How to use parseForExpression method in Playwright Internal
Best JavaScript code snippet using playwright-internal
x-for.js
Source:x-for.js 
...6import { mutateDom } from '../mutation'7import { flushJobs } from '../scheduler'8import { warn } from '../utils/warn'9directive('for', (el, { expression }, { effect, cleanup }) => {10 let iteratorNames = parseForExpression(expression)11 let evaluateItems = evaluateLater(el, iteratorNames.items)12 let evaluateKey = evaluateLater(el,13 // the x-bind:key expression is stored for our use instead of evaluated.14 el._x_keyExpression || 'index'15 )16 el._x_prevKeys = []17 el._x_lookup = {}18 effect(() => loop(el, iteratorNames, evaluateItems, evaluateKey))19 cleanup(() => {20 Object.values(el._x_lookup).forEach(el => el.remove())21 delete el._x_prevKeys22 delete el._x_lookup23 })24})25let shouldFastRender = true26function loop(el, iteratorNames, evaluateItems, evaluateKey) {27 let isObject = i => typeof i === 'object' && ! Array.isArray(i)28 let templateEl = el29 evaluateItems(items => {30 // Prepare yourself. There's a lot going on here. Take heart,31 // every bit of complexity in this function was added for32 // the purpose of making Alpine fast with large datas.33 // Support number literals. Ex: x-for="i in 100"34 if (isNumeric(items) && items >= 0) {35 items = Array.from(Array(items).keys(), i => i + 1)36 }37 if (items === undefined) items = []38 let lookup = el._x_lookup39 let prevKeys = el._x_prevKeys40 let scopes = []41 let keys = []42 // In order to preserve DOM elements (move instead of replace)43 // we need to generate all the keys for every iteration up44 // front. These will be our source of truth for diffing.45 if (isObject(items)) {46 items = Object.entries(items).map(([key, value]) => {47 let scope = getIterationScopeVariables(iteratorNames, value, key, items)48 evaluateKey(value => keys.push(value), { scope: { index: key, ...scope} })49 scopes.push(scope)50 })51 } else {52 for (let i = 0; i < items.length; i++) {53 let scope = getIterationScopeVariables(iteratorNames, items[i], i, items)54 evaluateKey(value => keys.push(value), { scope: { index: i, ...scope} })55 scopes.push(scope)56 }57 }58 // Rather than making DOM manipulations inside one large loop, we'll59 // instead track which mutations need to be made in the following60 // arrays. After we're finished, we can batch them at the end.61 let adds = []62 let moves = []63 let removes = []64 let sames = []65 // First, we track elements that will need to be removed.66 for (let i = 0; i < prevKeys.length; i++) {67 let key = prevKeys[i]68 if (keys.indexOf(key) === -1) removes.push(key)69 }70 // Notice we're mutating prevKeys as we go. This makes it71 // so that we can efficiently make incremental comparisons.72 prevKeys = prevKeys.filter(key => ! removes.includes(key))73 let lastKey = 'template'74 // This is the important part of the diffing algo. Identifying75 // which keys (future DOM elements) are new, which ones have76 // or haven't moved (noting where they moved to / from).77 for (let i = 0; i < keys.length; i++) {78 let key = keys[i]79 let prevIndex = prevKeys.indexOf(key)80 if (prevIndex === -1) {81 // New key found.82 prevKeys.splice(i, 0, key)83 adds.push([lastKey, i])84 } else if (prevIndex !