How to use firstDifferenceIndex method in Playwright Internal

Best JavaScript code snippet using playwright-internal

formula.js

Source:formula.js Github

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1import katex from 'katex'2function kt (string) {3 return katex.renderToString(string, {4 throwOnError: false5 })6}7class Expression {8 constructor () {9 this.depth = 110 }11 printStyled () {12 if (this.style !== undefined) {13 return `<span class='${this.style}'>${this.printUnicode()}</span>`14 }15 return this.printSubStyled()16 }17 printKatexStyled () {18 const string = this.printStyled()19 const index1 = string.indexOf('<span')20 if (index1 === -1) {21 return kt(string)22 }23 const index2 = string.indexOf('\'>', index1)24 const index3 = string.indexOf('</span>', index2)25 return `${kt(string.substring(0, index1))}<span class='${this.style}'>${kt(string.substring(index2 + 2, index3))}</span>${kt(string.substring(index3 + 7))}`26 }27}28export class ParenthesisGroup extends Expression {29 constructor (parenthesisLeft, parenthesisRight, expression) {30 super()31 this.expression = expression32 this.parenthesisLeft = parenthesisLeft33 this.parenthesisRight = parenthesisRight34 this.setDepth(this.depth)35 }36 printUnicode () {37 return `${this.parenthesisLeft}${this.expression.printUnicode()}${this.parenthesisRight}`38 }39 printSubStyled () {40 return `${this.parenthesisLeft}${this.expression.printStyled()}${this.parenthesisRight}`41 }42 length () {43 if (this.expression === undefined) {44 return 245 }46 return 2 + this.expression.length()47 }48 setDepth (depth) {49 this.depth = depth50 if (this.expression !== undefined) {51 this.expression.setDepth(this.depth + 1)52 }53 }54}55export class Literal extends Expression {56 constructor (expression) {57 super()58 this.expression = expression59 }60 printUnicode () {61 return `${this.expression}`62 }63 printSubStyled () {64 return `${this.expression}`65 }66 length () {67 return 168 }69 setDepth (depth) {70 this.depth = depth71 }72}73export class UnaryOperator extends Expression {74 constructor (operator, expression) {75 super()76 this.operator = operator77 this.expression = expression78 this.setDepth(this.depth)79 }80 printUnicode () {81 return `${this.operator}${this.expression.printUnicode()}`82 }83 printSubStyled () {84 return `${this.operator}${this.expression.printStyled()}`85 }86 length () {87 return this.operator.length + this.expression.length()88 }89 setDepth (depth) {90 this.depth = depth91 if (this.expression !== null) {92 this.expression.setDepth(this.depth + 1)93 }94 }95}96export class BinaryOperator extends Expression {97 constructor (operator, lhe, rhe) {98 super()99 this.operator = operator100 this.lhe = lhe101 this.rhe = rhe102 this.setDepth(this.depth)103 }104 flatten () {105 const expressions = []106 let leftExp = this.lhe107 expressions.push(this.rhe)108 while (leftExp instanceof BinaryOperator) {109 if (leftExp.operator === this.operator) {110 expressions.unshift(leftExp.rhe)111 } else {112 break113 }114 leftExp = leftExp.lhe115 }116 expressions.unshift(leftExp)117 return new FlattenedSummation(this.operator, expressions)118 }119 setDepth (depth) {120 this.depth = depth121 if (this.lhe !== null) {122 this.lhe.setDepth(this.depth + 1)123 }124 if (this.rhe !== null) {125 this.rhe.setDepth(this.depth + 1)126 }127 }128 printUnicode () {129 return `${this.lhe.printUnicode()}${this.operator}${this.rhe.printUnicode()}`130 }131 printSubStyled () {132 return `${this.lhe.printStyled()}${this.operator}${this.rhe.printStyled()}`133 }134 length () {135 if (this.rhe !== null) {136 return 1 + this.lhe.length() + this.rhe.length()137 }138 return 1 + this.lhe.length()139 }140}141export class TernaryOperator extends Expression {142 constructor (operator, e1, e2, e3) {143 super()144 this.operator = operator145 this.e1 = e1146 this.e2 = e2147 this.e3 = e3148 this.setDepth(this.depth)149 }150 setDepth (depth) {151 this.depth = depth152 if (this.e1 !== null) {153 this.e1.setDepth(this.depth + 1)154 }155 if (this.e2 !== null) {156 this.e2.setDepth(this.depth + 1)157 }158 if (this.e3 !== null) {159 this.e3.setDepth(this.depth + 1)160 }161 }162 printUnicode () {163 return `${this.operator.o1}${this.e1.printUnicode()}${this.operator.o2}${this.e2.printUnicode()}${this.operator.o3}${this.e3.printUnicode()}`164 }165 printSubStyled () {166 return `${this.operator.o1}${this.e1.printStyled()}${this.operator.o2}${this.e2.printStyled()}${this.operator.o3}${this.e3.printStyled()}`167 }168 length () {169 return 3 + this.e1.length() + this.e2.length() + this.e3.length()170 }171}172class FlattenedSummation extends Expression {173 constructor (operator, expressions) {174 super()175 this.operator = operator176 this.expressions = expressions177 this.setDepth(this.depth)178 }179 printUnicode () {180 const exp = this.expressions.map(e => e.printUnicode())181 const reducer = (accumulator, currentValue) => `${accumulator}${this.operator}${currentValue}`182 return exp.reduce(reducer)183 }184 printSubStyled () {185 const exp = this.expressions.map(e => e.printStyled())186 const reducer = (accumulator, currentValue) => `${accumulator}${this.operator}${currentValue}`187 return exp.reduce(reducer)188 }189 printStyled () {190 if (this.style !