2920    .addError(1, "'for of' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2921    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2922    .addError(4, "'for of' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2923    .addError(4, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2924    .test(code, {undef: true, predef: ["print"]}); // es52925  test.done();2926};2927exports["test: for of as legacy JS"] = function (test) {2928  var code = [2929    "for (let x of [1,2,3,4]) {",2930    "    print(x);",2931    "}",2932    "for (let x of [1,2,3,4]) print(x);"2933  ];2934  TestRun(test)2935    .addError(1, "'for of' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2936    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2937    .addError(4, "'for of' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2938    .addError(4, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")2939    .test(code, {undef: true, predef: ["print"]}); // es52940  test.done();2941};2942exports["test: try multi-catch for moz extensions"] = function (test) {2943  var code = [2944    "try {",2945    "    print('X');",2946    "} catch (err) {",2947    "    print(err);",2948    "} catch (err) {",2949    "    print(err);",2950    "} finally {",2951    "    print('Z');",2952    "}"2953  ];2954  TestRun(test)2955    .test(code, {moz: true, undef: true, predef: ["print"]});2956  test.done();2957};2958exports["test: try multi-catch as esnext"] = function (test) {2959  var code = [2960    "try {",2961    "    print('X');",2962    "} catch (err) {",2963    "    print(err);",2964    "} catch (err) {",2965    "    print(err);",2966    "} finally {",2967    "    print('Z');",2968    "}"2969  ];2970  TestRun(test)2971    .addError(5, "'multiple catch blocks' is only available in Mozilla JavaScript extensions " +2972      "(use moz option).")2973    .test(code, {esnext: true, undef: true, predef: ["print"]});2974  test.done();2975};2976exports["test: try multi-catch as es5"] = function (test) {2977  var code = [2978    "try {",2979    "    print('X');",2980    "} catch (err) {",2981    "    print(err);",2982    "} catch (err) {",2983    "    print(err);",2984    "} finally {",2985    "    print('Z');",2986    "}"2987  ];2988  TestRun(test)2989    .addError(5, "'multiple catch blocks' is only available in Mozilla JavaScript extensions " +2990      "(use moz option).")2991    .test(code, {undef: true, predef: ["print"]}); // es52992  test.done();2993};2994exports["test: try multi-catch as legacy JS"] = function (test) {2995  var code = [2996    "try {",2997    "    print('X');",2998    "} catch (err) {",2999    "    print(err);",3000    "} catch (err) {",3001    "    print(err);",3002    "} finally {",3003    "    print('Z');",3004    "}"3005  ];3006  TestRun(test)3007    .addError(5, "'multiple catch blocks' is only available in Mozilla JavaScript extensions " +3008      "(use moz option).")3009    .test(code, {es3: true, undef: true, predef: ["print"]});3010  test.done();3011};3012exports["test: no let not directly within a block"] = function (test) {3013  var code = [3014    "if (true) let x = 1;",3015    "function foo() {",3016    "   if (true)",3017    "       let x = 1;",3018    "}",3019    "if (true) let (x = 1) print(x);",3020    "for (let x = 0; x < 42; ++x) let a = 1;",3021    "for (let x in [1, 2, 3, 4] ) let a = 1;",3022    "for (let x of [1, 2, 3, 4] ) let a = 1;",3023    "while (true) let a = 1;",3024    "if (false) let a = 1; else if (true) let a = 1; else let a = 2;"3025  ];3026  TestRun(test)3027    .addError(1, "Let declaration not directly within block.")3028    .addError(4, "Let declaration not directly within block.")3029    .addError(7, "Let declaration not directly within block.")3030    .addError(8, "Let declaration not directly within block.")3031    .addError(9, "Let declaration not directly within block.")3032    .addError(10, "Let declaration not directly within block.")3033    .addError(11, "Let declaration not directly within block.")3034    .addError(11, "Let declaration not directly within block.")3035    .addError(11, "Let declaration not directly within block.")3036    .test(code, {moz: true, predef: ["print"]});3037  test.done();3038};3039exports["regression test for crash from GH-964"] = function (test) {3040  var code = [3041    "function test(a, b) {",3042    "  return a[b] || a[b] = new A();",3043    "}"3044  ];3045  TestRun(test)3046    .addError(2, "Bad assignment.")3047    .addError(2, "Expected an operator and instead saw 'new'.")3048    .addError(2, "Missing semicolon.")3049    .test(code);3050  test.done();3051};3052exports["automatic comma insertion GH-950"] = function (test) {3053  var code = [3054    "var a = b",3055    "instanceof c;",3056    "var a = { b: 'X' }",3057    "delete a.b",3058    "var y = true",3059    "           && true && false;",3060    "function test() {",3061    "  return",3062    "      { a: 1 }",3063    "}",3064  ];3065  var run = TestRun(test)3066    .addError(2, "Bad line breaking before 'instanceof'.")3067    .addError(6, "Bad line breaking before '&&'.")3068    .addError(8, "Line breaking error 'return'.")3069    .addError(9, "Label 'a' on 1 statement.")3070    .addError(9, "Expected an assignment or function call and instead saw an expression.");3071  run.test(code, {es3: true, asi: true});3072  run.test(code, {asi: true}); // es53073  run.test(code, {esnext: true, asi: true});3074  run.test(code, {moz: true, asi: true});3075  run = TestRun(test)3076    .addError(2, "Bad line breaking before 'instanceof'.")3077    .addError(3, "Missing semicolon.")3078    .addError(4, "Missing semicolon.")3079    .addError(6, "Bad line breaking before '&&'.")3080    .addError(8, "Line breaking error 'return'.")3081    .addError(8, "Missing semicolon.")3082    .addError(9, "Label 'a' on 1 statement.")3083    .addError(9, "Expected an assignment or function call and instead saw an expression.")3084    .addError(9, "Missing semicolon.");3085  run.test(code, {es3: true, asi: false});3086  run.test(code, {asi: false}); // es53087  run.test(code, {esnext: true, asi: false});3088  run.test(code, {moz: true, asi: false});3089  test.done();3090};3091exports["fat arrows