How to use transformFn method in istanbul

Best JavaScript code snippet using istanbul

set-prop.test.js

Source:set-prop.test.js

1/* eslint-disable no-undefined */2/* eslint-disable no-console */3import setProp from '../../../src/scripts/common/util/set-prop.js'4import mockConsole from 'jest-mock-console'5describe('setProp', () => {6	let target7	let restoreConsole8	beforeEach(() => {9		target = {}10		restoreConsole = mockConsole('error')11	})12	afterEach(() => {13		restoreConsole()14	})15	test('sets default values when no attrs passed', () => {16		setProp(target, {}, 'propName', 'default-value')17		expect(target).toEqual({18			propName: 'default-value'19		})20	})21	test('sets default values when attr does not exist', () => {22		setProp(target, { myProp: 'new-value' }, 'propName', 'default-value')23		expect(target).toEqual({24			propName: 'default-value'25		})26	})27	test('sets values if in attrs', () => {28		setProp(target, { myProp: 'new-value' }, 'myProp', 'default-value')29		expect(target).toEqual({30			myProp: 'new-value'31		})32	})33	test('calls set function if available', () => {34		const transformFn = jest.fn()35		transformFn.mockImplementation(x => x)36		setProp(target, { myProp: 'new-value' }, 'myProp', 'default-value', transformFn)37		expect(target).toEqual({38			myProp: 'new-value'39		})40		expect(transformFn).toHaveBeenCalledTimes(1)41		expect(transformFn).toHaveBeenCalledWith('new-value')42	})43	test('set function value is used to alter state', () => {44		const transformFn = jest.fn()45		transformFn.mockReturnValue('result-from-transformFn')46		setProp(target, { myProp: 'new-value' }, 'myProp', 'default-value', transformFn)47		expect(target).toEqual({48			myProp: 'result-from-transformFn'49		})50		expect(transformFn).toHaveBeenCalledTimes(1)51	})52	test('sets to default value if set function returns null', () => {53		setProp(target, { myProp: 'new-value' }, 'myProp', 'default-value', () => null)54		expect(target).toEqual({55			myProp: 'default-value'56		})57	})58	test('allowedValues uses default value when requested value is not allowed', () => {59		// desired value NOT in allowed values60		setProp(target, { myProp: 'new-value' }, 'myProp', 'default-value', undefined, ['other-value'])61		expect(target).toEqual({62			myProp: 'default-value'63		})64		// desired value IS in allowed values65		setProp(target, { myProp: 'new-value' }, 'myProp', 'default-value', undefined, ['new-value'])66		expect(target).toEqual({67			myProp: 'new-value'68		})69	})70	test('when transformFn throws an error, the default value is used', () => {71		const transformFn = jest.fn()72		transformFn.mockImplementation(() => {73			throw Error('mock-error')74		})75		setProp(target, { myProp: 'new-value' }, 'myProp', 'default-value', transformFn)76		expect(target).toEqual({77			myProp: 'default-value'78		})79		expect(console.error).toHaveBeenCalledTimes(2)80	})...