== undefined) {191 const exp = this.expressions.map(e => e.printUnicode())192 const reducer = (accumulator, currentValue, currentIndex) => {193 if (currentIndex === this.firstDifferenceIndex && currentIndex === this.lastDifferenceIndex) {194 return `${accumulator}${this.operator}${this.expressions[currentIndex].printStyled()}`195 } else if (currentIndex === this.firstDifferenceIndex) {196 return `${accumulator}${this.operator}<span class='${this.style}'>${currentValue}`197 } else if (currentIndex === this.lastDifferenceIndex) {198 return `${accumulator}${this.operator}${currentValue}</span>`199 } else {200 return `${accumulator}${this.operator}${currentValue}`201 }202 }203 if (this.firstDifferenceIndex === 0) {204 if (this.lastDifferenceIndex === 0) {205 exp[0] = this.expressions[0].printStyled()206 } else {207 exp[0] = `<span class='${this.style}'>${exp[0]}`208 }209 }210 return exp.reduce(reducer)211 }212 return this.printSubStyled()213 }214 setDepth (depth) {215 this.depth = depth216 for (const expression of this.expressions) {217 expression.setDepth(this.depth + 1)218 }219 }220}221const baseOptions = {222 unaryOperators: [],223 binaryOperators: [],224 ternaryOperators: [],225 implicitAssociativeBinaryOperators: [],226 firstOrderOperators: [],227 implicitPrecendence: [],228 literals: [],229 leftParentheses: ['('], // Index must match the right parenthesis230 rightParentheses: [')']231}232function matchesStart (options, string) {233 // See if the start of string matches one of the strings in options. This allows operators with multiple characters234 for (const option of options) {235 if (option === string.substring(0, option.length)) {236 return string.substring(0, option.length)237 }238 }239 return null240}241export class Formula {242 constructor (formula, options) {243 this.options = Object.assign({}, baseOptions, options)244 this.error = null245 this.result = this.parse(formula, 0)246 }247 parse (expressionString, givenContextIndex) {248 let leftExpression = null249 let contextIndex = null250 while (expressionString && expressionString.length > 0 && this.error === null) {251 if (leftExpression === null) {252 contextIndex = givenContextIndex + 1253 } else {254 contextIndex = givenContextIndex + leftExpression.length() + 1255 }256 // Unary257 if (matchesStart(this.options.unaryOperators, expressionString) !== null) {258 if (leftExpression !== null) {259 this.error = {260 message: 'Missing operator',261 key: 'shared.syntaxError.missingOperator',262 params: {263 index: contextIndex,264 length: 0265 }266 }267 return268 }269 const op = matchesStart(this.options.unaryOperators, expressionString)270 const unaryExpression = this.findFirstExpression(expressionString.substring(op.length), contextIndex + op.length)271 leftExpression = new UnaryOperator(op, unaryExpression.exp)272 expressionString = unaryExpression.tailString273 continue274 }275 // Binary276 if (this.options.binaryOperators.includes(expressionString[0])) {277 if (leftExpression === null) {278 this.error = {279 message: 'Missing operand',280 key: 'shared.syntaxError.missingOperand',281 params: {282 index: contextIndex,283 length: 0284 }285 }286 return287 }288 if (leftExpression instanceof BinaryOperator) {289 const lho = leftExpression.operator290 const rho = expressionString[0]291 if (this.options.implicitPrecendence.some(e => e.weak === rho && e.strong === lho)) {292 const rightExpression = this.findFirstExpression(expressionString.substring(1), contextIndex + 1)293 leftExpression.rhe = new BinaryOperator(expressionString[0], leftExpression.rhe, rightExpression.exp)294 expressionString = rightExpression.tailString295 continue296 }297 if (this.options.implicitPrecendence.some(e => e.strong === rho && e.weak === lho)) {298 const rightExpression = this.findFirstExpression(expressionString.substring(1), contextIndex + 1)299 leftExpression = new BinaryOperator(expressionString[0], leftExpression, rightExpression.exp)300 expressionString = rightExpression.tailString301 continue302 }303 if (lho !== rho || !this.options.implicitAssociativeBinaryOperators.includes(rho)) {304 this.error = {305 message: 'Ambiguous associativity',306 key: 'shared.syntaxError.ambiguougAssoc',307 params: {308 index: contextIndex,309 length: 1310 }311 }312 return313 }314 if (lho !== rho && this.options.firstOrderOperators.includes(expressionString[0])) {315 this.error = {316 message: 'Operator out of order',317 key: 'shared.syntaxError.nestedFirstOrderOperator',318 params: {319 index: contextIndex,320 length: 1321 }322 }323 return324 }325 }326 const rightExpression = this.findFirstExpression(expressionString.substring(1), contextIndex + 1)327 leftExpression = new BinaryOperator(expressionString[0], leftExpression, rightExpression.exp)328 expressionString = rightExpression.tailString329 continue330 }331 // Ternary332 if (this.options.ternaryOperators.map(x => x.o1).includes(expressionString[0])) {333 const operator = this.options.ternaryOperators[this.options.ternaryOperators.map(x => x.o1).indexOf(expressionString[0])]334 if (!this.options.literals.includes(expressionString[1])) {335 this.error = {336 message: 'Invalid operand',337 key: 'shared.syntaxError.invalidOperand',338 params: {339 index: contextIndex + 1,340 length: 0341 }342 }343 return344 }345 if (expressionString[2] !== operator.o2) {346 this.error = {347 message: 'Missing operator',348 key: 'shared.syntaxError.missingOperator',349 params: {350 index: contextIndex + 2,351 length: 0352 }353 }354 return355 }356 if (!this.options.literals.includes(expressionString[3])) {357 this.error = {358 message: 'Invalid operand',359 key: 'shared.syntaxError.invalidOperand',360 params: {361 index: contextIndex + 3,362 length: 0363 }364 }365 return366 }367 if (expressionString[4] !== operator.o3) {368 this.error = {369 message: 'Missing operator',370 key: 'shared.syntaxError.missingOperator',371 params: {372 index: contextIndex + 4,373 length: 0374 }375 }376 return377 }378 const e1 = new Literal(expressionString[1])379 const e2 = new Literal(expressionString[3])380 const e3 = this.findFirstExpression(expressionString.substring(5), contextIndex + 5)381 leftExpression = new TernaryOperator(operator, e1, e2, e3.exp)382 expressionString = e3.tailString383 continue384 }385 // Literal386 if (this.options.literals.includes(expressionString[0])) {387 if (leftExpression !== null) {388 this.error = {389 message: 'Missing operator',390 key: 'shared.syntaxError.missingOperator',391 params: {392 index: contextIndex,393 length: 0394 }395 }396 return397 }398 const rightExpression = expressionString.substring(1)399 leftExpression = new Literal(expressionString[0])400 expressionString = rightExpression401 continue402 }403 // Parenthesis404 if (this.options.leftParentheses.includes(expressionString[0])) {405 const leftParenthesis = expressionString[0]406 const rightParenthesis = this.options.rightParentheses[this.options.leftParentheses.indexOf(leftParenthesis)]407 if (leftExpression !