== i) {85 // A key has moved.86 let keyInSpot = prevKeys.splice(i, 1)[0]87 let keyForSpot = prevKeys.splice(prevIndex - 1, 1)[0]88 prevKeys.splice(i, 0, keyForSpot)89 prevKeys.splice(prevIndex, 0, keyInSpot)90 moves.push([keyInSpot, keyForSpot])91 } else {92 // This key hasn't moved, but we'll still keep track93 // so that we can refresh it later on.94 sames.push(key)95 }96 lastKey = key97 }98 // Now that we've done the diffing work, we can apply the mutations99 // in batches for both separating types work and optimizing100 // for browser performance.101 // We'll remove all the nodes that need to be removed,102 // letting the mutation observer pick them up and103 // clean up any side effects they had.104 for (let i = 0; i < removes.length; i++) {105 let key = removes[i]106 lookup[key].remove()107 lookup[key] = null108 delete lookup[key]109 }110 // Here we'll move elements around, skipping111 // mutation observer triggers by using "mutateDom".112 for (let i = 0; i < moves.length; i++) {113 let [keyInSpot, keyForSpot] = moves[i]114 let elInSpot = lookup[keyInSpot]115 let elForSpot = lookup[keyForSpot]116 let marker = document.createElement('div')117 mutateDom(() => {118 elForSpot.after(marker)119 elInSpot.after(elForSpot)120 marker.before(elInSpot)121 marker.remove()122 })123 refreshScope(elForSpot, scopes[keys.indexOf(keyForSpot)])124 }125 // We can now create and add new elements.126 for (let i = 0; i < adds.length; i++) {127 let [lastKey, index] = adds[i]128 let lastEl = (lastKey === 'template') ? templateEl : lookup[lastKey]129 let scope = scopes[index]130 let key = keys[index]131 let clone = document.importNode(templateEl.content, true).firstElementChild132 addScopeToNode(clone, reactive(scope), templateEl)133 mutateDom(() => {134 lastEl.after(clone)135 initTree(clone)136 })137 if (typeof key === 'object') {138 warn('x-for key cannot be an object, it must be a string or an integer', templateEl)139 }140 lookup[key] = clone141 }142 // If an element hasn't changed, we still want to "refresh" the143 // data it depends on in case the data has changed in an144 // "unobservable" way.145 for (let i = 0; i < sames.length; i++) {146 refreshScope(lookup[sames[i]], scopes[keys.indexOf(sames[i])])147 }148 // Now we'll log the keys (and the order they're in) for comparing149 // against next time.150 templateEl._x_prevKeys = keys151 })152}153// This was taken from VueJS 2.* core. Thanks Vue!154function parseForExpression(expression) {155 let forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/156 let stripParensRE = /^\s*\(|\)\s*$/g157 let forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/158 let inMatch = expression.match(forAliasRE)159 if (! inMatch) return160 let res = {}161 res.items = inMatch[2].trim()162 let item = inMatch[1].replace(stripParensRE, '').trim()163 let iteratorMatch = item.match(forIteratorRE)164 if (iteratorMatch) {165 res.item = item.replace(forIteratorRE, '').trim()166 res.index = iteratorMatch[1].trim()167 if (iteratorMatch[2]) {168 res.collection = iteratorMatch[2].trim()...
index.js
Source:index.js
...200 }201 var postfix, prefix;202 var expression = js.replace(/^\w+\s*/, '');203 if (js.indexOf('each') === 0) {204 var o = parseForExpression(expression)205 if (!o.attr) return new Error("attribute not found for " + expression)206 o.as = o.as || '__val'207 var args = o.as + (o.index ? ',' + o.index : '')208 prefix = o.attr + '.forEach(function(' + args + '){';209 closes.push('})')210 } else if (js.indexOf('if') === 0) {211 prefix = 'if (' + expression + '){';212 closes.push('}')213 } else if (js.indexOf('elif') === 0) {214 prefix = '} else if (' + expression + '){';215 } else if (js.indexOf('else') === 0) {216 prefix = '} else {';217 }218 return prefix219}220// posts as post, i221function parseForExpression(str) {222 var parts = str.split(/,\s*/)223 var index = parts[1]224 parts = parts[0].split(/\s+as\s+/)225 return {226 index: index,227 attr: parts[0],228 as: parts[1]229 }230}231function parseFilters(js) {232 if (!/\s\|\s/.test(js)) return js233 var arr = js.split(/\s*\|\s*/)234 var res = arr[0]235 for (var i = 1; i < arr.length; i++) {...