support"] = function (test) {3092  var code = [3093    "let empty = () => {};",3094    "let identity = x => x;",3095    "let square = x => x * x;",3096    "let key_maker = val => ({key: val});",3097    "let odds = evens.map(v => v + 1);",3098    "let fives = []; nats.forEach(v => { if (v % 5 === 0) fives.push(v); });",3099    "let block = (x,y, { z: t }) => {",3100    "  print(x,y,z);",3101    "  print(j, t);",3102    "};",3103    // using lexical this3104    "const obj = {",3105    "  method: function () {",3106    "    return () => this;",3107    "  }",3108    "};",3109    "let retnObj = () => ({});",3110    "let assgnRetnObj = (() => ({}))();",3111    "let retnObjLong = () => { return {}; };",3112    "let assgnRetnObjLong = (() => { return {}; })();",3113    "let objFns = {",3114    "  retnObj: () => ({}),",3115    "  assgnRetnObj: (() => ({}))(),",3116    "  retnObjLong: () => { return {}; },",3117    "  assgnRetnObjLong: (() => { return {}; })()",3118    "};"3119  ];3120  var run = TestRun(test)3121    .addError(5, "'evens' is not defined.")3122    .addError(6, "'nats' is not defined.")3123    .addError(8, "'print' is not defined.")3124    .addError(9, "'print' is not defined.")3125    .addError(9, "'j' is not defined.")3126    .addError(8, "'z' is not defined.");3127  run.test(code, { undef: true, esnext: true });3128  run = TestRun(test)3129    .addError(1, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3130    .addError(2, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3131    .addError(3, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3132    .addError(4, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3133    .addError(5, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3134    .addError(5, "'evens' is not defined.")3135    .addError(6, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3136    .addError(6, "'nats' is not defined.")3137    .addError(7, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3138    .addError(8, "'print' is not defined.")3139    .addError(8, "'z' is not defined.")3140    .addError(9, "'print' is not defined.")3141    .addError(9, "'j' is not defined.")3142    .addError(13, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3143    .addError(16, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3144    .addError(17, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3145    .addError(17, "Bad invocation.")3146    .addError(18, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3147    .addError(19, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3148    .addError(19, "Bad invocation.")3149    .addError(21, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3150    .addError(22, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3151    .addError(22, "Bad invocation.")3152    .addError(23, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3153    .addError(24, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3154    .addError(24, "Bad invocation.");3155  run.test(code, { undef: true, moz: true });3156  run = TestRun(test)3157    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3158    .addError(1, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3159    .addError(2, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3160    .addError(2, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3161    .addError(3, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3162    .addError(3, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3163    .addError(4, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3164    .addError(4, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3165    .addError(5, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3166    .addError(5, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3167    .addError(6, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3168    .addError(6, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3169    .addError(7, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3170    .addError(7, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3171    .addError(7, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3172    .addError(11, "'const' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3173    .addError(13, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3174    .addError(16, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3175    .addError(16, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3176    .addError(17, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3177    .addError(17, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3178    .addError(17, "Bad invocation.")3179    .addError(18, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3180    .addError(18, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3181    .addError(19, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3182    .addError(19, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3183    .addError(19, "Bad invocation.")3184    .addError(20, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3185    .addError(21, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3186    .addError(22, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3187    .addError(22, "Bad invocation.")3188    .addError(23, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3189    .addError(24, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3190    .addError(24, "Bad invocation.");3191  run.test(code); // es53192  run.test(code, {es3: true});3193  test.done();3194};3195exports["concise methods support"] = function (test) {3196  var code = [3197    "var foobar = {",3198    "  foo () {",3199    "    return 'foo';",3200    "  },",3201    "  *bar () {",3202    "    yield 'bar';",3203    "  }",3204    "};"3205  ];3206  var run = TestRun(test);3207  run.test(code, {esnext: true});3208  run.test(code, {moz: true});3209  run = TestRun(test)3210    .addError(2, "'concise methods' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3211    .addError(5, "'generator functions' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3212    .addError(5, "'concise methods' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3213    .addError(6, "'yield' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).");3214  