== null) {408 this.error = {409 message: 'Missing operator',410 key: 'shared.syntaxError.missingOperator',411 params: {412 index: contextIndex,413 length: 0414 }415 }416 return417 }418 let i = 1419 let numLeft = 1420 while (numLeft > 0) {421 if (i > expressionString.length) {422 this.error = {423 message: 'Missing closing parenthesis',424 key: 'shared.syntaxError.missingClose',425 params: {426 index: contextIndex,427 length: 1428 }429 }430 return431 }432 if (expressionString[i] === leftParenthesis) {433 numLeft += 1434 }435 if (expressionString[i] === rightParenthesis) {436 numLeft -= 1437 }438 i++439 }440 if (i === 2) {441 this.error = {442 message: 'Empty parentheses',443 key: 'shared.syntaxError.emptyParentheses',444 params: {445 index: contextIndex,446 length: 0447 }448 }449 return450 }451 leftExpression = new ParenthesisGroup(leftParenthesis, rightParenthesis, this.parse(expressionString.substring(1, i - 1), contextIndex))452 if (leftExpression.expression instanceof BinaryOperator && this.options.firstOrderOperators.includes(leftExpression.expression.operator)) {453 this.error = {454 message: 'Operator out of order',455 key: 'shared.syntaxError.nestedFirstOrderOperator',456 params: {457 index: contextIndex + leftExpression.expression.lhe.length() + 1,458 length: 1459 }460 }461 return462 }463 expressionString = expressionString.substring(i)464 continue465 }466 // Parenthesis467 if (this.options.rightParentheses.includes(expressionString[0])) {468 this.error = {469 message: 'Missing open parenthesis',470 key: 'shared.syntaxError.missingOpen',471 params: {472 index: contextIndex,473 length: 1474 }475 }476 return477 }478 // Error479 this.error = {480 message: 'Unexpected character',481 key: 'shared.syntaxError.unexpectedChar',482 params: {483 index: contextIndex,484 length: 1485 }486 }487 return488 }489 return leftExpression490 }491 findFirstExpression (expressionString, contextIndex) {492 // Unary493 if (matchesStart(this.options.unaryOperators, expressionString) !== null) {494 const op = matchesStart(this.options.unaryOperators, expressionString)495 const unaryExpression = this.findFirstExpression(expressionString.substring(op.length), contextIndex + op.length)496 const leftExpression = new UnaryOperator(op, unaryExpression.exp)497 return {498 exp: leftExpression,499 tailString: unaryExpression.tailString500 }501 }502 // Literals503 if (this.options.literals.includes(expressionString[0])) {504 return {505 exp: new Literal(expressionString[0]),506 tailString: expressionString.substring(1)507 }508 }509 // Ternary510 if (this.options.ternaryOperators.map(x => x.o1).includes(expressionString[0])) {511 const operator = this.options.ternaryOperators[this.options.ternaryOperators.map(x => x.o1).indexOf(expressionString[0])]512 if (!this.options.literals.includes(expressionString[1])) {513 this.error = {514 message: 'Invalid operand',515 key: 'shared.syntaxError.invalidOperand',516 params: {517 index: contextIndex + 1,518 length: 0519 }520 }521 return {522 exp: null,523 tailString: ''524 }525 }526 if (expressionString[2] !== operator.o2) {527 this.error = {528 message: 'Missing operator',529 key: 'shared.syntaxError.missingOperator',530 params: {531 index: contextIndex + 2,532 length: 0533 }534 }535 return {536 exp: null,537 tailString: ''538 }539 }540 if (!this.options.literals.includes(expressionString[3])) {541 this.error = {542 message: 'Invalid operand',543 key: 'shared.syntaxError.invalidOperand',544 params: {545 index: contextIndex + 3,546 length: 0547 }548 }549 return {550 exp: null,551 tailString: ''552 }553 }554 if (expressionString[4] !== operator.o3) {555 this.error = {556 message: 'Missing operator',557 key: 'shared.syntaxError.missingOperator',558 params: {559 index: contextIndex + 4,560 length: 0561 }562 }563 return {564 exp: null,565 tailString: ''566 }567 }568 const e1 = new Literal(expressionString[1])569 const e2 = new Literal(expressionString[3])570 const e3 = this.findFirstExpression(expressionString.substring(5), contextIndex + 5)571 return {572 exp: new TernaryOperator(operator, e1, e2, e3.exp),573 tailString: e3.tailString574 }575 }576 // Parenthesis577 if (this.options.leftParentheses.includes(expressionString[0])) {578 const leftParenthesis = expressionString[0]579 const rightParenthesis = this.options.rightParentheses[this.options.leftParentheses.indexOf(leftParenthesis)]580 let i = 1581 let numLeft = 1582 while (numLeft > 0) {583 if (i > expressionString.length) {584 this.error = {585 message: 'Missing closing parenthesis',586 key: 'shared.syntaxError.missingClose',587 params: {588 index: contextIndex,589 length: 1590 }591 }592 return {593 exp: null,594 tailString: ''595 }596 }597 if (expressionString[i] === leftParenthesis) {598 numLeft += 1599 }600 if (expressionString[i] === rightParenthesis) {601 numLeft -= 1602 }603 i++604 }605 if (i === 2) {606 this.error = {607 message: 'Empty parentheses',608 key: 'shared.syntaxError.emptyParentheses',609 params: {610 index: contextIndex + 1,611 length: 0612 }613 }614 return {615 exp: null,616 tailString: ''617 }618 }619 const parenthesisContents = this.parse(expressionString.substring(1, i - 1), contextIndex)620 if (parenthesisContents instanceof BinaryOperator && this.options.firstOrderOperators.includes(parenthesisContents.operator)) {621 this.error = {622 message: 'Operator out of order',623 key: 'shared.syntaxError.nestedFirstOrderOperator',624 params: {625 index: contextIndex + parenthesisContents.lhe.length() + 1,626 length: 1627 }628 }629 return {630 exp: null,631 tailString: ''632 }633 }634 return {635 exp: new ParenthesisGroup(leftParenthesis, rightParenthesis, parenthesisContents),636 tailString: expressionString.substring(i)637 }638 }639 this.error = {640 message: 'Missing operand',641 key: 'shared.syntaxError.missingOperand',642 params: {643 index: contextIndex,644 length: 0645 }646 }647 return {648 exp: null,649 tailString: ''650 }651 }...