vFor.js
Source:vFor.js
...11 if (!dir.exp) {12 context.onError(errors_1.createCompilerError(37, dir.loc));13 return;14 }15 var parseResult = parseForExpression(dir.exp, context);16 if (!parseResult) {17 context.onError(errors_1.createCompilerError(38, dir.loc));18 return;19 }20 var helper = context.helper, addIdentifiers = context.addIdentifiers, removeIdentifiers = context.removeIdentifiers, scopes = context.scopes;21 var source = parseResult.source, value = parseResult.value, key = parseResult.key, index = parseResult.index;22 var renderExp = ast_1.createCallExpression(helper(runtimeHelpers_1.RENDER_LIST), [source]);23 var keyProp = utils_1.findProp(node, "key");24 var fragmentFlag = keyProp25 ? shared_1.PatchFlags.KEYED_FRAGMENT26 : shared_1.PatchFlags.UNKEYED_FRAGMENT;27 var codegenNode = ast_1.createSequenceExpression([28 ast_1.createCallExpression(helper(runtimeHelpers_1.OPEN_BLOCK), ["false"]),29 ast_1.createCallExpression(helper(runtimeHelpers_1.CREATE_BLOCK), [30 helper(runtimeHelpers_1.FRAGMENT),31 "null",32 renderExp,33 fragmentFlag + (__DEV__ ? " /* " + shared_1.PatchFlagNames[fragmentFlag] + " */" : "")34 ])35 ]);36 context.replaceNode({37 type: 11,38 loc: dir.loc,39 source: source,40 valueAlias: value,41 keyAlias: key,42 objectIndexAlias: index,43 children: node.tagType === 3 ? node.children : [node],44 codegenNode: codegenNode45 });46 scopes.vFor++;47 if (!__BROWSER__ && context.prefixIdentifiers) {48 value && addIdentifiers(value);49 key && addIdentifiers(key);50 index && addIdentifiers(index);51 }52 return function () {53 scopes.vFor--;54 if (!__BROWSER__ && context.prefixIdentifiers) {55 value && removeIdentifiers(value);56 key && removeIdentifiers(key);57 index && removeIdentifiers(index);58 }59 var childBlock;60 var isTemplate = utils_1.isTemplateNode(node);61 var slotOutlet = utils_1.isSlotOutlet(node)62 ? node63 : isTemplate &&64 node.children.length === 1 &&65 utils_1.isSlotOutlet(node.children[0])66 ? node.children[0]67 : null;68 var keyProperty = keyProp69 ? ast_1.createObjectProperty("key", keyProp.type === 670 ? ast_1.createSimpleExpression(keyProp.value.content, true)71 : keyProp.exp)72 : null;73 if (slotOutlet) {74 childBlock = slotOutlet.codegenNode;75 if (isTemplate && keyProperty) {76 utils_1.injectProp(childBlock, keyProperty, context);77 }78 }79 else if (isTemplate) {80 childBlock = utils_1.createBlockExpression(ast_1.createCallExpression(helper(runtimeHelpers_1.CREATE_BLOCK), [81 helper(runtimeHelpers_1.FRAGMENT),82 keyProperty ? ast_1.createObjectExpression([keyProperty]) : "null",83 node.children84 ]), context);85 }86 else {87 var codegenNode_1 = node.codegenNode;88 if (codegenNode_1.callee === runtimeHelpers_1.WITH_DIRECTIVES) {89 codegenNode_1.arguments[0].callee = helper(runtimeHelpers_1.CREATE_BLOCK);90 }91 else {92 codegenNode_1.callee = helper(runtimeHelpers_1.CREATE_BLOCK);93 }94 childBlock = utils_1.createBlockExpression(codegenNode_1, context);95 }96 renderExp.arguments.push(ast_1.createFunctionExpression(createForLoopParams(parseResult), childBlock, true));97 };98});99var forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;100var forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;101var stripParensRE = /^\(|\)$/g;102function parseForExpression(input, context) {103 var loc = input.loc;104 var exp = input.content;105 var inMatch = exp.match(forAliasRE);106 if (!inMatch)107 return;108 var LHS = inMatch[1], RHS = inMatch[2];109 var result = {110 source: createAliasExpression(loc, RHS.trim(), exp.indexOf(RHS, LHS.length)),111 value: undefined,112 key: undefined,113 index: undefined114 };115 if (!__BROWSER__ && context.prefixIdentifiers) {116 result.source = transformExpression_1.processExpression(result.source, context);...