run.test(code); // es53215  run.test(code, {es3: true});3216  test.done();3217};3218exports["concise methods support for 'get' and 'set' function names"] = function (test) {3219  var code = [3220    "var a = [1, 2, 3, 4, 5];",3221    "var strange = {",3222    "  get (i) {",3223    "    return a[i];",3224    "  },",3225    "  set () {",3226    "    a.forEach(function(v, i, l) { l[i] = v++; });",3227    "  }",3228    "};"3229  ];3230  TestRun(test).test(code, {esnext: true});3231  test.done();3232};3233exports["concise methods support for 'get' without 'set'"] = function (test) {3234  var code = [3235    "var a = [1, 2, 3, 4, 5];",3236    "var strange = {",3237    "  get () {",3238    "    return a;",3239    "  }",3240    "};"3241  ];3242  TestRun(test).test(code, {esnext: true});3243  test.done();3244};3245exports["concise methods support for 'set' without 'get'"] = function (test) {3246  var code = [3247    "var a = [1, 2, 3, 4, 5];",3248    "var strange = {",3249    "  set (v) {",3250    "    a = v;",3251    "  }",3252    "};"3253  ];3254  TestRun(test).test(code, {esnext: true});3255  test.done();3256};3257exports["object short notation: basic"] = function (test) {3258  var code = [3259    "var foo = 42;",3260    "var bar = {foo};",3261    "var baz = {foo, bar};"3262  ];3263  TestRun(test).test(code, {esnext: true});3264  TestRun(test)3265    .addError(2, "'object short notation' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3266    .addError(3, "'object short notation' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3267    .test(code);3268  test.done();3269};3270exports["object short notation: mixed"] = function (test) {3271  var code = [3272    "var b = 1, c = 2;",3273    "var o1 = {a: 1, b, c};",3274    "var o2 = {b, a: 1, c};"3275  ].join("\n");3276  TestRun(test).test(code, { esnext: true });3277  TestRun(test)3278    .addError(2, "'object short notation' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3279    .addError(2, "'object short notation' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3280    .addError(3, "'object short notation' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3281    .addError(3, "'object short notation' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3282  .test(code);3283  test.done();3284};3285exports["spread & rest operator support"] = function (test) {3286  var code = [3287    // spread operator3288    "function foo(a, b, c) {",3289    "  console.log(a, b, c); ",3290    "}",3291    "var args = [ 0, 1, 2 ];",3292    "foo(...args);",3293    // spread operator3294    "let initial = [ 1, 2, 3, 4, 5 ];",3295    "let extended = [ ...initial, 6, 7, 8, 9 ];",3296    // rest operator3297    "(function foo(i, j, ...args) {",3298    "  return args;",3299    "}());",3300    // rest operator on a fat arrow function3301    "let bar = (...args) => args;"3302  ];3303  var run = TestRun(test);3304  run.test(code, {esnext: true});3305  run = TestRun(test)3306    .addError(11, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3307    .addError(5, "'spread/rest operator' is only available in ES6 (use esnext option).")3308    .addError(7, "'spread/rest operator' is only available in ES6 (use esnext option).")3309    .addError(8, "'spread/rest operator' is only available in ES6 (use esnext option).")3310    .addError(11, "'spread/rest operator' is only available in ES6 (use esnext option).");3311  run.test(code, {moz: true});3312  run = TestRun(test)3313    .addError(5, "'spread/rest operator' is only available in ES6 (use esnext option).")3314    .addError(6, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3315    .addError(7, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3316    .addError(7, "'spread/rest operator' is only available in ES6 (use esnext option).")3317    .addError(8, "'spread/rest operator' is only available in ES6 (use esnext option).")3318    .addError(11, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3319    .addError(11, "'spread/rest operator' is only available in ES6 (use esnext option).")3320    .addError(11, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).");3321  run.test(code);3322  test.done();3323};3324exports["parameter destructuring with rest"] = function (test) {3325  var code = [3326    // 13327    // parameter destructuring with rest operator, solo3328    "let b = ([...args]) => args;",3329    // 23330    // ...in function expression3331    "let c = function([...args]) { return args; };",3332    // 33333    // ...in function declaration3334    "function d([...args]) { return args; }",3335    // 43336    // default destructuring with rest operator, with leading param3337    "let e = ([first, ...args]) => args;",3338    // 53339    // ...in function expression3340    "let f = function([first, ...args]) { return args; };",3341    // 63342    // ...in function declaration3343    "function g([first, ...args]) { return args; }",3344    // 73345    // Just rest3346    "let h = (...args) => args;",3347    // 83348    // ...in function expression3349    "let i = function(...args) { return args; };",3350    // 93351    // ...in function declaration3352    "function j(...args) { return args; }"3353  ];3354  var run = TestRun(test);3355  run.test(code, {esnext: true});3356  run = TestRun(test)3357    .addError(1, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3358    .addError(1, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3359    .addError(4, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3360    .addError(7, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3361    .addError(7, "'spread/rest operator' is only available in ES6 (use esnext option).")3362    .addError(1, "'spread/rest operator' is only available in ES6 (use esnext option).")3363    .addError(1, "'spread/rest operator' is only available in ES6 (use esnext option).")3364    .addError(2, "'spread/rest operator' is only available in ES6 (use esnext option).")3365    .addError(2, "'spread/rest operator' is only available in ES6 (use esnext option).")3366    .addError(3, "'spread/rest operator' is only available in ES6 (use esnext option).")3367    .addError(3, "'spread/rest operator' is