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ReactMount.js

Source:ReactMount.js Github

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...28 var ELEMENT_NODE_TYPE = 1;29 var DOC_NODE_TYPE = 9;30 var DOCUMENT_FRAGMENT_NODE_TYPE = 11;31 var instancesByReactRootID = {};32 function firstDifferenceIndex(string1, string2) {33 var minLen = Math.min(string1.length, string2.length);34 for (var i = 0; i < minLen; i++) {35 if (string1.charAt(i) !== string2.charAt(i)) {36 return i;37 }38 }39 return string1.length === string2.length ? -1 : minLen;40 }41 function getReactRootElementInContainer(container) {42 if (!container) {43 return null;44 }45 if (container.nodeType === DOC_NODE_TYPE) {46 return container.documentElement;47 } else {48 return container.firstChild;49 }50 }51 function internalGetID(node) {52 return node.getAttribute && node.getAttribute(ATTR_NAME) || '';53 }54 function mountComponentIntoNode(wrapperInstance, container, transaction, shouldReuseMarkup, context) {55 var markerName;56 if (ReactFeatureFlags.logTopLevelRenders) {57 var wrappedElement = wrapperInstance._currentElement.props;58 var type = wrappedElement.type;59 markerName = 'React mount: ' + (typeof type === 'string' ? type : type.displayName || type.name);60 console.time(markerName);61 }62 var markup = ReactReconciler.mountComponent(wrapperInstance, transaction, null, ReactDOMContainerInfo(wrapperInstance, container), context);63 if (markerName) {64 console.timeEnd(markerName);65 }66 wrapperInstance._renderedComponent._topLevelWrapper = wrapperInstance;67 ReactMount._mountImageIntoNode(markup, container, wrapperInstance, shouldReuseMarkup, transaction);68 }69 function batchedMountComponentIntoNode(componentInstance, container, shouldReuseMarkup, context) {70 var transaction = ReactUpdates.ReactReconcileTransaction.getPooled(!shouldReuseMarkup && ReactDOMFeatureFlags.useCreateElement);71 transaction.perform(mountComponentIntoNode, null, componentInstance, container, transaction, shouldReuseMarkup, context);72 ReactUpdates.ReactReconcileTransaction.release(transaction);73 }74 function unmountComponentFromNode(instance, container, safely) {75 if (process.env.NODE_ENV !== 'production') {76 ReactInstrumentation.debugTool.onBeginFlush();77 }78 ReactReconciler.unmountComponent(instance, safely);79 if (process.env.NODE_ENV !== 'production') {80 ReactInstrumentation.debugTool.onEndFlush();81 }82 if (container.nodeType === DOC_NODE_TYPE) {83 container = container.documentElement;84 }85 while (container.lastChild) {86 container.removeChild(container.lastChild);87 }88 }89 function hasNonRootReactChild(container) {90 var rootEl = getReactRootElementInContainer(container);91 if (rootEl) {92 var inst = ReactDOMComponentTree.getInstanceFromNode(rootEl);93 return !!(inst && inst._hostParent);94 }95 }96 function getHostRootInstanceInContainer(container) {97 var rootEl = getReactRootElementInContainer(container);98 var prevHostInstance = rootEl && ReactDOMComponentTree.getInstanceFromNode(rootEl);99 return prevHostInstance && !prevHostInstance._hostParent ? prevHostInstance : null;100 }101 function getTopLevelWrapperInContainer(container) {102 var root = getHostRootInstanceInContainer(container);103 return root ? root._hostContainerInfo._topLevelWrapper : null;104 }105 var topLevelRootCounter = 1;106 var TopLevelWrapper = function() {107 this.rootID = topLevelRootCounter++;108 };109 TopLevelWrapper.prototype.isReactComponent = {};110 if (process.env.NODE_ENV !== 'production') {111 TopLevelWrapper.displayName = 'TopLevelWrapper';112 }113 TopLevelWrapper.prototype.render = function() {114 return this.props;115 };116 var ReactMount = {117 TopLevelWrapper: TopLevelWrapper,118 _instancesByReactRootID: instancesByReactRootID,119 scrollMonitor: function(container, renderCallback) {120 renderCallback();121 },122 _updateRootComponent: function(prevComponent, nextElement, nextContext, container, callback) {123 ReactMount.scrollMonitor(container, function() {124 ReactUpdateQueue.enqueueElementInternal(prevComponent, nextElement, nextContext);125 if (callback) {126 ReactUpdateQueue.enqueueCallbackInternal(prevComponent, callback);127 }128 });129 return prevComponent;130 },131 _renderNewRootComponent: function(nextElement, container, shouldReuseMarkup, context) {132 process.env.NODE_ENV !== 'production' ? warning(ReactCurrentOwner.current == null, '_renderNewRootComponent(): Render methods should be a pure function ' + 'of props and state; triggering nested component updates from ' + 'render is not allowed. If necessary, trigger nested updates in ' + 'componentDidUpdate. Check the render method of %s.', ReactCurrentOwner.current && ReactCurrentOwner.current.getName() || 'ReactCompositeComponent') : void 0;133 !(container && (container.nodeType === ELEMENT_NODE_TYPE || container.nodeType === DOC_NODE_TYPE || container.nodeType === DOCUMENT_FRAGMENT_NODE_TYPE)) ? process.env.NODE_ENV !== 'production' ? invariant(false, '_registerComponent(...): Target container is not a DOM element.') : _prodInvariant('37') : void 0;134 ReactBrowserEventEmitter.ensureScrollValueMonitoring();135 var componentInstance = instantiateReactComponent(nextElement, false);136 ReactUpdates.batchedUpdates(batchedMountComponentIntoNode, componentInstance, container, shouldReuseMarkup, context);137 var wrapperID = componentInstance._instance.rootID;138 instancesByReactRootID[wrapperID] = componentInstance;139 if (process.env.NODE_ENV !== 'production') {140 ReactInstrumentation.debugTool.onMountRootComponent(componentInstance._renderedComponent._debugID);141 }142 return componentInstance;143 },144 renderSubtreeIntoContainer: function(parentComponent, nextElement, container, callback) {145 !(parentComponent != null && ReactInstanceMap.has(parentComponent)) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'parentComponent must be a valid React Component') : _prodInvariant('38') : void 0;146 return ReactMount._renderSubtreeIntoContainer(parentComponent, nextElement, container, callback);147 },148 _renderSubtreeIntoContainer: function(parentComponent, nextElement, container, callback) {149 ReactUpdateQueue.validateCallback(callback, 'ReactDOM.render');150 !ReactElement.isValidElement(nextElement) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'ReactDOM.render(): Invalid component element.%s', typeof nextElement === 'string' ? ' Instead of passing a string like \'div\', pass ' + 'React.createElement(\'div\') or <div />.' : typeof nextElement === 'function' ? ' Instead of passing a class like Foo, pass ' + 'React.createElement(Foo) or <Foo />.' : nextElement != null && nextElement.props !== undefined ? ' This may be caused by unintentionally loading two independent ' + 'copies of React.' : '') : _prodInvariant('39', typeof nextElement === 'string' ? ' Instead of passing a string like \'div\', pass ' + 'React.createElement(\'div\') or <div />.' : typeof nextElement === 'function' ? ' Instead of passing a class like Foo, pass ' + 'React.createElement(Foo) or <Foo />.' : nextElement != null && nextElement.props !== undefined ? ' This may be caused by unintentionally loading two independent ' + 'copies of React.' : '') : void 0;151 process.env.NODE_ENV !== 'production' ? warning(!container || !container.tagName || container.tagName.toUpperCase() !