browser.js
Source:browser.js
...177 }178 var prefix;179 var expression = js.replace(/^\w+\s*/, '');180 if (js.indexOf('each') === 0) {181 var o = parseForExpression(expression)182 if (!o.attr) return new Error("attribute not found for " + expression)183 o.as = o.as || '__val'184 var args = o.as + (o.index ? ',' + o.index : '')185 prefix = o.attr + '.forEach(function(' + args + '){';186 closes.push('})')187 } else if (js.indexOf('if') === 0) {188 prefix = 'if (' + expression + '){';189 closes.push('}')190 } else if (js.indexOf('elif') === 0) {191 prefix = '} else if (' + expression + '){';192 } else if (js.indexOf('else') === 0) {193 prefix = '} else {';194 }195 return prefix196}197// posts as post, i198function parseForExpression(str) {199 var parts = str.split(/,\s*/)200 var index = parts[1]201 parts = parts[0].split(/\s+as\s+/)202 return {203 index: index,204 attr: parts[0],205 as: parts[1]206 }207}208function parseFilters(js) {209 if (!/\s\|\s/.test(js)) return js210 var arr = js.split(/\s*\|\s*/)211 var res = arr[0]212 for (var i = 1; i < arr.length; i++) {...
StringUtils.js
Source:StringUtils.js
1/**2 * Convert a string from kebab-case to camelCase.3 * @param {String} text String to modify.4 * @returns {String} Converted string.5 */6export const kebabToCamel = (text) => {7 return text.replace(/-(\w)/g, (match, character) => character.toUpperCase())8}9/**10 * Parse list of modifiers to an object.11 * - [ 'hello', 'there-100', 'general-kenobi' ]12 * -> { 'hello': true, 'there': 100, 'general': 'kenobi' }13 * @param {Array<String>} modifiers List of modifiers to parse.14 * @returns {Object} Parsed modifiers.15 */16export const parseAttributeModifiers = (modifiers) => {17 const result = {}18 for (const modifier of modifiers) {19 // Get index of hyphen.20 const hyphenIndex = modifier.indexOf('-')21 // If no hyphen then set the modifiers to true.22 if (hyphenIndex < 0) {23 result[modifier] = true24 continue25 }26 // If it starts with hyphen then set the modifier to false.27 if (hyphenIndex === 0) {28 result[modifier.substring(1)] = false29 continue30 }31 // If the hyphen is somewhere in the modifier then assume it is used as a split character.32 const key = modifier.substring(0, hyphenIndex)33 let value = modifier.substring(hyphenIndex + 1)34 let tmpValue = value35 // Try to remove time suffixes.36 let type37 if (value.endsWith('ms')) {38 tmpValue = value.substring(-2)39 } else if (value.endsWith('s')) {40 type = 's'41 tmpValue = value.substring(-1)42 } else if (value.endsWith('m')) {43 type = 'm'44 tmpValue = value.substring(-1)45 } else if (value.endsWith('h')) {46 type = 'h'47 tmpValue = value.substring(-1)48 }49 // Try to parse the value as a number.50 tmpValue = Number.parseInt(tmpValue)51 if (!isNaN(tmpValue)) {52 value = tmpValue53 // Convert to milliseconds if given in a different format.54 switch (type) {55 case 'h':56 value *= 6057 case 'm':58 value *= 6059 case 's':60 value *= 100061 break62 }63 }64 // Store modifier data.65 result[key] = value66 }67 return result68}69/**70 * Parse attribute name to list of segments.71 * Valid formats are:72 * - "d-directive"73 * -> [ 'directive', null, null, null ]74 * - "d-directive:key"75 * -> [ 'directive', 'key', 'key', null ]76 * - "d-directive:key-name"77 * -> [ 'directive', 'key-name', 'keyName', null ]78 * - "d-directive:key-name.modifiers"79 * -> [ 'directive', 'key-name', 'keyName', [ 'modifiers' ] ]80 * - "d-directive.modifiers.multiple"81 * -> [ 'directive', null, null, [ 'modifiers', 'multiple' ] ]82 * @param {String} name Name to parse.83 * @returns {Array<String>} list of segments.84 */85export const parseAttributeName = (prefix, name) => {86 // Match with expression.87 name = name.match(new RegExp('^' + prefix + '-([a-z][0-9a-z-]{1,}):?