How to use extractComments method in Playwright Internal

Best JavaScript code snippet using playwright-internal

utils.js

Source:utils.js

1"use strict";2/** @typedef {import("source-map").RawSourceMap} RawSourceMap */3/** @typedef {import("terser").FormatOptions} TerserFormatOptions */4/** @typedef {import("terser").MinifyOptions} TerserOptions */5/** @typedef {import("terser").ECMA} TerserECMA */6/** @typedef {import("./index.js").ExtractCommentsOptions} ExtractCommentsOptions */7/** @typedef {import("./index.js").ExtractCommentsFunction} ExtractCommentsFunction */8/** @typedef {import("./index.js").ExtractCommentsCondition} ExtractCommentsCondition */9/** @typedef {import("./index.js").Input} Input */10/** @typedef {import("./index.js").MinimizedResult} MinimizedResult */11/** @typedef {import("./index.js").PredefinedOptions} PredefinedOptions */12/** @typedef {import("./index.js").CustomOptions} CustomOptions */13/**14 * @typedef {Array<string>} ExtractedComments15 */16const notSettled = Symbol(`not-settled`);17/**18 * @template T19 * @typedef {() => Promise<T>} Task20 */21/**22 * Run tasks with limited concurency.23 * @template T24 * @param {number} limit - Limit of tasks that run at once.25 * @param {Task<T>[]} tasks - List of tasks to run.26 * @returns {Promise<T[]>} A promise that fulfills to an array of the results27 */28function throttleAll(limit, tasks) {29  if (!Number.isInteger(limit) || limit < 1) {30    throw new TypeError(`Expected \`limit\` to be a finite number > 0, got \`${limit}\` (${typeof limit})`);31  }32  if (!Array.isArray(tasks) || !tasks.every(task => typeof task === `function`)) {33    throw new TypeError(`Expected \`tasks\` to be a list of functions returning a promise`);34  }35  return new Promise((resolve, reject) => {36    const result = Array(tasks.length).fill(notSettled);37    const entries = tasks.entries();38    const next = () => {39      const {40        done,41        value42      } = entries.next();43      if (done) {44        const isLast = !result.includes(notSettled);45        if (isLast) resolve(46        /** @type{T[]} **/47        result);48        return;49      }50      const [index, task] = value;51      /**52       * @param {T} x53       */54      const onFulfilled = x => {55        result[index] = x;56        next();57      };58      task().then(onFulfilled, reject);59    };60    Array(limit).fill(0).forEach(next);61  });62}63/* istanbul ignore next */64/**65 * @param {Input} input66 * @param {RawSourceMap | undefined} sourceMap67 * @param {PredefinedOptions & CustomOptions} minimizerOptions68 * @param {ExtractCommentsOptions | undefined} extractComments69 * @return {Promise<MinimizedResult>}70 */71async function terserMinify(input, sourceMap, minimizerOptions, extractComments) {72  /**73   * @param {any} value74   * @returns {boolean}75   */76  const isObject = value => {77    const type = typeof value;78    return value != null && (type === "object" || type === "function");79  };80  /**81   * @param {TerserOptions & { sourceMap: undefined } & ({ output: TerserFormatOptions & { beautify: boolean } } | { format: TerserFormatOptions & { beautify: boolean } })} terserOptions82   * @param {ExtractedComments} extractedComments83   * @returns {ExtractCommentsFunction}84   */85  const buildComments = (terserOptions, extractedComments) => {86    /** @type {{ [index: string]: ExtractCommentsCondition }} */87    const condition = {};88    let comments;89    if (terserOptions.format) {90      ({91        comments92      } = terserOptions.format);93    } else if (terserOptions.output) {94      ({95        comments96      } = terserOptions.output);97    }98    condition.preserve = typeof comments !== "undefined" ? comments : false;99    if (typeof extractComments === "boolean" && extractComments) {100      condition.extract = "some";101    } else if (typeof extractComments === "string" || extractComments instanceof RegExp) {102      condition.extract = extractComments;103    } else if (typeof extractComments === "function") {104      condition.extract = extractComments;105    } else if (extractComments && isObject(extractComments)) {106      condition.extract = typeof extractComments.condition === "boolean" && extractComments.condition ? "some" : typeof extractComments.condition !