== 'BODY', 'render(): Rendering components directly into document.body is ' + 'discouraged, since its children are often manipulated by third-party ' + 'scripts and browser extensions. This may lead to subtle ' + 'reconciliation issues. Try rendering into a container element created ' + 'for your app.') : void 0;152 var nextWrappedElement = ReactElement(TopLevelWrapper, null, null, null, null, null, nextElement);153 var nextContext;154 if (parentComponent) {155 var parentInst = ReactInstanceMap.get(parentComponent);156 nextContext = parentInst._processChildContext(parentInst._context);157 } else {158 nextContext = emptyObject;159 }160 var prevComponent = getTopLevelWrapperInContainer(container);161 if (prevComponent) {162 var prevWrappedElement = prevComponent._currentElement;163 var prevElement = prevWrappedElement.props;164 if (shouldUpdateReactComponent(prevElement, nextElement)) {165 var publicInst = prevComponent._renderedComponent.getPublicInstance();166 var updatedCallback = callback && function() {167 callback.call(publicInst);168 };169 ReactMount._updateRootComponent(prevComponent, nextWrappedElement, nextContext, container, updatedCallback);170 return publicInst;171 } else {172 ReactMount.unmountComponentAtNode(container);173 }174 }175 var reactRootElement = getReactRootElementInContainer(container);176 var containerHasReactMarkup = reactRootElement && !!internalGetID(reactRootElement);177 var containerHasNonRootReactChild = hasNonRootReactChild(container);178 if (process.env.NODE_ENV !== 'production') {179 process.env.NODE_ENV !== 'production' ? warning(!containerHasNonRootReactChild, 'render(...): Replacing React-rendered children with a new root ' + 'component. If you intended to update the children of this node, ' + 'you should instead have the existing children update their state ' + 'and render the new components instead of calling ReactDOM.render.') : void 0;180 if (!containerHasReactMarkup || reactRootElement.nextSibling) {181 var rootElementSibling = reactRootElement;182 while (rootElementSibling) {183 if (internalGetID(rootElementSibling)) {184 process.env.NODE_ENV !== 'production' ? warning(false, 'render(): Target node has markup rendered by React, but there ' + 'are unrelated nodes as well. This is most commonly caused by ' + 'white-space inserted around server-rendered markup.') : void 0;185 break;186 }187 rootElementSibling = rootElementSibling.nextSibling;188 }189 }190 }191 var shouldReuseMarkup = containerHasReactMarkup && !prevComponent && !containerHasNonRootReactChild;192 var component = ReactMount._renderNewRootComponent(nextWrappedElement, container, shouldReuseMarkup, nextContext)._renderedComponent.getPublicInstance();193 if (callback) {194 callback.call(component);195 }196 return component;197 },198 render: function(nextElement, container, callback) {199 return ReactMount._renderSubtreeIntoContainer(null, nextElement, container, callback);200 },201 unmountComponentAtNode: function(container) {202 process.env.NODE_ENV !== 'production' ? warning(ReactCurrentOwner.current == null, 'unmountComponentAtNode(): Render methods should be a pure function ' + 'of props and state; triggering nested component updates from render ' + 'is not allowed. If necessary, trigger nested updates in ' + 'componentDidUpdate. Check the render method of %s.', ReactCurrentOwner.current && ReactCurrentOwner.current.getName() || 'ReactCompositeComponent') : void 0;203 !(container && (container.nodeType === ELEMENT_NODE_TYPE || container.nodeType === DOC_NODE_TYPE || container.nodeType === DOCUMENT_FRAGMENT_NODE_TYPE)) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'unmountComponentAtNode(...): Target container is not a DOM element.') : _prodInvariant('40') : void 0;204 var prevComponent = getTopLevelWrapperInContainer(container);205 if (!prevComponent) {206 var containerHasNonRootReactChild = hasNonRootReactChild(container);207 var isContainerReactRoot = container.nodeType === 1 && container.hasAttribute(ROOT_ATTR_NAME);208 if (process.env.NODE_ENV !== 'production') {209 process.env.NODE_ENV !== 'production' ? warning(!containerHasNonRootReactChild, 'unmountComponentAtNode(): The node you\'re attempting to unmount ' + 'was rendered by React and is not a top-level container. %s', isContainerReactRoot ? 'You may have accidentally passed in a React root node instead ' + 'of its container.' : 'Instead, have the parent component update its state and ' + 'rerender in order to remove this component.') : void 0;210 }211 return false;212 }213 delete instancesByReactRootID[prevComponent._instance.rootID];214 ReactUpdates.batchedUpdates(unmountComponentFromNode, prevComponent, container, false);215 return true;216 },217 _mountImageIntoNode: function(markup, container, instance, shouldReuseMarkup, transaction) {218 !(container && (container.nodeType === ELEMENT_NODE_TYPE || container.nodeType === DOC_NODE_TYPE || container.nodeType === DOCUMENT_FRAGMENT_NODE_TYPE)) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'mountComponentIntoNode(...): Target container is not valid.') : _prodInvariant('41') : void 0;219 if (shouldReuseMarkup) {220 var rootElement = getReactRootElementInContainer(container);221 if (ReactMarkupChecksum.canReuseMarkup(markup, rootElement)) {222 ReactDOMComponentTree.precacheNode(instance, rootElement);223 return;224 } else {225 var checksum = rootElement.getAttribute(ReactMarkupChecksum.CHECKSUM_ATTR_NAME);226 rootElement.removeAttribute(ReactMarkupChecksum.CHECKSUM_ATTR_NAME);227 var rootMarkup = rootElement.outerHTML;228 rootElement.setAttribute(ReactMarkupChecksum.CHECKSUM_ATTR_NAME, checksum);229 var normalizedMarkup = markup;230 if (process.env.NODE_ENV !== 'production') {231 var normalizer;232 if (container.nodeType === ELEMENT_NODE_TYPE) {233 normalizer = document.createElement('div');234 normalizer.innerHTML = markup;235 normalizedMarkup = normalizer.innerHTML;236 } else {237 normalizer = document.createElement('iframe');238 document.body.appendChild(normalizer);239 normalizer.contentDocument.write(markup);240 normalizedMarkup = normalizer.contentDocument.documentElement.outerHTML;241 document.body.removeChild(normalizer);242 }243 }244 var diffIndex = firstDifferenceIndex(normalizedMarkup, rootMarkup);245 var difference = ' (client) ' + normalizedMarkup.substring(diffIndex - 20, diffIndex + 20) + '\n (server) ' + rootMarkup.substring(diffIndex - 20, diffIndex + 20);246 !(container.nodeType !== DOC_NODE_TYPE) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'You\'re trying to render a component to the document using server rendering but the checksum was invalid. This usually means you rendered a different component type or props on the client from the one on the server, or your render() methods are impure. React cannot handle this case due to cross-browser quirks by rendering at the document root. You should look for environment dependent code in your components and ensure the props are the same client and server side:\n%s', difference) : _prodInvariant('42', difference) : void 0;247 if (process.env.NODE_ENV !== 'production') {248 process.env.NODE_ENV !== 'production' ? warning(false, 'React attempted to reuse markup in a container but the ' + 'checksum was invalid. This generally means that you are ' + 'using server rendering and the markup generated on the ' + 'server was not what the client was expecting. React injected ' + 'new markup to compensate which works but you have lost many ' + 'of the benefits of server rendering. Instead, figure out ' + 'why the markup being generated is different on the client ' + 'or server:\n%s', difference) : void 0;249 }250 }251 }252 !(container.nodeType !== DOC_NODE_TYPE) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'You\'re trying to render a component to the document but you didn\'t use server rendering. We can\'t do this without using server rendering due to cross-browser quirks. See ReactDOMServer.renderToString() for server rendering.') : _prodInvariant('43') : void 0;253 if (transaction.useCreateElement) {254 while (container.lastChild) {255 container.removeChild(container.lastChild);256 }257 DOMLazyTree.insertTreeBefore(container, markup, null);258 } else {...