([a-z][0-9a-z-]*)?(\\..*]*)?$', 'i'))88 if (!name) {89 return90 }91 // Deconstruct match.92 let [full, directive, keyRaw, modifiers] = name // eslint-disable-line no-unused-vars93 // If no key provided set it to null instead of empty.94 keyRaw = keyRaw !== '' ? keyRaw : null95 const key = keyRaw ? kebabToCamel(keyRaw) : null96 // Ensure modifiers is and array.97 modifiers = modifiers ? modifiers.substring(1).split('.') : []98 // Return result a single array.99 return [directive, keyRaw, key, modifiers]100}101/**102 * Parses for expression. Valid expression formats are:103 * - "index of 4"104 * -> { iterable: "4", variables: [ "index" ] }105 * - "item of items"106 * -> { iterable: "items", variables: [ "item" ] }107 * - "key in object"108 * -> { iterable: "object", variables: [ "key" ] }109 * - "(key, value) in object"110 * -> { iterable: "object", variables: [ "key", "value" ] }111 * - "(key, value, index) in object"112 * -> { iterable: "object", variables: [ "key", "value", "index" ] }113 * - "(key, , index) in object"114 * -> { iterable: "object", variables: [ "key", undefined, "index" ] }115 */116export const parseForExpression = (expression) => {117 // Split variables from items expression.118 const match = expression.match(/^([$_a-z0-9,(){}\s]{1,}?)\s+(?:in|of)\s+([\s\S]{1,})$/i)119 if (!match) {120 return121 }122 // Remove parenthesis.123 let variables = match[1].replace(/^[\s({]*|[)}\s]*$/g, '')124 // Parse for variables.125 variables = variables.match(/^([$_a-z0-9]{1,})?(?:,\s+?)?([$_a-z0-9]{1,})?(?:,\s+)?([$_a-z0-9]{1,})?$/i)126 if (!variables) {127 return128 }129 variables.shift()130 return {131 iterable: match[2].trim(),132 variables: [...variables], // Convert it to an array instead of a regular expression match.133 }134}135/**136 * Parse selector to an attributes object.137 * @param {String} selector Selector to parse.138 * @returns {Object} Attributes. Do note the class property is a list of strings not a single string.139 */140export const parseSelector = (selector) => {141 // Convert to array.142 if (typeof (selector) === 'string') {143 selector = selector.split(/(?=\.)|(?=#)|(?=\[)/)144 }145 if (!Array.isArray(selector)) {146 console.error('Doars: parseSelector expects Array of string or a single string.')147 return148 }149 const attributes = {}150 for (let selectorSegment of selector) {151 // Trim spaces.152 selectorSegment = selectorSegment.trim()153 // Base what to do of the leading character.154 switch (selectorSegment[0]) {155 case '#':156 // Remove leading character and store as id.157 attributes.id = selectorSegment.substring(1)158 break159 case '.':160 // Remove leading character.161 selectorSegment = selectorSegment.substring(1)162 // Add to classlist.163 if (!attributes.class) {164 attributes.class = []165 }166 if (!attributes.class.includes(selectorSegment)) {167 attributes.class.push(selectorSegment)168 }169 break170 case '[':171 // Remove brackets and split key from value.172 const [full, key, value] = selectorSegment.match(/^(?:\[)?([-$_.a-z0-9]{1,})(?:[$*^])?(?:=)?([\s\S]{0,})(?:\])$/i) // eslint-disable-line no-unused-vars173 // Store attribute value in results.174 attributes[key] = value175 break176 }177 }178 return attributes179}180export default {181 kebabToCamel: kebabToCamel,182 parseAttributeModifiers: parseAttributeModifiers,183 parseAttributeName: parseAttributeName,184 parseForExpression: parseForExpression,185 parseSelector: parseSelector,...