== "undefined" ? extractComments.condition : "some";107    } else {108      // No extract109      // Preserve using "commentsOpts" or "some"110      condition.preserve = typeof comments !== "undefined" ? comments : "some";111      condition.extract = false;112    } // Ensure that both conditions are functions113    ["preserve", "extract"].forEach(key => {114      /** @type {undefined | string} */115      let regexStr;116      /** @type {undefined | RegExp} */117      let regex;118      switch (typeof condition[key]) {119        case "boolean":120          condition[key] = condition[key] ? () => true : () => false;121          break;122        case "function":123          break;124        case "string":125          if (condition[key] === "all") {126            condition[key] = () => true;127            break;128          }129          if (condition[key] === "some") {130            condition[key] =131            /** @type {ExtractCommentsFunction} */132            (astNode, comment) => (comment.type === "comment2" || comment.type === "comment1") && /@preserve|@lic|@cc_on|^\**!/i.test(comment.value);133            break;134          }135          regexStr =136          /** @type {string} */137          condition[key];138          condition[key] =139          /** @type {ExtractCommentsFunction} */140          (astNode, comment) => new RegExp(141          /** @type {string} */142          regexStr).test(comment.value);143          break;144        default:145          regex =146          /** @type {RegExp} */147          condition[key];148          condition[key] =149          /** @type {ExtractCommentsFunction} */150          (astNode, comment) =>151          /** @type {RegExp} */152          regex.test(comment.value);153      }154    }); // Redefine the comments function to extract and preserve155    // comments according to the two conditions156    return (astNode, comment) => {157      if (158      /** @type {{ extract: ExtractCommentsFunction }} */159      condition.extract(astNode, comment)) {160        const commentText = comment.type === "comment2" ? `/*${comment.value}*/` : `//${comment.value}`; // Don't include duplicate comments161        if (!extractedComments.includes(commentText)) {162          extractedComments.push(commentText);163        }164      }165      return (166        /** @type {{ preserve: ExtractCommentsFunction }} */167        condition.preserve(astNode, comment)168      );169    };170  };171  /**172   * @param {PredefinedOptions & TerserOptions} [terserOptions={}]173   * @returns {TerserOptions & { sourceMap: undefined } & ({ output: TerserFormatOptions & { beautify: boolean } } | { format: TerserFormatOptions & { beautify: boolean } })}174   */175  const buildTerserOptions = (terserOptions = {}) => {176    // Need deep copy objects to avoid https://github.com/terser/terser/issues/366177    return { ...terserOptions,178      compress: typeof terserOptions.compress === "boolean" ? terserOptions.compress : { ...terserOptions.compress179      },180      // ecma: terserOptions.ecma,181      // ie8: terserOptions.ie8,182      // keep_classnames: terserOptions.keep_classnames,183      // keep_fnames: terserOptions.keep_fnames,184      mangle: terserOptions.mangle == null ? true : typeof terserOptions.mangle === "boolean" ? terserOptions.mangle : { ...terserOptions.mangle185      },186      // module: terserOptions.module,187      // nameCache: { ...terserOptions.toplevel },188      // the `output` option is deprecated189      ...(terserOptions.format ? {190        format: {191          beautify: false,192          ...terserOptions.format193        }194      } : {195        output: {196          beautify: false,197          ...terserOptions.output198        }199      }),200      parse: { ...terserOptions.parse201      },202      // safari10: terserOptions.safari10,203      // Ignoring sourceMap from options204      // eslint-disable-next-line no-undefined205      sourceMap: undefined // toplevel: terserOptions.toplevel206    };207  }; // eslint-disable-next-line global-require208  const {209    minify210  } = require("terser"); // Copy `terser` options211  const terserOptions = buildTerserOptions(minimizerOptions); // Let terser generate a SourceMap212  if (sourceMap) {213    // @ts-ignore214    terserOptions.sourceMap = {215      asObject: true216    };217  }218  /** @type {ExtractedComments} */219  const extractedComments = [];220  