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autocorrect.js

Source:autocorrect.js Github

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...206 * @param {string} a207 * @param {string} b208 * @returns {number}209 */210function firstDifferenceIndex(a, b) {211 if (a === b) {212 return -1;213 }214 let i = 0;215 while (a[i] === b[i]) {216 ++i;217 }218 return i;219}220/**221 * Autocorrect on text input even by evaluating the keys and replacing the characters/string.222 *223 * @param {Object} event224 * @returns {void}225 */226function autocorrect(event) {227 // console.log('beforeinput', event.inputType, event.data);228 if (!(event.inputType === "insertText" || event.inputType === "insertCompositionText" || event.inputType === "insertParagraph" || event.inputType === "insertLineBreak")) {229 return;230 }231 if (!symbolpatterns) {232 throw new Error("Emoji autocorrect settings have not been received. Do not autocorrect.");233 }234 const target = event.target;235 const caretposition = getCaretPosition(target);236 if (caretposition) {237 const value = target.value || target.innerText;238 let deletecount = 0;239 let insert = event.inputType === "insertLineBreak" || event.inputType === "insertParagraph" ? "\n" : event.data;240 const inserted = insert;241 let output = false;242 // Use Unicode smart quotes243 if (quotes && (insert === "'" || insert === '"')) {244 const previouschar = value.slice(caretposition < 1 ? 0 : caretposition - 1, caretposition);245 // White space246 const re = /^\s*$/;247 if (insert === "'") {248 insert = re.test(previouschar) ? "‘" : "’";249 } else if (insert === '"') {250 insert = re.test(previouschar) ? "“" : "”";251 }252 output = true;253 }254 const previousText = value.slice(caretposition < longest ? 0 : caretposition - longest, caretposition);255 const regexResult = symbolpatterns.exec(previousText);256 // Autocorrect Unicode Symbols257 if (regexResult) {258 const length = longest - 1;259 const text = value.slice(caretposition < length ? 0 : caretposition - length, caretposition) + inserted;260 const aregexResult = symbolpatterns.exec(text);261 const aaregexResult = antipatterns.exec(text);262 if (!aaregexResult && (!aregexResult || (caretposition <= longest ? regexResult.index < aregexResult.index : regexResult.index <= aregexResult.index))) {263 insert = autocorrections[regexResult[0]] + inserted;264 deletecount = regexResult[0].length;265 output = true;266 }267 } else {268 // Convert fractions and mathematical constants to Unicode characters269 if (!output && fracts) {270 // Numbers regular expression: https://regex101.com/r/7jUaSP/10271 // Do not match version numbers: https://github.com/rugk/unicodify/issues/40272 const numberRegex = /(?<!\.)\d+(?<fractionpart>\.\d+)?$/;273 const previousText = value.slice(0, caretposition);274 const regexResult = numberRegex.exec(previousText);275 if (regexResult && insert !== ".") {276 const text = value.slice(0, caretposition) + inserted;277 const aregexResult = numberRegex.exec(text);278 if (!aregexResult) {279 const label = outputLabel(regexResult[0], regexResult.groups.fractionpart);280 const index = firstDifferenceIndex(label, regexResult[0]);281 if (index >= 0) {282 insert = label.slice(index) + inserted;283 deletecount = regexResult[0].length - index;284 output = true;285 }286 }287 }288 }289 }290 if (output) {291 event.preventDefault();292 const text = deletecount ? value.slice(caretposition - deletecount, caretposition) : "";293 if (text) {294 deleteCaret(target, text);...