for.js
Source:for.js
1import { transitionIn, transitionOut, getXAttrs, warnIfMalformedTemplate, isNumeric } from '../utils'2export function handleForDirective(component, templateEl, expression, initialUpdate, extraVars) {3 warnIfMalformedTemplate(templateEl, 'x-for')4 let iteratorNames = typeof expression === 'function'5 ? parseForExpression(component.evaluateReturnExpression(templateEl, expression))6 : parseForExpression(expression)7 let items = evaluateItemsAndReturnEmptyIfXIfIsPresentAndFalseOnElement(component, templateEl, iteratorNames, extraVars)8 // As we walk the array, we'll also walk the DOM (updating/creating as we go).9 let currentEl = templateEl10 items.forEach((item, index) => {11 let iterationScopeVariables = getIterationScopeVariables(iteratorNames, item, index, items, extraVars())12 let currentKey = generateKeyForIteration(component, templateEl, index, iterationScopeVariables)13 let nextEl = lookAheadForMatchingKeyedElementAndMoveItIfFound(currentEl.nextElementSibling, currentKey)14 // If we haven't found a matching key, insert the element at the current position.15 if (! nextEl) {16 nextEl = addElementInLoopAfterCurrentEl(templateEl, currentEl)17 // And transition it in if it's not the first page load.18 transitionIn(nextEl, () => {}, () => {}, component, initialUpdate)19 nextEl.__x_for = iterationScopeVariables20 component.initializeElements(nextEl, () => nextEl.__x_for)21 // Otherwise update the element we found.22 } else {23 // Temporarily remove the key indicator to allow the normal "updateElements" to work.24 delete nextEl.__x_for_key25 nextEl.__x_for = iterationScopeVariables26 component.updateElements(nextEl, () => nextEl.__x_for)27 }28 currentEl = nextEl29 currentEl.__x_for_key = currentKey30 })31 removeAnyLeftOverElementsFromPreviousUpdate(currentEl, component)32}33// This was taken from VueJS 2.* core. Thanks Vue!34function parseForExpression(expression) {35 let forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/36 let stripParensRE = /^\(|\)$/g37 let forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/38 let inMatch = String(expression).match(forAliasRE)39 if (! inMatch) return40 let res = {}41 res.items = inMatch[2].trim()42 let item = inMatch[1].trim().replace(stripParensRE, '')43 let iteratorMatch = item.match(forIteratorRE)44 if (iteratorMatch) {45 res.item = item.replace(forIteratorRE, '').trim()46 res.index = iteratorMatch[1].trim()47 if (iteratorMatch[2]) {48 res.collection = iteratorMatch[2].trim()...
systemDirectives.js
Source:systemDirectives.js
...97function parseDir(directive) {98 if (!directive) return {};99 let { name, attrValue } = directive;100 if (name === 'for') {101 return parseForExpression(attrValue);102 }103 return { value: attrValue };104}105function modelArgEq(n1, n2) {106 return n1 === n2 || ( !n1 && n2 === 'modelValue' ) || ( n1 === 'modelValue' && !n2 );107}108export function createSimpleObj(dir) {109 let { value, index, source } = dir.data;110 let name = `v-${ dir.name }`;111 if (name === 'v-for') {112 value = `(${ value }${ index && ` , ${ index }` }) in ${ source }`;113 }114 if (dir.arg) {115 name += ':' + dir.arg;116 }117 return {118 name,119 value,120 };121}122export function getDirectives(models, props) {123 let dirs =124 models &&125 models.map((model) => {126 let prop = props.find((dir) => dir.name == 'model' && modelArgEq(dir.getArgContent(), model));127 return Object.assign(128 {129 arg: model,130 enable: prop != null,131 data: parseDir(prop),132 },133 modelSchema,134 );135 });136 dirs = dirs || [];137 return dirs.concat(138 schemas.map((schema) => {139 let prop = props.find((dir) => dir.name == schema.name);140 return Object.assign({ enable: prop != null, data: parseDir(prop) }, schema);141 }),142 );143}144const forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;145const forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;146const stripParensRE = /^\(|\)$/g;147function parseForExpression(exp) {148 const inMatch = exp.match(forAliasRE);149 if (!inMatch) return;150 const [, LHS, RHS] = inMatch;151 const result = {152 source: RHS.trim(),153 value: undefined,154 key: undefined,155 index: undefined,156 };157 let valueContent = LHS.trim().replace(stripParensRE, '').trim();158 const iteratorMatch = valueContent.match(forIteratorRE);159 if (iteratorMatch) {160 valueContent = valueContent.replace(forIteratorRE, '').trim();161 const keyContent = iteratorMatch[1].trim();...
alpine-emerge.esm.js
Source:alpine-emerge.esm.js
...16 }17 });18 });19 } else if (cid && value === "for") {20 const items = parseForExpression(expression).items;21 const evaluator = evaluateLater(items);22 effect(() => {23 evaluator((evaluated) => {24 if (typeof evaluated === "number" && evaluated > 0 || typeof evaluated === "object" && evaluated.length > 0) {25 resolve();26 }27 });28 });29 } else {30 resolve();31 }32 async function resolve() {33 if (cid) {34 await _D.emerge(cid, root, extra ? JSON.parse(extra) : void 0);35 }36 el.removeAttribute(`x-emerge:${value}`);37 setTimeout(() => el.setAttribute(`x-${value}`, expression));38 }39 });40 function parseForExpression(expression) {41 let forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;42 let stripParensRE = /^\s*\(|\)\s*$/g;43 let forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;44 let inMatch = expression.match(forAliasRE);45 if (!inMatch)46 return;47 let res = {};48 res.items = inMatch[2].trim();49 let item = inMatch[1].replace(stripParensRE, "").trim();50 let iteratorMatch = item.match(forIteratorRE);51 if (iteratorMatch) {52 res.item = item.replace(forIteratorRE, "").trim();53 res.index = iteratorMatch[1].trim();54 if (iteratorMatch[2]) {...