transformObj.spec.js

Source:transformObj.spec.js

...9			8: 0.5,10			10: 111		});12		Should(transformFn).be.a.Function();13		transformFn(3).should.equal(0);14		transformFn(4).should.equal(0);15		transformFn(5).should.equal(0.25);16		transformFn(6).should.equal(0.5);17		transformFn(7).should.equal(0.5);18		transformFn(8).should.equal(0.5);19		transformFn(9).should.equal(0.75);20		transformFn(10).should.equal(1);21		transformFn(11).should.equal(1);22	});23	it('should loopBy', function () {24		var transformFn = Transformer.transformObj({25			0: 0,26			1: 50,27			2: 50,28			3: 10029		}, 4);30		Should(transformFn).be.a.Function();31		transformFn(0).should.equal(0);32		transformFn(1).should.equal(50);33		transformFn(2).should.equal(50);34		transformFn(3).should.equal(100);35		transformFn(3.5).should.equal(50);36		transformFn(4).should.equal(0);37		transformFn(5.5).should.equal(50);38		transformFn(6.75).should.equal(87.5);39	});40	it('should support easing functions', function () {41		var ease = function (x) {42			return x * x;43		};44		var transformFn = Transformer.transformObj({45			0: 0,46			1: 50,47			2: 50,48			3: 10049		}, 4, ease);50		Should(transformFn).be.a.Function();51		transformFn(0).should.equal(0);52		transformFn(0.5).should.equal(3.125);53		transformFn(1).should.equal(12.5);54		transformFn(2).should.equal(50);55		transformFn(2.5).should.equal(50);56		transformFn(3).should.equal(62.5);57		transformFn(3.5).should.equal(93.75);58		transformFn(3.75).should.equal(48.4375);59		transformFn(4).should.equal(0);60	});61	it('should work with non-integers', function () {62		var transformFn = Transformer.transformObj({63			0: 0,64			0.5: 100,65			1: 150,66			2.0001: 20067		});68		Should(transformFn).be.a.Function();69		transformFn(0).should.be.approximately(0, 0.1);70		transformFn(0.25).should.be.approximately(50, 0.1);71		transformFn(0.5).should.be.approximately(100, 0.1);72		transformFn(0.75).should.be.approximately(125, 0.1);73		transformFn(1).should.be.approximately(150, 0.1);74		transformFn(1.5).should.be.approximately(175, 0.1);75		transformFn(2).should.be.approximately(200, 0.1);76	});77	it('should work with out of order numbers', function () {78		var transformFn = Transformer.transformObj({79			4665: 1,80			5287: 0,81			4540.599999999999: 0,82			5162.6: 183		});84		Should(transformFn).be.a.Function();85		transformFn(4500).should.equal(0);86		transformFn(4700).should.equal(1);87		transformFn(5100).should.equal(1);88		transformFn(5300).should.equal(0);89	});...

transformModule.js

Source:transformModule.js

1// @flow2import type { Module } from '../types.flow';3export type TransformFn = (module: Module) => ?Module;4export type TransformDecorator = (5  original: Module,6  transform: TransformFn7) => TransformFn;8export const identityTransform: TransformFn = (m) => m;9export const nullTransform: TransformFn = () => null;10export const identityDecorator: TransformDecorator = (m, f) => f;11export function transformModule(12  module: Module,13  transformMap: { [name: string]: TransformFn },14  decorate?: TransformDecorator = identityDecorator15): ?Module {16  const { modules: nested, ...rest } = module;17  const fn = decorate(module, transformMap[module.type] || identityTransform);18  const result = fn(rest);19  if (!result) {20    return result;21  }22  if (!nested) {23    return result;24  }25  return {26    ...result,27    modules: nested28      .map((child) => transformModule(child, transformMap, decorate))29      .filter(Boolean),30  };...

Using AI Code Generation

1var istanbul = require('istanbul');2var instrumenter = new istanbul.Instrumenter();3var code = 'function add(x, y) { return x + y; }';4var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');5console.log(instrumentedCode);6function add(x, y) {7    y = y || 0;8    return x + y;9}10var istanbul = require('istanbul');11var instrumenter = new istanbul.Instrumenter();12var code = 'function add(x, y) { return x + y; }';13var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');14var transformFn = instrumenter.transform.bind(instrumenter);15var instrumentedCode = transformFn(code, 'test.js');16console.log(instrumentedCode);17function add(x, y) {18    y = y || 0;19    return x + y;20}21var istanbul = require('istanbul');22var instrumenter = new istanbul.Instrumenter();23var code = 'function add(x, y) { return x + y; }';24var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');25var transformFn = instrumenter.transform.bind(instrumenter);26var instrumentedCode = transformFn(code, 'test.js');27console.log(instrumentedCode);28function add(x, y) {29    y = y || 0;30    return x + y;31}32var istanbul = require('istanbul');