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flat1.js

Source:flat1.js Github

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...33var ELEMENT_NODE_TYPE = 1;34var DOC_NODE_TYPE = 9;35var DOCUMENT_FRAGMENT_NODE_TYPE = 11;36var instancesByReactRootID = {};37function firstDifferenceIndex(string1, string2) {/* ... */}38/* 从容器获取 React 根元素 */39function getReactRootElementInContainer(container) {/* ... */}40/* 获取元素 ID */41function internalGetID(node) {/* ... */}42function mountComponentIntoNode(wrapperInstance, container, transaction, shouldReuseMarkup, context) {/* ... */}43function batchedMountComponentIntoNode(componentInstance, container, shouldReuseMarkup, context) {/* ... */}44function unmountComponentFromNode(instance, container, safely) {/* ... */}45/* 检查是否存在实例 */ 46function hasNonRootReactChild(container) {/* ... */}47function nodeIsRenderedByOtherInstance(container) {/* ... */}48/* 校验 DOM 元素容器 */49function isValidContainer(node) {/* ... */}50function isReactNode(node) {/* ... */}51/* 从容器获取宿主根元素实例 */...

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showdiff.js

Source:showdiff.js Github

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1import { Formula, ParenthesisGroup, Literal, UnaryOperator, BinaryOperator } from './model/shared/formula.js'2const hl = 'formula-highlight'3function checkDifferences (oldSub, newSub) {4 switch (true) {5 case oldSub instanceof ParenthesisGroup:6 if (!(newSub instanceof ParenthesisGroup)) {7 newSub.style = hl8 } else {9 [oldSub.expression, newSub.expression] = checkDifferences(oldSub.expression, newSub.expression)10 }11 break12 case oldSub instanceof Literal:13 if (!(newSub instanceof Literal)) {14 newSub.style = hl15 }16 if (oldSub.expression !== newSub.expression) {17 newSub.style = hl18 }19 break20 case oldSub instanceof UnaryOperator:21 if (!(newSub instanceof UnaryOperator)) {22 newSub.style = hl23 } else {24 [oldSub.expression, newSub.expression] = checkDifferences(oldSub.expression, newSub.expression)25 }26 break27 case oldSub instanceof BinaryOperator:28 if (!(newSub instanceof BinaryOperator)) {29 newSub.style = hl30 } else if (newSub.operator !== oldSub.operator) {31 newSub.style = hl32 } else {33 // Check binary operator34 const oldSub2 = oldSub.flatten()35 const newSub2 = newSub.flatten()36 let i = 037 while ((i < oldSub2.expressions.length && i < newSub2.expressions.length)) {38 if (oldSub2.expressions[i].printUnicode() !== newSub2.expressions[i].printUnicode()) {39 break40 }41 i++42 }43 const firstDifferenceIndex = i44 i = 045 while ((i < oldSub2.expressions.length && i < newSub2.expressions.length)) {46 if (oldSub2.expressions[oldSub2.expressions.length - 1 - i].printUnicode() !== newSub2.expressions[newSub2.expressions.length - 1 - i].printUnicode()) {47 break48 }49 i++50 }51 const lastDifferenceIndex = newSub2.expressions.length - 1 - i52 if (firstDifferenceIndex === lastDifferenceIndex) {53 const index = firstDifferenceIndex54 const result = checkDifferences(oldSub2.expressions[index], newSub2.expressions[index])55 oldSub2.expressions[index] = result[0]56 newSub2.expressions[index] = result[1]57 }58 if (firstDifferenceIndex <= lastDifferenceIndex) {59 newSub2.style = hl60 newSub2.firstDifferenceIndex = firstDifferenceIndex61 newSub2.lastDifferenceIndex = lastDifferenceIndex62 }63 return [oldSub2, newSub2]64 }65 break66 }67 return [oldSub, newSub]68}69export function showdiff (oldString, newString, options) {70 const oldFormula = new Formula(oldString, options).result71 const newFormula = new Formula(newString, options).result72 const result = checkDifferences(oldFormula, newFormula)73 return result[1]...

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index.js

Source:index.js Github

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1import convertReference from '../ling-ref.js';2import { fileURLToPath } from 'url';3import fs from 'fs';4import path from 'path';5import yaml from 'yaml';6const { readFile } = fs.promises;7const currentDir = path.dirname(fileURLToPath(import.meta.url));8const bibliographyPath = path.join(currentDir, `bibliography.html`);9const referencesPath = path.join(currentDir, `references.yml`);10const contextChars = 50;11void async function test() {12 const yamlReferences = await readFile(referencesPath, `utf8`);13 let bibliography = await readFile(bibliographyPath, `utf8`);14 const references = yaml.parse(yamlReferences);15 bibliography = bibliography16 .replace(/\r\n/gu, `\n`)17 .normalize()18 .trim();19 const citations = references20 .map(convertReference)21 .map(citation => `<li><p>${citation}</p></li>`);22 const referenceList = citations.join(`\n`).normalize();23 const testString = `<ul>\n${referenceList}\n</ul>`;24 const noChange = testString === bibliography;25 if (noChange) {26 console.info(`Test passed!`);27 return process.exit(0);28 }29 const bibliographyChars = Array.from(bibliography);30 const firstDifferenceIndex = Array.from(testString)31 .findIndex((char, i) => bibliographyChars[i] !== char);32 const bibliographyContext = bibliography.slice(33 Math.max(firstDifferenceIndex - contextChars, 0),34 Math.min(firstDifferenceIndex + contextChars, bibliography.length),35 );36 const testStringContext = testString.slice(37 Math.max(firstDifferenceIndex - contextChars, 0),38 Math.min(firstDifferenceIndex + contextChars, testString.length),39 );40 console.info(`Differences found:41 expected: ${bibliographyContext}42 actual: ${testStringContext}43 `);44 process.exit(1);...

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complex.js

Source:complex.js Github

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...4 * that's not common between the two given strings.5 *6 * @return {number} the index of the character where the strings diverge7 */8function firstDifferenceIndex(string1, string2) {9 var minLen = Math.min(string1.length, string2.length);10 for (var i = 0; i < minLen; i++) {11 if (string1.charAt(i) !== string2.charAt(i)) {12 return i;13 }14 }15 return string1.length === string2.length ? -1 : minLen;16}17/***/ (function(module, exports) {18// removed by extract-text-webpack-plugin19module.exports = {"table":"a","key":"e"};20/***/ }),21/* 523 */22/***/ (function(module, exports, __webpack_require__) {...