if (terserOptions.output) {221    terserOptions.output.comments = buildComments(terserOptions, extractedComments);222  } else if (terserOptions.format) {223    terserOptions.format.comments = buildComments(terserOptions, extractedComments);224  }225  const [[filename, code]] = Object.entries(input);226  const result = await minify({227    [filename]: code228  }, terserOptions);229  return {230    code:231    /** @type {string} **/232    result.code,233    // @ts-ignore234    // eslint-disable-next-line no-undefined235    map: result.map ?236    /** @type {RawSourceMap} **/237    result.map : undefined,238    extractedComments239  };240}241/**242 * @returns {string | undefined}243 */244terserMinify.getMinimizerVersion = () => {245  let packageJson;246  try {247    // eslint-disable-next-line global-require248    packageJson = require("terser/package.json");249  } catch (error) {// Ignore250  }251  return packageJson && packageJson.version;252};253/* istanbul ignore next */254/**255 * @param {Input} input256 * @param {RawSourceMap | undefined} sourceMap257 * @param {PredefinedOptions & CustomOptions} minimizerOptions258 * @param {ExtractCommentsOptions | undefined} extractComments259 * @return {Promise<MinimizedResult>}260 */261async function uglifyJsMinify(input, sourceMap, minimizerOptions, extractComments) {262  /**263   * @param {any} value264   * @returns {boolean}265   */266  const isObject = value => {267    const type = typeof value;268    return value != null && (type === "object" || type === "function");269  };270  /**271   * @param {import("uglify-js").MinifyOptions & { sourceMap: undefined } & { output: import("uglify-js").OutputOptions & { beautify: boolean }}} uglifyJsOptions272   * @param {ExtractedComments} extractedComments273   * @returns {ExtractCommentsFunction}274   */275  const buildComments = (uglifyJsOptions, extractedComments) => {276    /** @type {{ [index: string]: ExtractCommentsCondition }} */277    const condition = {};278    const {279      comments280    } = uglifyJsOptions.output;281    condition.preserve = typeof comments !== "undefined" ? comments : false;282    if (typeof extractComments === "boolean" && extractComments) {283      condition.extract = "some";284    } else if (typeof extractComments === "string" || extractComments instanceof RegExp) {285      condition.extract = extractComments;286    } else if (typeof extractComments === "function") {287      condition.extract = extractComments;288    } else if (extractComments && isObject(extractComments)) {289      condition.extract = typeof extractComments.condition === "boolean" && extractComments.condition ? "some" : typeof extractComments.condition !== "undefined" ? extractComments.condition : "some";290    } else {291      // No extract292      // Preserve using "commentsOpts" or "some"293      condition.preserve = typeof comments !== "undefined" ? comments : "some";294      condition.extract = false;295    } // Ensure that both conditions are functions296    ["preserve", "extract"].forEach(key => {297      /** @type {undefined | string} */298      let regexStr;299      /** @type {undefined | RegExp} */300      let regex;301      switch (typeof condition[key]) {302        case "boolean":303          condition[key] = condition[key] ? () => true : () => false;304          break;305        case "function":306          break;307        case "string":308          if (condition[key] === "all") {309            condition[key] = () => true;310            break;311          }312          if (condition[key] === "some") {313            condition[key] =314            /** @type {ExtractCommentsFunction} */315            (astNode, comment) => (comment.type === "comment2" || comment.type === "comment1") && /@preserve|@lic|@cc_on|^\**!