Using AI Code Generation
1const playwright = require('playwright');2const { parseForExpression } = require('playwright/lib/utils/selectorParser');3(async () => {4 const browser = await playwright['chromium'].launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const handle = await page.$(parseForExpression('css=div'));8 await handle.screenshot({ path: 'example.png' });9 await browser.close();10})();11const playwright = require('playwright');12const { parseForExpression } = require('playwright/lib/utils/selectorParser');13(async () => {14 const browser = await playwright['chromium'].launch();15 const context = await browser.newContext();16 const page = await context.newPage();17 await handle.screenshot({ path: 'example.png' });18 await browser.close();19})();20const playwright = require('playwright');21const { parseForExpression } = require('playwright/lib/utils/selectorParser');22(async () => {23 const browser = await playwright['chromium'].launch();24 const context = await browser.newContext();25 const page = await context.newPage();26 const handle = await page.$(parseForExpression('text=Playwright'));27 await handle.screenshot({ path: 'example.png' });28 await browser.close();29})();30const playwright = require('playwright');31const { parseForExpression } = require('playwright/lib/utils/selectorParser');32(async () => {33 const browser = await playwright['chromium'].launch();34 const context = await browser.newContext();35 const page = await context.newPage();36 const handle = await page.$(parseForExpression('text=Playwright', { exact: true }));37 await handle.screenshot({ path: 'example.png' });38 await browser.close();39})();
Using AI Code Generation
1const { parseForExpression } = require('playwright/lib/utils/selectorParser');2const { parseSelector } = require('playwright/lib/utils/selectorParser');3const { parseSelectorList } = require('playwright/lib/utils/selectorParser');4const { parseSelectorListAsArray } = require('playwright/lib/utils/selectorParser');5const { parseSelectorListAsArrayWithNesting } = require('playwright/lib/utils/selectorParser');6const { parseSelectorListWithNesting } = require('playwright/lib/utils/selectorParser');7const { parseSelectorWithNesting } = require('playwright/lib/utils/selectorParser');8const { parseText } = require('playwright/lib/utils/selectorParser');9const { parseTextAsArray } = require('playwright/lib/utils/selectorParser');10const { parseTextAsArrayWithNesting } = require('playwright/lib/utils/selectorParser');11const { parseTextWithNesting } = require('playwright/lib/utils/selectorParser');12const selector = "css=div#myDiv > span.mySpan";13const parsedSelector = parseSelector(selector);14console.log("parsedSelector: ", parsedSelector);15const selectorList = "css=div#myDiv > span.mySpan,css=div#myDiv > span.mySpan2";16const parsedSelectorList = parseSelectorList(selectorList);17console.log("parsedSelectorList: ", parsedSelectorList);18const selectorListWithNesting = "css=div#myDiv > span.mySpan,css=div#myDiv > span.mySpan2,css=div#myDiv > span.mySpan3,css=div#myDiv > span.mySpan4";19const parsedSelectorListWithNesting = parseSelectorListWithNesting(selectorListWithNesting);20console.log("parsedSelectorListWithNesting: ", parsedSelectorListWithNesting);21const selectorListAsArray = "css=div#myDiv > span.mySpan,css=div#myDiv > span.mySpan2";22const parsedSelectorListAsArray = parseSelectorListAsArray(selectorListAsArray);23console.log("parsedSelectorListAsArray: ", parsedSelectorListAsArray);
Using AI Code Generation
1const { parseForExpression } = require('playwright/lib/server/frames');2const parsedExpression = parseForExpression('element.textContent');3console.log(parsedExpression);4const { parseForExpression } = require('playwright/lib/server/frames');5const parsedExpression = parseForExpression('element.textContent');6console.log(parsedExpression);7const { parseForExpression } = require('playwright/lib/server/frames');8const parsedExpression = parseForExpression('element.textContent');9console.log(parsedExpression);10const { parseForExpression } = require('playwright/lib/server/frames');11const parsedExpression = parseForExpression('element.textContent');12console.log(parsedExpression);13const { parseForExpression } = require('playwright/lib/server/frames');14const parsedExpression = parseForExpression('element.textContent');15console.log(parsedExpression);16const { parseForExpression } = require('playwright/lib/server/frames');17const parsedExpression = parseForExpression('element.textContent');18console.log(parsedExpression);19const { parseForExpression } = require('playwright/lib/server/frames');20const parsedExpression = parseForExpression('element.textContent');21console.log(parsedExpression);22const { parseForExpression } = require('playwright/lib/server/frames');23const parsedExpression = parseForExpression('element.textContent');24console.log(parsedExpression);25const { parseForExpression } = require('playwright/lib/server/frames');26const parsedExpression = parseForExpression('element.textContent');27console.log(parsedExpression);28const { parseForExpression } = require('playwright/lib/server/frames');29const parsedExpression = parseForExpression('element.textContent');30console.log(parsedExpression);31const { parseForExpression } = require('playwright/lib/server/frames');32const parsedExpression = parseForExpression('element.textContent');33console.log(parsedExpression);
Using AI Code Generation
1const { parseForExpression } = require('playwright/lib/server/frames');2const { parse } = require('playwright/lib/server/common/utils');3const { parseExpression } = require('playwright/lib/server/common/javascript');4const input = "document.querySelector('div')";5const parsed = parseForExpression(input);6const expression = parsed.expression;7const isFunction = parsed.isFunction;8const parsedExpression = parseExpression(expression);9const parsedFunction = parse(`async function() { ${expression} }`);10const value = await page.evaluate(parsedFunction, ...parsedExpression.args);11console.log(value);12await page.type(input, value);13await page.click('button');14const value = await page.evaluate(parsedFunction, ...parsedExpression.args);15console.log(value);16await page.type(input, value);17await page.click('button');18const value = await page.evaluate(parsedFunction, ...parsedExpression.args);19console.log(value);20await page.type(input, value);21await page.click('button');22const value = await page.evaluate(parsedFunction, ...parsedExpression.args);23console.log(value);24await page.type(input, value);25await page.click('button');26const value = await page.evaluate(parsedFunction, ...parsedExpression.args);27console.log(value);28await page.type(input, value);29await page.click('button');
Using AI Code Generation
1const { parseForExpression } = require('playwright-core/lib/utils/selectorParser');2const selector = parseForExpression('text=Click me', 'css');3const { parseForExpression } = require('playwright-core/lib/utils/selectorParser');4const { chromium } = require('playwright-core');5const selector = parseForExpression('text=Click me', 'css');6(async () => {7 const browser = await chromium.launch({ headless: false });8 const context = await browser.newContext();9 const page = await context.newPage();10 await page.click(selector);11 await browser.close();12})();13In the above code, we have imported the
Using AI Code Generation
1const { parseForExpression } = require('playwright-core/lib/server/common/parseForExpression');2const expression = parseForExpression('myVar');3console.log(expression);4const { parseForExpression } = require('playwright-core/lib/server/common/parseForExpression');5const expression = parseForExpression('myVar');6console.log(expression);7const { parseForExpression } = require('playwright-core/lib/server/common/parseForExpression');8const expression = parseForExpression('myVar');9console.log(expression);10const { parseForExpression } = require('playwright-core/lib/server/common/parseForExpression');11const expression = parseForExpression('myVar');12console.log(expression);13const { parseForExpression } = require('playwright-core/lib/server/common/parseForExpression');14const expression = parseForExpression('myVar');15console.log(expression);16const { parseForExpression } = require('playwright-core/lib/server/common/parseForExpression');17const expression = parseForExpression('myVar');18console.log(expression);19const { parseForExpression } = require('playwright-core/lib/server/common/parseForExpression');20const expression = parseForExpression('myVar');21console.log(expression);22const { parseForExpression } = require('playwright-core/lib/server/common/parseForExpression');23const expression = parseForExpression('myVar');24console.log(expression);25const { parseForExpression } = require('playwright-core/lib/server/common/parseForExpression');26const expression = parseForExpression('myVar');27console.log(expression);28const { parseForExpression } = require('playwright
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:
- 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.
- 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.
- 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.
- 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.
- Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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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