only available in ES6 (use esnext option).")3368    .addError(4, "'spread/rest operator' is only available in ES6 (use esnext option).")3369    .addError(4, "'spread/rest operator' is only available in ES6 (use esnext option).")3370    .addError(5, "'spread/rest operator' is only available in ES6 (use esnext option).")3371    .addError(5, "'spread/rest operator' is only available in ES6 (use esnext option).")3372    .addError(6, "'spread/rest operator' is only available in ES6 (use esnext option).")3373    .addError(6, "'spread/rest operator' is only available in ES6 (use esnext option).")3374    .addError(8, "'spread/rest operator' is only available in ES6 (use esnext option).")3375    .addError(9, "'spread/rest operator' is only available in ES6 (use esnext option).");3376  run.test(code, {moz: true});3377  run = TestRun(test)3378    .addError(1, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3379    .addError(1, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3380    .addError(1, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3381    .addError(1, "'spread/rest operator' is only available in ES6 (use esnext option).")3382    .addError(2, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3383    .addError(2, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3384    .addError(2, "'spread/rest operator' is only available in ES6 (use esnext option).")3385    .addError(3, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3386    .addError(3, "'spread/rest operator' is only available in ES6 (use esnext option).")3387    .addError(4, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3388    .addError(4, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3389    .addError(4, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3390    .addError(4, "'spread/rest operator' is only available in ES6 (use esnext option).")3391    .addError(5, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3392    .addError(5, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3393    .addError(5, "'spread/rest operator' is only available in ES6 (use esnext option).")3394    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3395    .addError(6, "'spread/rest operator' is only available in ES6 (use esnext option).")3396    .addError(7, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3397    .addError(7, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3398    .addError(7, "'spread/rest operator' is only available in ES6 (use esnext option).")3399    .addError(8, "'let' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3400    .addError(8, "'spread/rest operator' is only available in ES6 (use esnext option).")3401    .addError(9, "'spread/rest operator' is only available in ES6 (use esnext option).");3402  run.test(code);3403  test.done();3404};3405exports["test for GH-1010"] = function (test) {3406  var code = [3407    "var x = 20, y, z; if(x < 30) y=7, z=2; else y=5;"3408  ];3409  var run = TestRun(test);3410  run.test(code, {expr: true, es3: true});3411  run.test(code, {expr: true}); // es53412  run.test(code, {expr: true, esnext: true});3413  run.test(code, {expr: true, moz: true});3414  test.done();3415};3416exports.classes = function (test) {3417  var cdecl = "// cdecl";3418  var cexpr = "// cexpr";3419  var cdeclAssn = "// cdeclAssn";3420  var cexprAssn = "// cexprAssn";3421  var code = [3422    "var Bar;",3423    // class declarations3424    cdecl,3425    "class Foo0 {}",3426    "class Foo1 extends Bar {}",3427    "class protected {",3428    "  constructor(package) {}",3429    "}",3430    "class Foo3 extends interface {",3431    "  constructor() {}",3432    "}",3433    "class Foo4 extends Bar {",3434    "  constructor() {",3435    "    super();",3436    "  }",3437    "}",3438    "class Foo5 {",3439    "  constructor() {",3440    "  }",3441    "  static create() {",3442    "  }",3443    "}",3444    "class Foo6 extends Bar {",3445    "  constructor() {",3446    "    super();",3447    "  }",3448    "  static create() {",3449    "  }",3450    "}",3451    // class expressions3452    cexpr,3453    "var Foo7 = class {};",3454    "let Foo8 = class extends Bar {};",3455    "var static = class protected {",3456    "  constructor(package) {}",3457    "};",3458    "var Foo10 = class extends interface {",3459    "  constructor() {}",3460    "};",3461    "var Foo11 = class extends Bar {",3462    "  constructor() {",3463    "    super();",3464    "  }",3465    "};",3466    "var Foo12 = class {",3467    "  constructor() {",3468    "  }",3469    "  static create() {",3470    "  }",3471    "};",3472    "let Foo13 = class extends Bar {",3473    "  constructor() {",3474    "    super();",3475    "  }",3476    "  static create() {",3477    "  }",3478    "};",3479    // mark these as used3480    "void (Foo1, Foo3, Foo4, Foo5, Foo6);",3481    "void (Foo8, Foo10, Foo11, Foo12, Foo13);",3482    // class declarations: extends AssignmentExpression3483    cdeclAssn,3484    "class Foo14 extends Bar[42] {}",3485    "class Foo15 extends { a: function() { return 42; } } {}",3486    "class Foo16 extends class Foo15 extends Bar {} {}",3487    "class Foo17 extends Foo15 = class Foo16 extends Bar {} {}",3488    "class Foo18 extends function () {} {}",3489    "class Foo19 extends class extends function () {} {} {}",3490    "class Foo20 extends Foo18 = class extends Foo17 = function () {} {} {}",3491    // class expressions: extends AssignmentExpression3492    cexprAssn,3493    "let Foo21 = class extends Bar[42] {};",3494    "let Foo22 = class extends { a() { return 42; } } {};",3495    "let Foo23 = class extends class Foo15 extends Bar {} {};",3496    "let Foo24 = class extends Foo15 = class Foo16 extends Bar {} {};",3497    "let Foo25 = class extends function () {} {};",3498    "let Foo26 = class extends class extends function () {} {} {};",3499    "let Foo27 = class extends Foo18 = class extends Foo17 = function () {} {} {};",3500    // mark these as used3501    "void (Foo14, Foo15, Foo16, Foo17, Foo18, Foo19, Foo20);",3502    "void (Foo21, Foo22, Foo23, Foo24, Foo25, Foo26, Foo27);"3503  ];3504  cdecl = code.indexOf(cdecl) + 1;3505  cexpr = code.indexOf(cexpr) + 1;3506  cdeclAssn = code.indexOf(cdeclAssn) + 