/i.test(comment.value);316            break;317          }318          regexStr =319          /** @type {string} */320          condition[key];321          condition[key] =322          /** @type {ExtractCommentsFunction} */323          (astNode, comment) => new RegExp(324          /** @type {string} */325          regexStr).test(comment.value);326          break;327        default:328          regex =329          /** @type {RegExp} */330          condition[key];331          condition[key] =332          /** @type {ExtractCommentsFunction} */333          (astNode, comment) =>334          /** @type {RegExp} */335          regex.test(comment.value);336      }337    }); // Redefine the comments function to extract and preserve338    // comments according to the two conditions339    return (astNode, comment) => {340      if (341      /** @type {{ extract: ExtractCommentsFunction }} */342      condition.extract(astNode, comment)) {343        const commentText = comment.type === "comment2" ? `/*${comment.value}*/` : `//${comment.value}`; // Don't include duplicate comments344        if (!extractedComments.includes(commentText)) {345          extractedComments.push(commentText);346        }347      }348      return (349        /** @type {{ preserve: ExtractCommentsFunction }} */350        condition.preserve(astNode, comment)351      );352    };353  };354  /**355   * @param {PredefinedOptions & import("uglify-js").MinifyOptions} [uglifyJsOptions={}]356   * @returns {import("uglify-js").MinifyOptions & { sourceMap: undefined } & { output: import("uglify-js").OutputOptions & { beautify: boolean }}}357   */358  const buildUglifyJsOptions = (uglifyJsOptions = {}) => {359    // eslint-disable-next-line no-param-reassign360    delete minimizerOptions.ecma; // eslint-disable-next-line no-param-reassign361    delete minimizerOptions.module; // Need deep copy objects to avoid https://github.com/terser/terser/issues/366362    return { ...uglifyJsOptions,363      // warnings: uglifyJsOptions.warnings,364      parse: { ...uglifyJsOptions.parse365      },366      compress: typeof uglifyJsOptions.compress === "boolean" ? uglifyJsOptions.compress : { ...uglifyJsOptions.compress367      },368      mangle: uglifyJsOptions.mangle == null ? true : typeof uglifyJsOptions.mangle === "boolean" ? uglifyJsOptions.mangle : { ...uglifyJsOptions.mangle369      },370      output: {371        beautify: false,372        ...uglifyJsOptions.output373      },374      // Ignoring sourceMap from options375      // eslint-disable-next-line no-undefined376      sourceMap: undefined // toplevel: uglifyJsOptions.toplevel377      // nameCache: { ...uglifyJsOptions.toplevel },378      // ie8: uglifyJsOptions.ie8,379      // keep_fnames: uglifyJsOptions.keep_fnames,380    };381  }; // eslint-disable-next-line global-require, import/no-extraneous-dependencies382  const {383    minify384  } = require("uglify-js"); // Copy `uglify-js` options385  const uglifyJsOptions = buildUglifyJsOptions(minimizerOptions); // Let terser generate a SourceMap386  if (sourceMap) {387    // @ts-ignore388    uglifyJsOptions.sourceMap = true;389  }390  /** @type {ExtractedComments} */391  const extractedComments = []; // @ts-ignore392  uglifyJsOptions.output.comments = buildComments(uglifyJsOptions, extractedComments);393  const [[filename, code]] = Object.entries(input);394  const result = await minify({395    [filename]: code396  }, uglifyJsOptions);397  return {398    code: result.code,399    // eslint-disable-next-line no-undefined400    map: result.map ? JSON.parse(result.map) : undefined,401    errors: result.error ? [result.error] : [],402    warnings: result.warnings || [],403    extractedComments404  };405}406/**407 * @returns {string | undefined}408 */409uglifyJsMinify.getMinimizerVersion = () => {410  let packageJson;411  try {412    // eslint-disable-next-line global-require, import/no-extraneous-dependencies413    packageJson = require("uglify-js/package.json");414  } catch (error) {// Ignore415  }416  return packageJson && packageJson.version;417};418/* istanbul ignore next */419/**420 * @param {Input} input421 * @param {RawSourceMap | undefined} sourceMap422 * @param {PredefinedOptions & CustomOptions} minimizerOptions423 * @return {Promise<MinimizedResult>}424 */425async function swcMinify(input, sourceMap, minimizerOptions) {426  /**427   * @param {PredefinedOptions & import("@swc/core").JsMinifyOptions} [swcOptions={}]428   * @returns {import("@swc/core").JsMinifyOptions & { sourceMap: undefined }}429   */430  const buildSwcOptions = (swcOptions = {}) => {431    // Need deep copy objects to avoid https://github.com/terser/terser/issues/366432    return { ...swcOptions,433      compress: typeof swcOptions.compress === "boolean" ? swcOptions.compress : { ...swcOptions.compress434      },435      mangle: swcOptions.mangle == null ? true : typeof swcOptions.mangle === "boolean" ? swcOptions.mangle : { ...swcOptions.mangle436      },437      // ecma: swcOptions.ecma,438      // keep_classnames: swcOptions.keep_classnames,439      // keep_fnames: swcOptions.keep_fnames,440      // module: swcOptions.module,441      // safari10: swcOptions.safari10,442      // toplevel: swcOptions.toplevel443      // eslint-disable-next-line no-undefined444      sourceMap: undefined445    };446  }; // eslint-disable-next-line import/no-extraneous-dependencies, global-require447  const swc = require("@swc/core"); // Copy `swc` options448  const swcOptions = buildSwcOptions(minimizerOptions); // Let `swc` generate a SourceMap449  if (sourceMap) {450    // @ts-ignore451    swcOptions.sourceMap = true;452  }453  const [[filename, code]] = Object.entries(input);454  const result = await swc.minify(code, swcOptions);455  let map;456  if (result.map) {457    map = JSON.parse(result.map); // TODO workaround for swc because `filename` is not preset as in `swc` signature as for `terser`458    map.sources = [filename];459    delete map.sourcesContent;460  }461  return {462    code: result.code,463    map464  };465}466/**467 * @returns {string | undefined}468 */469swcMinify.getMinimizerVersion = () => {470  let packageJson;471  try {472    // eslint-disable-next-line global-require, import/no-extraneous-dependencies473    packageJson = require("@swc/core/package.json");474  } catch (error) {// Ignore475  }476  return packageJson && packageJson.version;477};478/* istanbul ignore next */479/**480 * @param {Input} input481 * @param {RawSourceMap | undefined} sourceMap482 * @param {PredefinedOptions & CustomOptions} minimizerOptions483 * @return {Promise<MinimizedResult>}484 */485async function esbuildMinify(input, sourceMap, minimizerOptions) {486  /**487   * @param {PredefinedOptions & import("esbuild").TransformOptions} [esbuildOptions={}]488   * @returns {import("esbuild").TransformOptions}489   */490  const buildEsbuildOptions = (esbuildOptions = {}) => {491    // eslint-disable-next-line no-param-reassign492    delete esbuildOptions.ecma;493    if (esbuildOptions.module) {494      // eslint-disable-next-line no-param-reassign495      esbuildOptions.format = "esm";496    } // eslint-disable-next-line no-param-reassign497    delete esbuildOptions.module; // Need deep copy objects to avoid https://github.com/terser/terser/issues/366498    return {499      minify: true,500      legalComments: "inline",501      ...esbuildOptions,502      sourcemap: false503    };504  }; // eslint-disable-next-line import/no-extraneous-dependencies, global-require505  const esbuild = require("esbuild"); // Copy `esbuild` options506  const esbuildOptions = buildEsbuildOptions(minimizerOptions); // Let `esbuild` generate a SourceMap507  if (sourceMap) {508    esbuildOptions.sourcemap = true;509    esbuildOptions.sourcesContent = false;510  }511  const [[filename, code]] = Object.entries(input);512  esbuildOptions.sourcefile = filename;513  const result = await esbuild.transform(code, esbuildOptions);514  return {515    code: result.code,516    // eslint-disable-next-line no-undefined517    map: result.map ? JSON.parse(result.map) : undefined,518    warnings: result.warnings.length > 0 ? result.warnings.map(item => {519      return {520        name: "Warning",521        source: item.location && item.location.file,522        line: item.location && item.location.line,523        column: item.location && item.location.column,524        plugin: item.pluginName,525        message: `${item.text}${item.detail ? `\nDetails:\n${item.detail}` : ""}${item.notes.length > 0 ? `\n\nNotes:\n${item.notes.map(note => `${note.location ? `[${note.location.file}:${note.location.line}:${note.location.column}] ` : ""}${note.text}${note.location ? `\nSuggestion: ${note.location.suggestion}` : ""}${note.location ? `\nLine text:\n${note.location.lineText}\n` : ""}`).join("\n")}` : ""}`526      };527    }) : []528  };529}530/**531 * @returns {string | undefined}532 */533esbuildMinify.getMinimizerVersion = () => {534  let packageJson;535  try {536    // eslint-disable-next-line global-require, import/no-extraneous-dependencies537    packageJson = require("esbuild/package.json");538  } catch (error) {// Ignore539  }540  return packageJson && packageJson.version;541};542module.exports = {543  throttleAll,544  terserMinify,545  uglifyJsMinify,546  swcMinify,547  esbuildMinify...