Using AI Code Generation

1var istanbul = require('istanbul');2var transformFn = istanbul.hook.hookRequire();3var instrumenter = new istanbul.Instrumenter();4var code = 'var a = 10;';5var transformedCode = transformFn(code, 'test.js');6var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');7console.log('transformedCode', transformedCode);8console.log('instrumentedCode', instrumentedCode);

Using AI Code Generation

1const fs = require('fs');2const instrumenter = require('istanbul-lib-instrument');3const code = fs.readFileSync('test.js', 'utf8');4const instrumentedCode = instrumenter.instrumentSync(code, 'test.js');5Instrumenting code using instrumenter.instrument()6const fs = require('fs');7const instrumenter = require('istanbul-lib-instrument');8const code = fs.readFileSync('test.js', 'utf8');9const instrumentedCode = instrumenter.instrument(code, 'test.js', function (err, instrumentedCode) {10    if (err) {11    }12});13Instrumenting code using instrumenter.instrumentSync()14const fs = require('fs');15const instrumenter = require('istanbul-lib-instrument');16const code = fs.readFileSync('test.js', 'utf8');17const instrumentedCode = instrumenter.instrumentSync(code, 'test.js');18Instrumenting code using instrumenter.instrumentSync() with a custom visitor19const fs = require('fs');20const instrumenter = require('istanbul-lib-instrument');21const code = fs.readFileSync('test.js', 'utf8');22const instrumentedCode = instrumenter.instrumentSync(code, 'test.js', {23    visitor: {24        FunctionDeclaration: function (path) {25        }26    }27});28Instrumenting code using instrumenter.instrumentSync() with a custom coverage variable29const fs = require('fs');30const instrumenter = require('istanbul-lib-instrument');31const code = fs.readFileSync('test.js', 'utf8');32const instrumentedCode = instrumenter.instrumentSync(code,

Using AI Code Generation

1var istanbul = require('istanbul');2var instrumenter = new istanbul.Instrumenter();3var fs = require('fs');4var path = require('path');5var transformFn = instrumenter.instrumentSync.bind(instrumenter);6var file = fs.readFileSync(path.join(__dirname, 'test.js'), 'utf8');7var transformed = transformFn(file, 'test.js');8fs.writeFileSync(path.join(__dirname, 'test-coverage.js'), transformed);9var istanbul = require('istanbul');10var instrumenter = new istanbul.Instrumenter();11var fs = require('fs');12var path = require('path');13var transformFn = instrumenter.instrumentSync.bind(instrumenter);14var file = fs.readFileSync(path.join(__dirname, 'test.js'), 'utf8');15var transformed = transformFn(file, 'test.js');16fs.writeFileSync(path.join(__dirname, 'test-coverage.js'), transformed);17var istanbul = require('istanbul');18var instrumenter = new istanbul.Instrumenter();19var fs = require('fs');20var path = require('path');21var transformFn = instrumenter.instrumentSync.bind(instrumenter);22var file = fs.readFileSync(path.join(__dirname, 'test.js'), 'utf8');23var transformed = transformFn(file, 'test.js');24fs.writeFileSync(path.join(__dirname, 'test-coverage.js'), transformed);25var istanbul = require('istanbul');26var instrumenter = new istanbul.Instrumenter();27var fs = require('fs');28var path = require('path');29var transformFn = instrumenter.instrumentSync.bind(instrumenter);30var file = fs.readFileSync(path.join(__dirname, 'test.js'), 'utf8');31var transformed = transformFn(file, 'test.js');32fs.writeFileSync(path.join(__dirname, 'test-coverage