1;3507  cexprAssn = code.indexOf(cexprAssn) + 1;3508  var run = TestRun(test)3509    .addError(cdecl + 4, "Expected an identifier and instead saw 'package' (a reserved word).")3510    .addError(cexpr + 4, "Expected an identifier and instead saw 'package' (a reserved word).");3511  run.test(code, {esnext: true});3512  run.test(code, {moz: true});3513  run3514    .addError(cdecl + 1, "'Foo0' is defined but never used.")3515    .addError(cdecl + 3, "Expected an identifier and instead saw 'protected' (a reserved word).")3516    .addError(cdecl + 3, "'protected' is defined but never used.")3517    .addError(cdecl + 4, "'package' is defined but never used.");3518  run3519    .addError(cexpr + 1, "'Foo7' is defined but never used.")3520    .addError(cexpr + 3, "Expected an identifier and instead saw 'static' (a reserved word).")3521    .addError(cexpr + 3, "'static' is defined but never used.")3522    .addError(cexpr + 3, "Expected an identifier and instead saw 'protected' (a reserved word).")3523    .addError(cexpr + 4, "'package' is defined but never used.");3524  code[0] = "'use strict';" + code[0];3525  run.test(code, {unused: true, globalstrict: true, esnext: true});3526  run.test(code, {unused: true, globalstrict: true, moz: true});3527  test.done();3528};3529exports["class and method naming"] = function (test) {3530  var code = [3531    "class eval {}",3532    "class arguments {}",3533    "class C {",3534    "  get constructor() {}",3535    "  set constructor(x) {}",3536    "  prototype() {}",3537    "}"3538  ];3539  var run = TestRun(test)3540    .addError(1, "Expected an identifier and instead saw 'eval' (a reserved word).")3541    .addError(2, "Expected an identifier and instead saw 'arguments' (a reserved word).")3542    .addError(4, "A class getter method cannot be named 'constructor'.")3543    .addError(5, "A class setter method cannot be named 'constructor'.")3544    .addError(7, "A class method cannot be named 'prototype'.");3545  run.test(code, {esnext: true});3546  test.done();3547};3548exports["test for GH-1018"] = function (test) {3549  var code = [3550    "if (a = 42) {}",3551    "else if (a = 42) {}",3552    "while (a = 42) {}",3553    "for (a = 42; a = 42; a += 42) {}",3554    "do {} while (a = 42);",3555    "switch (a = 42) {}"3556  ];3557  var run = TestRun(test);3558  run.test(code, {boss: true});3559  for (var i = 0; i < code.length; i++) {3560    run.addError(i + 1, "Expected a conditional expression and instead saw an assignment.");3561  }3562  run.test(code);3563  test.done();3564};3565exports["test warnings for assignments in conditionals"] = function (test) {3566  var code = [3567    "if (a = b) { }",3568    "if ((a = b)) { }",3569    "if (a = b, a) { }",3570    "if (a = b, b = c) { }",3571    "if ((a = b, b = c)) { }",3572    "if (a = b, (b = c)) { }"3573  ];3574  var run = TestRun(test)3575    .addError(1, "Expected a conditional expression and instead saw an assignment.")3576    .addError(4, "Expected a conditional expression and instead saw an assignment.");3577  run.test(code); // es53578  test.done();3579};3580exports["test for GH-1089"] = function (test) {3581  var code = [3582    "function foo() {",3583    "    'use strict';",3584    "    Object.defineProperty(foo, 'property', {",3585    "        get: function() foo,",3586    "        set: function(value) {},",3587    "        enumerable: true",3588    "    });",3589    "}",3590    "foo;"3591  ];3592  var run = TestRun(test)3593    .addError(9, "Expected an assignment or function call and instead saw an expression.");3594  run.test(code, {moz: true});3595  run3596    .addError(4, "'function closure expressions' is only available in Mozilla JavaScript " +3597        "extensions (use moz option).");3598  run.test(code);3599  test.done();3600};3601exports["test for GH-1103"] = function (test) {3602  var code = [ "var ohnoes = 42;" ];3603  var run = TestRun(test);3604  var patch = true;3605  JSHINT.addModule(function (linter) {3606    if (!patch) {3607      return;3608    }3609    patch = false;3610    var ohnoes = "oh noes";3611    Array.prototype.ohnoes = function () {3612      linter.warn("E024", { line: 1, char: 1, data: [ ohnoes += "!" ] });3613    };3614  });3615  run.test(code);3616  test.done();3617  delete Array.prototype.ohnoes;3618};3619exports["test for GH-1105"] = function (test) {3620  var code = [3621    "while (true) {",3622    "    if (true) { break }",3623    "}"3624  ];3625  var run = TestRun(test)3626    .addError(2, "Missing semicolon.");3627  run.test(code);3628  test.done();3629};3630exports["test for crash with invalid condition"] = function (test) {3631  var code = [3632    "do {} while ();",3633    "do {} while (,);",3634    "do {} while (a,);",3635    "do {} while (,b);",3636    "do {} while (());",3637    "do {} while ((,));",3638    "do {} while ((a,));",3639    "do {} while ((,b));"3640  ];3641  // As long as jshint doesn't crash, it doesn't matter what these errors3642  // are. Feel free to adjust these if they don't match the output.3643  var run = TestRun(test)3644    .addError(1, "Expected an identifier and instead saw ')'.")3645    .addError(1, "Expected ')' to match '(' from line 1 and instead saw ';'.")3646    .addError(2, "Expected an identifier and instead saw ','.")3647    .addError(3, "Unexpected ')'.")3648    .addError(4, "Expected an identifier and instead saw ','.")3649    .addError(4, "Expected ')' to match '(' from line 4 and instead saw 'b'.")3650    .addError(4, "Expected an identifier and instead saw ')'.")3651    .addError(6, "Expected an identifier and instead saw ','.")3652    .addError(7, "Unexpected ')'.")3653    .addError(7, "Expected an identifier and instead saw ')'.")3654    .addError(7, "Expected ')' to match '(' from line 7 and instead saw ';'.")3655    .addError(8, "Expected an identifier and instead saw ','.")3656    .addError(8, "Expected ')' to match '(' from line 8 and instead saw 'b'.")3657    .addError(8, "Expected an identifier and instead saw ')'.");3658  run.test(code, {asi: true, expr: true});3659  test.done();3660};3661exports["test 'yield' in compound expressions."] = function (test) {3662  var code = fs.readFileSync(path.join(__dirname, "./fixtures/yield-expressions.js"), "utf8");3663  var run = TestRun(test)3664    .addError(22, "Did you mean to return a conditional instead of an assignment?")3665    .addError(31, "Did you mean to return a conditional instead of an assignment?");3666  run.test(code, {maxerr: 1000, expr: true, esnext: true});3667  // These are line-column pairs for the Mozilla paren errors.3668  var needparen = [3669    // comma3670    [ 5,  5], [ 6,  8], [ 7,  5], [11,  5], [12,  8], [13,  5],3671    // yield in yield3672    [18, 11], [19, 17], [19, 11], [20, 11], [20,  5], [21, 11], [21,  5], [21, 26], [22, 22],3673    [23, 22], [23, 11], [27, 11], [28, 17], [28, 11], [29, 11], [29,  5], [30, 11], [30,  5],3674    [30, 24], [31, 22], [32, 11], [32, 20],3675    // infix3676    [51, 10], [53, 10], [54, 16], [57, 10], [58,  5], [59, 10], [60,  5], [60, 14],3677    // prefix3678    [64,  6], [65,  7], [66,  6], [67,  7], [70,  6], [71,  7],3679    // ternary3680    [77,  5], [78,  5], [78, 13], [79,  5], [79, 13], [79, 41], [82,  5], [83,  5], [83, 13],3681    [84,  5], [84, 13], [84, 37]3682  ];3683  needparen.forEach(function (lc) {3684    run.addError(lc[0], "Mozilla requires the yield expression to be parenthesized here.",3685                 {character: lc[1]});3686  });3687  run3688    .addError(1, "'function*' is only available in ES6 (use esnext option).")3689    .addError(74, "'function*' is only available in ES6 (use esnext option).");3690  run.test(code, {maxerr: 1000, expr: true, moz: true});3691  test.done();3692};3693exports["test for GH-387"] = function (test) {3694  var code = [3695    "var foo = a",3696    "delete foo.a;"3697  ];3698  var run = TestRun(test)3699    .addError(1, "Missing semicolon.");3700  run.test(code); // es53701  test.done();3702};3703exports["test for line breaks with 'yield'"] = function (test) {3704  var code = [3705    "function* F() {",3706    "    a = b + (yield",3707    "    c",3708    "    );",3709    "    d = yield",3710    "    + e;",3711    "    f = (yield",3712    "    , g);",3713    "    h = yield",3714    "    ? i : j;",3715    "    k = l ? yield",3716    "    : m;",3717    "    n = o ? p : yield",3718    "    + r;",3719    "}"3720  ];3721  var run = TestRun(test)3722    .addError(3, "Bad line breaking before 'c'.")3723    .addError(6, "Bad line breaking before '+'.")3724    .addError(8, "Comma warnings can be turned off with 'laxcomma'.")3725    .addError(7, "Bad line breaking before ','.")3726    .addError(10, "Bad line breaking before '?'.")3727    .addError(14, "Bad line breaking before '+'.");3728  run.test(code, {esnext: true});3729  // Mozilla assumes the statement has ended if there is a line break3730  // following a `yield`. This naturally causes havoc with the subsequent3731  // parse.3732  //3733  // Note: there is one exception to the line-breaking rule:3734  // ```js3735  // a ? yield3736  // : b;3737  // ```3738  run = TestRun(test)3739    .addError(1, "'function*' is only available in ES6 (use esnext option).")3740    .addError(3, "Expected ')' to match '(' from line 2 and instead saw 'c'.")3741    .addError(4, "Expected an identifier and instead saw ')'.")3742    .addError(4, "Expected an assignment or function call and instead saw an expression.")3743    .addError(6, "Expected an assignment or function call and instead saw an expression.")3744    .addError(8, "Comma warnings can be turned off with 'laxcomma'.")3745    .addError(7, "Bad line breaking before ','.")3746    .addError(10, "Expected an identifier and instead saw '?'.")3747    .addError(10, "Expected an assignment or function call and instead saw an expression.")3748    .addError(10, "Label 'i' on j statement.")3749    .addError(10, "Expected an assignment or function call and instead saw an expression.")3750    .addError(14, "Expected an assignment or function call and instead saw an expression.");3751  run.test(code, {moz: true, asi: true});3752  run3753    .addError(2, "Line breaking error 'yield'.")3754    .addError(3, "Missing semicolon.")3755    .addError(5, "Line breaking error 'yield'.")3756    .addError(5, "Missing semicolon.")3757    .addError(7, "Line breaking error 'yield'.")3758    .addError(9, "Line breaking error 'yield'.")3759    .addError(9, "Missing semicolon.")3760    .addError(10, "Missing semicolon.")3761    .addError(11, "Line breaking error 'yield'.")3762    .addError(13, "Line breaking error 'yield'.")3763    .addError(13, "Missing semicolon.");3764  run.test(code, {moz: true});3765  test.done();3766};3767exports["regression for GH-1227"] = function (test) {3768  var src = fs.readFileSync(__dirname + "/fixtures/gh1227.js", "utf8");3769  TestRun(test)3770    .addError(14, "Unreachable 'return' after 'return'.")3771    .test(src);3772  test.done();3773};3774exports["test for 'break' in switch case + curly braces"] = function (test) {3775  var code = [3776    "switch (foo) {",3777    "  case 1: { break; }",3778    "  case 2: { return; }",3779    "  case 3: { throw 'Error'; }",3780    "  case 11: {",3781    "    while (true) {",3782    "      break;",3783    "    }",3784    "  }",3785    "  default: break;",3786    "}"3787  ];3788  // No error for case 1, 2, 3.3789  var run = TestRun(test)3790    .addError(9, "Expected a 'break' statement before 'default'.")3791    .test(code);3792  test.done();3793};3794exports["test for 'break' in switch case in loop + curly braces"] = function (test) {3795  var code = [3796    "while (true) {",3797    "  switch (foo) {",3798    "    case 1: { break; }",3799    "    case 2: { return; }",3800    "    case 3: { throw 'Error'; }",3801    "    case 4: { continue; }",3802    "    case 11: {",3803    "      while (true) {",3804    "        break;",3805    "      }",3806    "    }",3807    "    default: break;",3808    "  }",3809    "}"3810  ];3811  // No error for case 1, 2, 3, 4.3812  var run = TestRun(test)3813    .addError(11, "Expected a 'break' statement before 'default'.")3814    .test(code);3815  test.done();3816};3817exports["allow expression with a comma in switch case condition"] = function (test) {3818  var code = [3819    "switch (false) {",3820    "  case x = 1, y = x: { break; }",3821    "}"3822  ]3823  var run = TestRun(test).test(code);3824  test.done();3825};3826exports["/*jshint ignore */ should be a good option and only accept start, end or line as values"] = function (test) {3827  var code = [3828    "/*jshint ignore:start*/",3829    "/*jshint ignore:end*/",3830    "/*jshint ignore:line*/",3831    "/*jshint ignore:badvalue*/"3832  ];3833  TestRun(test)3834    .addError(4, "Bad option value.")3835    .test(code);3836  test.done();3837};3838exports["/*jshint ignore */ should allow the linter to skip blocked-out lines to continue finding errors in the rest of the code"] = function (test) {3839  var code = fs.readFileSync(__dirname + "/fixtures/gh826.js", "utf8");3840  TestRun(test)3841    .addError(33, "Use '===' to compare with '0'.")3842    .test(code);3843  test.done();3844};3845exports["/*jshint ignore */ should be detected even with leading and/or trailing whitespace"] = function (test) {3846  var code = [3847    "  /*jshint ignore:start */",     // leading whitespace3848    "   if (true) { alert('sup') }", // should be ignored3849    "  /*jshint ignore:end */  ",     // leading and trailing whitespace3850    "   if (true) { alert('sup') }", // should not be ignored3851    "  /*jshint ignore:start */   ",  // leading and trailing whitespace3852    "   if (true) { alert('sup') }", // should be ignored3853    "  /*jshint ignore:end */   "     // leading and trailing whitespace3854  ];3855  TestRun(test)3856    .addError(4, "Missing semicolon.")3857    .test(code);3858  test.done();3859};3860exports["should be able to ignore a single line with a trailing comment: // jshint:ignore"] = function (test) {3861  var code = fs.readFileSync(__dirname + "/fixtures/gh870.js", "utf8");3862  TestRun(test).test(code, { unused: true });3863  test.done();3864};3865exports["regression test for GH-1431"] = function (test) {3866  // The code is invalid but it should not crash JSHint.3867  TestRun(test)3868    .addError(1, "Use '!==' to compare with 'null'.")3869    .addError(1, "Expected ';' and instead saw ')'.")3870    .addError(1, "Expected ')' and instead saw ';'.")3871    .addError(1, "Expected an identifier and instead saw ';'.")3872    .addError(1, "Expected ')' to match '(' from line 1 and instead saw 'i'.")3873    .addError(1, "Expected an identifier and instead saw ')'.")3874    .test("for (i=0; (arr[i])!=null); i++);");3875  test.done();3876};3877exports["jshint ignore:start/end should be detected using single line comments"] = function (test) {3878  var code = [3879    "// jshint ignore:start",3880    "var a;",3881    "// jshint ignore:end",3882    "var b;"3883  ];3884  TestRun(test)3885    .addError(4, "'b' is defined but never used.")3886    .test(code, { unused: true });3887  test.done();3888};3889exports["test destructuring function parameters as es5"] = function (test) {3890  var src = fs.readFileSync(__dirname + "/fixtures/destparam.js", "utf8");3891  TestRun(test)3892    .addError(4, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3893    .addError(4, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3894    .addError(5, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3895    .addError(5, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3896    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3897    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3898    .addError(6, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3899    .addError(7, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3900    .addError(7, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3901    .addError(7, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3902    .addError(7, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3903    .addError(10, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3904    .addError(10, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3905    .addError(11, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3906    .addError(11, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3907    .addError(14, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3908    .addError(14, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3909    .addError(15, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3910    .addError(15, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3911    .addError(16, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3912    .addError(16, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3913    .addError(16, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3914    .addError(17, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3915    .addError(17, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3916    .addError(18, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3917    .addError(18, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3918    .addError(21, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3919    .addError(21, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3920    .addError(21, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3921    .addError(22, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3922    .addError(22, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3923    .addError(22, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3924    .addError(23, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3925    .addError(23, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3926    .addError(23, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3927    .addError(24, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3928    .addError(24, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3929    .addError(24, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3930    .addError(27, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3931    .addError(27, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3932    .addError(27, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3933    .addError(28, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3934    .addError(28, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3935    .addError(28, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3936    .addError(29, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3937    .addError(29, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3938    .addError(29, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3939    .addError(30, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3940    .addError(30, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3941    .addError(30, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3942    .addError(31, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3943    .addError(31, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3944    .addError(31, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3945  .test(src, {unused: true, undef: true, maxerr: 100});3946  test.done();3947};3948exports["test destructuring function parameters as legacy JS"] = function (test) {3949  var src = fs.readFileSync(__dirname + "/fixtures/destparam.js", "utf8");3950  TestRun(test)3951    .addError(4, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3952    .addError(4, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3953    .addError(5, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3954    .addError(5, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3955    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3956    .addError(6, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3957    .addError(6, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3958    .addError(7, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3959    .addError(7, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3960    .addError(7, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3961    .addError(7, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3962    .addError(10, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3963    .addError(10, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3964    .addError(11, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3965    .addError(11, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3966    .addError(14, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3967    .addError(14, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3968    .addError(15, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3969    .addError(15, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3970    .addError(16, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3971    .addError(16, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3972    .addError(16, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3973    .addError(17, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3974    .addError(17, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3975    .addError(18, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3976    .addError(18, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3977    .addError(21, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3978    .addError(21, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3979    .addError(21, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3980    .addError(22, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3981    .addError(22, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3982    .addError(22, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3983    .addError(23, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3984    .addError(23, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3985    .addError(23, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3986    .addError(24, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3987    .addError(24, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3988    .addError(24, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3989    .addError(27, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3990    .addError(27, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3991    .addError(27, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3992    .addError(28, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3993    .addError(28, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3994    .addError(28, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3995    .addError(29, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3996    .addError(29, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3997    .addError(29, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")3998    .addError(30, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")3999    .addError(30, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")4000    .addError(30, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")4001    .addError(31, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")4002    .addError(31, "'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).")4003    .addError(31, "'arrow function syntax (=>)' is only available in ES6 (use esnext option).")4004    .test(src, {es3: true, unused: true, undef: true, maxerr: 100});4005  test.done();4006};4007exports["test for parentheses in odd-numbered token"] = function (test) {4008  var code = [4009    "let f, b;",4010    "let a = x => ({ f: f(x) });",4011    "b = x => x;"4012  ];4013  TestRun(test)4014    .test(code, {esnext: true});4015  test.done();4016};4017exports["regression crash from GH-1573"] = function (test) {4018  TestRun(test)4019    .addError(1, "Expected an identifier and instead saw 'var'.")4020    .addError(1, "Expected ']' to match '[' from line 1 and instead saw 'foo'.")4021    .addError(1, "Expected an identifier and instead saw ']'.")4022    .addError(1, "Expected an assignment or function call and instead saw an expression.")4023    .addError(1, "Missing semicolon.")4024    .test("[var foo = 1;]");4025  test.done();4026};4027exports["make sure we don't throw errors on removed options"] = function (test) {4028  TestRun(test).test("a();", { nomen: true, onevar: true, passfail: true, white: true });4029  test.done();4030};4031exports["'for of' shouldn't be subject to 'for in' rules"] = function (test) {4032  TestRun(test)4033    .test("for (let x of [1, 2, 3]) { console.log(x); }", { forin: true, esnext: true });4034  test.done();4035};4036exports["Ignore strings containing braces within array literal declarations"] = function (test) {4037  TestRun(test).test("var a = [ '[' ];");...