minify.js

Source:minify.js

1"use strict";2const {3  minify: terserMinify4} = require('terser');5const buildTerserOptions = ({6  ecma,7  warnings,8  parse = {},9  compress = {},10  mangle,11  module,12  output,13  toplevel,14  nameCache,15  ie8,16  /* eslint-disable camelcase */17  keep_classnames,18  keep_fnames,19  /* eslint-enable camelcase */20  safari1021} = {}) => ({22  ecma,23  warnings,24  parse: { ...parse25  },26  compress: typeof compress === 'boolean' ? compress : { ...compress27  },28  // eslint-disable-next-line no-nested-ternary29  mangle: mangle == null ? true : typeof mangle === 'boolean' ? mangle : { ...mangle30  },31  output: {32    beautify: false,33    ...output34  },35  module,36  // Ignoring sourceMap from options37  sourceMap: null,38  toplevel,39  nameCache,40  ie8,41  keep_classnames,42  keep_fnames,43  safari1044});45function isObject(value) {46  const type = typeof value;47  return value != null && (type === 'object' || type === 'function');48}49const buildComments = (options, terserOptions, extractedComments) => {50  const condition = {};51  const commentsOpts = terserOptions.output.comments;52  const {53    extractComments54  } = options;55  condition.preserve = typeof commentsOpts !== 'undefined' ? commentsOpts : false;56  if (typeof extractComments === 'boolean' && extractComments) {57    condition.extract = 'some';58  } else if (typeof extractComments === 'string' || extractComments instanceof RegExp) {59    condition.extract = extractComments;60  } else if (typeof extractComments === 'function') {61    condition.extract = extractComments;62  } else if (isObject(extractComments)) {63    condition.extract = typeof extractComments.condition === 'boolean' && extractComments.condition ? 'some' : typeof extractComments.condition !== 'undefined' ? extractComments.condition : 'some';64  } else {65    // No extract66    // Preserve using "commentsOpts" or "some"67    condition.preserve = typeof commentsOpts !== 'undefined' ? commentsOpts : 'some';68    condition.extract = false;69  } // Ensure that both conditions are functions70  ['preserve', 'extract'].forEach(key => {71    let regexStr;72    let regex;73    switch (typeof condition[key]) {74      case 'boolean':75        condition[key] = condition[key] ? () => true : () => false;76        break;77      case 'function':78        break;79      case 'string':80        if (condition[key] === 'all') {81          condition[key] = () => true;82          break;83        }84        if (condition[key] === 'some') {85          condition[key] = (astNode, comment) => {86            return (comment.type === 'comment2' || comment.type === 'comment1') && /@preserve|@lic|@cc_on|^\**!/i.test(comment.value);87          };88          break;89        }90        regexStr = condition[key];91        condition[key] = (astNode, comment) => {92          return new RegExp(regexStr).test(comment.value);93        };94        break;95      default:96        regex = condition[key];97        condition[key] = (astNode, comment) => regex.test(comment.value);98    }99  }); // Redefine the comments function to extract and preserve100  // comments according to the two conditions101  return (astNode, comment) => {102    if (condition.extract(astNode, comment)) {103      const commentText = comment.type === 'comment2' ? `/*${comment.value}*/` : `//${comment.value}`; // Don't include duplicate comments104      if (!extractedComments.includes(commentText)) {105        extractedComments.push(commentText);106      }107    }108    return condition.preserve(astNode, comment);109  };110};111const minify = options => {112  const {113    file,114    input,115    inputSourceMap,116    minify: minifyFn117  } = options;118  if (minifyFn) {119    return minifyFn({120      [file]: input121    }, inputSourceMap);122  } // Copy terser options123  const terserOptions = buildTerserOptions(options.terserOptions); // Let terser generate a SourceMap124  if (inputSourceMap) {125    terserOptions.sourceMap = {126      asObject: true127    };128  }129  const extractedComments = [];130  terserOptions.output.comments = buildComments(options, terserOptions, extractedComments);131  const {132    error,133    map,134    code,135    warnings136  } = terserMinify({137    [file]: input138  }, terserOptions);139  return {140    error,141    map,142    code,143    warnings,144    extractedComments145  };146};...