Using AI Code Generation

1var transformFn = require('istanbul').transform;2var instrumented = transformFn('var x = 1;', 'test.js');3console.log(instrumented);4var instrumenter = require('istanbul').Instrumenter();5var instrumented = instrumenter.instrumentSync('var x = 1;', 'test.js');6console.log(instrumented);7var instrumenter = require('istanbul').Instrumenter();8instrumenter.instrument('var x = 1;', 'test.js', function (err, instrumented) {9    console.log(instrumented);10});11var instrumenter = require('istanbul').Instrumenter();12instrumenter.instrument('var x = 1;', 'test.js', function (err, instrumented) {13    console.log(instrumented);14});15var instrumenter = require('istanbul').Instrumenter();16instrumenter.instrument('var x = 1;', 'test.js', function (err, instrumented) {17    console.log(instrumented);18});19var instrumenter = require('istanbul').Instrumenter();20instrumenter.instrument('var x = 1;', 'test.js', function (err, instrumented) {21    console.log(instrumented);22});23var instrumenter = require('istanbul').Instrumenter();24instrumenter.instrument('var x = 1;', 'test.js', function (err, instrumented) {25    console.log(instrumented);26});27var instrumenter = require('istanbul').Instrumenter();28instrumenter.instrument('var x = 1;', 'test.js', function (err, instrumented) {29    console.log(instrumented);30});31var instrumenter = require('istanbul').Instrumenter();32instrumenter.instrument('var x = 1;', 'test.js', function (err, instrumented

Using AI Code Generation

1var istanbul = require('istanbul');2var transformer = istanbul.transformer;3var path = require('path');4var transformFn = transformer.createTransformer();5var fileContent = fs.readFileSync(path.resolve('src', 'app.js'), 'utf8');6var transformedCode = transformFn(fileContent);7fs.writeFileSync(path.resolve('src', 'app-istanbul.js'), transformedCode);8require('./src/app-istanbul.js');9Statements: 100% ( 5/5 )10Branches  : 100% ( 0/0 )11Functions  : 100% ( 1/1 )12Lines      : 100% ( 5/5 )13"scripts": {14  }15module.exports = function (config) {16  config.set({17    preprocessors: {18    },19    coverageReporter: {20    },

Using AI Code Generation

1var istanbul = require('istanbul');2var instrumenter = new istanbul.Instrumenter();3var code = 'var a = 10;';4var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');5console.log(instrumentedCode);6var a = 10;7var istanbul = require('istanbul');8var instrumenter = new istanbul.Instrumenter();9var code = 'var a = 10;';10var instrumentedCode = instrumenter.instrumentSync(code, 'test.js', {variable: 'b'});11console.log(instrumentedCode);12var b = 10;13var istanbul = require('istanbul');14var instrumenter = new istanbul.Instrumenter();15var code = 'var a = 10;';16var instrumentedCode = instrumenter.instrumentSync(code, 'test.js', {variable: 'b'});17console.log(instrumentedCode);18var b = 10;19var istanbul = require('istanbul');20var instrumenter = new istanbul.Instrumenter();21var code = 'var a = 10;';22var instrumentedCode = instrumenter.instrumentSync(code, 'test.js', {variable: 'b'});

Using AI Code Generation

1var utils = require('./utils');2var result = utils.add(1, 2);3console.log(result);4var add = function(a, b) {5    return a + b;6};7module.exports.add = add;8FN:1,(anonymous_0)9FN:1,(anonymous_1)10FN:1,(anonymous_2)11FN:1,(anonymous_3)12FN:1,(anonymous_4)13FN:1,(anonymous_5)14FN:1,(anonymous_6)15FN:1,(anonymous_7)16FN:1,(anonymous_8)17FN:1,(anonymous_9)18FN:1,(anonymous_10)19FN:1,(anonymous_11)20FN:1,(anonymous_12)21FN:1,(anonymous_13)22FN:1,(anonymous_14)23FN:1,(anonymous_15)24FN:1,(anonymous_16)25FN:1,(anonymous_17)26FN:1,(anonymous_18)27FN:1,(anonymous_19)28FN:1,(anonymous_20)29FN:1,(anonymous_21)30FN:1,(anonymous_22)31FN:1,(anonymous_23)32FN:1,(anonymous_24)33FN:1,(anonymous_25)34FN:1,(anonymous_26)35FN:1,(anonymous_27)36FN:1,(anonymous_28)37FN:1,(anonymous_29)38FN:1,(anonymous_30)39FN:1,(anonymous_31)40FN:1,(anonymous_32)41FN:1,(anonymous_33)

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