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Using AI Code Generation

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1const { firstDifferenceIndex } = require('playwright/lib/utils/stackTrace');2const stack1 = new Error().stack;3const stack2 = new Error().stack;4console.log(firstDifferenceIndex(stack1, stack2));5const { getCallerLocation } = require('playwright/lib/utils/stackTrace');6const stack = new Error().stack;7console.log(getCallerLocation(stack));8const { getCallerFile } = require('playwright/lib/utils/stackTrace');9console.log(getCallerFile());10const { getCallerLocation } = require('playwright/lib/utils/stackTrace');11const stack = new Error().stack;12console.log(getCallerLocation(stack));13const { getCallerLocation } = require('playwright/lib

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Using AI Code Generation

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1const { firstDifferenceIndex } = require('@playwright/test/lib/utils/utils');2const { expect } = require('@playwright/test');3const { test, expect } = require('@playwright/test');4test('firstDifferenceIndex', async ({}) => {5 expect(firstDifferenceIndex('abcdef', 'abcde')).toBe(5);6 expect(firstDifferenceIndex('abcdef', 'abcde')).toBe(6);7});

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Using AI Code Generation

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1const { firstDifferenceIndex } = require('playwright/lib/utils/utils');2const { expect } = require('chai');3describe('firstDifferenceIndex', function() {4 it('should return the index of the first difference', function() {5 expect(firstDifferenceIndex('hello', 'hella')).to.equal(4);6 });7});

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Using AI Code Generation

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1const { firstDifferenceIndex } = require('playwright/lib/utils/utils');2const { expect } = require('@playwright/test');3const a = 'Hello';4const b = 'Hella';5const index = firstDifferenceIndex(a, b);6console.log(index);7test('first difference index', async ({ page }) => {8 expect(index).toBe(4);9});

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Using AI Code Generation

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1const { firstDifferenceIndex } = require("playwright");2const { expect } = require("chai");3describe("firstDifferenceIndex", function () {4 it("should return the index of the first difference", function () {5 const a = "hello";6 const b = "hell";7 expect(firstDifferenceIndex(a, b)).to.equal(4);8 });9});10const { firstDifferenceIndex } = require("playwright");11const { expect } = require("chai");12describe("firstDifferenceIndex", function () {13 it("should return the index of the first difference", function () {14 const a = "hello";15 const b = "hell";16 expect(firstDifferenceIndex(a, b)).to.equal(3);17 });18});

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Using AI Code Generation

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1const { firstDifferenceIndex } = require('playwright/lib/internal/inspectorInstrumentation');2const { test } = require('playwright/lib/test');3const { expect } = require('playwright/lib/utils/expect');4test('firstDifferenceIndex', async ({ page }) => {5 const text = await page.innerText('.navbar__inner');6 const expected = 'Hello World';7 const index = firstDifferenceIndex(text, expected);8 expect(index).toBe(0);9 expect(text).toBe(expected);10});11module.exports = {12 use: {13 },14 {15 use: {16 viewport: { width: 1280, height: 720 },17 },18 },19};20{21 "compilerOptions": {22 },23}24{25 "scripts": {26 },27 "devDependencies": {28 }

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Using AI Code Generation

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1const {firstDifferenceIndex} = require('playwright/lib/server/utils');2const s1 = 'abcd';3const s2 = 'abc';4const index = firstDifferenceIndex(s1, s2);5console.log(index);6const {firstLineBreakIndex} = require('playwright/lib/server/utils');7efgh';8const index = firstLineBreakIndex(s);9console.log(index);10const {firstNonWhitespaceIndex} = require('playwright/lib/server/utils');11efgh';12const index = firstNonWhitespaceIndex(s);13console.log(index);14const {

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Using AI Code Generation

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1const { firstDifferenceIndex } = require('playwright/lib/utils/utils');2const firstDifferenceIndex = firstDifferenceIndex('Hello World', 'Hello World');3console.log(firstDifferenceIndex);4const { firstDifferenceIndex } = require('playwright/lib/utils/utils');5const firstDifferenceIndex = firstDifferenceIndex('Hello World', 'Hello Playwright');6console.log(firstDifferenceIndex);7const { firstDifferenceIndex } = require('playwright/lib/utils/utils');8const firstDifferenceIndex = firstDifferenceIndex('Hello Playwright', 'Hello World');9console.log(firstDifferenceIndex);10const { firstDifferenceIndex } = require('playwright/lib/utils/utils');11const firstDifferenceIndex = firstDifferenceIndex('Hello Playwright', 'Hello Playwright');12console.log(firstDifferenceIndex);13const { firstDifferenceIndex } = require('playwright/lib/utils/utils');14const firstDifferenceIndex = firstDifferenceIndex('Hello Playwright', 'Hello Playwright');15console.log(firstDifferenceIndex);16const { firstDifferenceIndex } = require('playwright/lib/utils/utils');17const firstDifferenceIndex = firstDifferenceIndex('Hello Playwright', 'Hello Playwright');18console.log(firstDifferenceIndex);19const { firstDifferenceIndex } = require('playwright/lib/utils/utils');20const firstDifferenceIndex = firstDifferenceIndex('Hello Playwright', 'Hello Playwright');21console.log(firstDifferenceIndex);22const { firstDifferenceIndex } = require('playwright/lib/utils/utils');23const firstDifferenceIndex = firstDifferenceIndex('Hello Playwright', 'Hello Playwright');24console.log(firstDifferenceIndex);25const { firstDifferenceIndex } = require('playwright/lib/utils/utils');26const firstDifferenceIndex = firstDifferenceIndex('Hello Playwright', '

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Using AI Code Generation

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1const { firstDifferenceIndex } = require('playwright/lib/utils/utils');2const assert = require('assert');3describe('Test', () => {4 it('test', () => {5 const a = 'Hello';6 const b = 'Hello World';7 assert.equal(firstDifferenceIndex(a, b), a.length);8 });9});10{11 "scripts": {12 },13 "dependencies": {14 }15}16 at Context.<anonymous> (test.js:11:16)17 at processImmediate (internal/timers.js:456:21) {18}19const { firstDifferenceIndex } = require('playwright/lib/utils/utils');20const { firstDifferenceIndex } = require('playwright/lib/utils/utils');21const { firstDifferenceIndex } = require('playwright/lib/utils/utils');22const { first

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Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

  1. What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
  2. How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
  3. Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
  4. What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
  5. Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
  6. Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
  7. Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
  8. Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
  9. Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
  10. Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
  11. Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
  12. Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.

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