Using AI Code Generation

1const { extractComments } = require('playwright-core/lib/utils/stackTrace');2const { extractComments } = require('playwright-core/lib/utils/stackTrace');3const { extractComments } = require('playwright-core/lib/utils/stackTrace');4const { extractComments } = require('playwright-core/lib/utils/stackTrace');5const { extractComments } = require('playwright-core/lib/utils/stackTrace');6const { extractComments } = require('playwright-core/lib/utils/stackTrace');7const { extractComments } = require('playwright-core/lib/utils/stackTrace');8const { extractComments } = require('playwright-core/lib/utils/stackTrace');9const { extractComments } = require('playwright-core/lib/utils/stackTrace');10const { extractComments } = require('playwright-core/lib/utils/stackTrace');11const { extractComments } = require('playwright-core/lib/utils/stackTrace');12const { extractComments } = require('playwright-core/lib/utils/stackTrace');13const { extractComments } = require('playwright-core/lib/utils/stackTrace');14const { extractComments } = require('playwright-core/lib/utils/stackTrace');15const { extractComments } = require('playwright-core/lib/utils/stackTrace');16const { extractComments } = require('playwright-core/lib/utils/stackTrace');17const { extractComments } = require('playwright-core/lib/utils/stackTrace');

Using AI Code Generation

1const { extractComments } = require('@playwright/test');2const { test } = require('@playwright/test');3const { expect } = require('@playwright/test');4const { describe } = require('@playwright/test');5const { it } = require('@playwright/test');6const { beforeAll } = require('@playwright/test');7const { afterAll } = require('@playwright/test');8const { beforeEach } = require('@playwright/test');9const { afterEach } = require('@playwright/test');10test.describe('Playwright Internal', () => {11  test.beforeAll(async ({ page }) => {12  });13  test('should extract comments from the file', async ({ page }) => {14    const comments = await extractComments('test.js');15    expect(comments).toContain('Path: test.js');16  });17});18const { extractComments } = require('@playwright/test');19const { test } = require('@playwright/test');20const { expect } = require('@playwright/test');21const { describe } = require('@playwright/test');22const { it } = require('@playwright/test');23const { beforeAll } = require('@playwright/test');24const { afterAll } = require('@playwright/test');25const { beforeEach } = require('@playwright/test');26const { afterEach } = require('@playwright/test');27test.describe('Playwright Internal', () => {28  test.beforeAll(async ({ page }) => {29  });30  test('should extract comments from the file', async ({ page }) => {31    const comments = await extractComments('test1.js');32    expect(comments).toContain('Path: test1.js');33  });34});

Using AI Code Generation

1const { extractComments } = require('playwright/lib/utils/extractComments');2const { parse } = require('playwright/lib/utils/parseJavaScript');3const { readFileSync } = require('fs');4const { join } = require('path');5const file = readFileSync(join(__dirname, 'test.ts'), 'utf8');6const comments = extractComments(parse(file));7console.log(comments);8[{9  loc: {10    start: { line: 1, column: 0 },11    end: { line: 4, column: 1 }12  }13}]

Using AI Code Generation

1const { extractComments } = require('playwright/lib/utils/doclint/markdown');2const { parse } = require('playwright/lib/utils/doclint/extract');3const { join } = require('path');4const { readFileSync } = require('fs');5const { promisify } = require('util');6const { exec } = require('child_process');7const { chromium } = require('playwright');8const execAsync = promisify(exec);9const { source, language } = extractComments(parse(readFileSync(join(__dirname, 'test.md')).toString()))[0];10(async () => {11  const browser = await chromium.launch();12  const page = await browser.newPage();13  await page.goto('data:text/html,<div id="container"></div>');14  await page.addScriptTag({ content: source, language });15  const output = await page.evaluate(() => {16    return container.textContent;17  });18  console.log(output);19  await browser.close();20})();21### `extractComments(document)`22### `parse(markdown)`

Using AI Code Generation

1const { extractComments } = require('@playwright/test/lib/test/runner');2const fs = require('fs');3const path = require('path');4const testFile = path.join(process.cwd(), 'test.js');5const comments = extractComments(fs.readFileSync(testFile, 'utf8'), testFile);6console.log(comments);7const { test } = require('@playwright/test');8test('my test', async ({ page, testInfo }) => {9  console.log(testInfo.comments);10});11const { test } = require('@playwright/test');12test('my test', async ({ page, testInfo }) => {13  console.log(testInfo.comments);14});

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.