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How to use IdlCallback method in wpt

Best JavaScript code snippet using wpt

00_webidl.js

Source:00_webidl.js

1// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.2// Adapted from https://github.com/jsdom/webidl-conversions.3// Copyright Domenic Denicola. Licensed under BSD-2-Clause License.4// Original license at https://github.com/jsdom/webidl-conversions/blob/master/LICENSE.md.5/// <reference path="../../core/internal.d.ts" />6"use strict";7((window) => {8  const {9    ArrayBuffer,10    ArrayBufferIsView,11    ArrayPrototypeForEach,12    ArrayPrototypePush,13    ArrayPrototypeSort,14    ArrayIteratorPrototype,15    BigInt,16    BigIntAsIntN,17    BigIntAsUintN,18    DataView,19    Float32Array,20    Float64Array,21    FunctionPrototypeBind,22    Int16Array,23    Int32Array,24    Int8Array,25    isNaN,26    MathFloor,27    MathFround,28    MathMax,29    MathMin,30    MathPow,31    MathRound,32    MathTrunc,33    Number,34    NumberIsFinite,35    NumberIsNaN,36    // deno-lint-ignore camelcase37    NumberMAX_SAFE_INTEGER,38    // deno-lint-ignore camelcase39    NumberMIN_SAFE_INTEGER,40    ObjectCreate,41    ObjectDefineProperties,42    ObjectDefineProperty,43    ObjectGetOwnPropertyDescriptor,44    ObjectGetOwnPropertyDescriptors,45    ObjectGetPrototypeOf,46    ObjectIs,47    PromisePrototypeThen,48    PromiseReject,49    PromiseResolve,50    ReflectApply,51    ReflectDefineProperty,52    ReflectGetOwnPropertyDescriptor,53    ReflectOwnKeys,54    RegExpPrototypeTest,55    Set,56    // TODO(lucacasonato): add SharedArrayBuffer to primordials57    // SharedArrayBuffer,58    String,59    StringFromCodePoint,60    StringPrototypeCharCodeAt,61    StringPrototypeCodePointAt,62    Symbol,63    SymbolIterator,64    SymbolToStringTag,65    TypeError,66    Uint16Array,67    Uint32Array,68    Uint8Array,69    Uint8ClampedArray,70  } = window.__bootstrap.primordials;71  function makeException(ErrorType, message, opts = {}) {72    return new ErrorType(73      `${opts.prefix ? opts.prefix + ": " : ""}${74        opts.context ? opts.context : "Value"75      } ${message}`,76    );77  }78  function toNumber(value) {79    if (typeof value === "bigint") {80      throw TypeError("Cannot convert a BigInt value to a number");81    }82    return Number(value);83  }84  function type(V) {85    if (V === null) {86      return "Null";87    }88    switch (typeof V) {89      case "undefined":90        return "Undefined";91      case "boolean":92        return "Boolean";93      case "number":94        return "Number";95      case "string":96        return "String";97      case "symbol":98        return "Symbol";99      case "bigint":100        return "BigInt";101      case "object":102      // Falls through103      case "function":104      // Falls through105      default:106        // Per ES spec, typeof returns an implemention-defined value that is not any of the existing ones for107        // uncallable non-standard exotic objects. Yet Type() which the Web IDL spec depends on returns Object for108        // such cases. So treat the default case as an object.109        return "Object";110    }111  }112  // Round x to the nearest integer, choosing the even integer if it lies halfway between two.113  function evenRound(x) {114    // There are four cases for numbers with fractional part being .5:115    //116    // case |     x     | floor(x) | round(x) | expected | x <> 0 | x % 1 | x & 1 |   example117    //   1  |  2n + 0.5 |  2n      |  2n + 1  |  2n      |   >    |  0.5  |   0   |  0.5 ->  0118    //   2  |  2n + 1.5 |  2n + 1  |  2n + 2  |  2n + 2  |   >    |  0.5  |   1   |  1.5 ->  2119    //   3  | -2n - 0.5 | -2n - 1  | -2n      | -2n      |   <    | -0.5  |   0   | -0.5 ->  0120    //   4  | -2n - 1.5 | -2n - 2  | -2n - 1  | -2n - 2  |   <    | -0.5  |   1   | -1.5 -> -2121    // (where n is a non-negative integer)122    //123    // Branch here for cases 1 and 4124    if (125      (x > 0 && x % 1 === +0.5 && (x & 1) === 0) ||126      (x < 0 && x % 1 === -0.5 && (x & 1) === 1)127    ) {128      return censorNegativeZero(MathFloor(x));129    }130    return censorNegativeZero(MathRound(x));131  }132  function integerPart(n) {133    return censorNegativeZero(MathTrunc(n));134  }135  function sign(x) {136    return x < 0 ? -1 : 1;137  }138  function modulo(x, y) {139    // https://tc39.github.io/ecma262/#eqn-modulo140    // Note that http://stackoverflow.com/a/4467559/3191 does NOT work for large modulos141    const signMightNotMatch = x % y;142    if (sign(y) !== sign(signMightNotMatch)) {143      return signMightNotMatch + y;144    }145    return signMightNotMatch;146  }147  function censorNegativeZero(x) {148    return x === 0 ? 0 : x;149  }150  function createIntegerConversion(bitLength, typeOpts) {151    const isSigned = !typeOpts.unsigned;152    let lowerBound;153    let upperBound;154    if (bitLength === 64) {155      upperBound = NumberMAX_SAFE_INTEGER;156      lowerBound = !isSigned ? 0 : NumberMIN_SAFE_INTEGER;157    } else if (!isSigned) {158      lowerBound = 0;159      upperBound = MathPow(2, bitLength) - 1;160    } else {161      lowerBound = -MathPow(2, bitLength - 1);162      upperBound = MathPow(2, bitLength - 1) - 1;163    }164    const twoToTheBitLength = MathPow(2, bitLength);165    const twoToOneLessThanTheBitLength = MathPow(2, bitLength - 1);166    return (V, opts = {}) => {167      let x = toNumber(V, opts);168      x = censorNegativeZero(x);169      if (opts.enforceRange) {170        if (!NumberIsFinite(x)) {171          throw makeException(TypeError, "is not a finite number", opts);172        }173        x = integerPart(x);174        if (x < lowerBound || x > upperBound) {175          throw makeException(176            TypeError,177            `is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`,178            opts,179          );180        }181        return x;182      }183      if (!NumberIsNaN(x) && opts.clamp) {184        x = MathMin(MathMax(x, lowerBound), upperBound);185        x = evenRound(x);186        return x;187      }188      if (!NumberIsFinite(x) || x === 0) {189        return 0;190      }191      x = integerPart(x);192      // Math.pow(2, 64) is not accurately representable in JavaScript, so try to avoid these per-spec operations if193      // possible. Hopefully it's an optimization for the non-64-bitLength cases too.194      if (x >= lowerBound && x <= upperBound) {195        return x;196      }197      // These will not work great for bitLength of 64, but oh well. See the README for more details.198      x = modulo(x, twoToTheBitLength);199      if (isSigned && x >= twoToOneLessThanTheBitLength) {200        return x - twoToTheBitLength;201      }202      return x;203    };204  }205  function createLongLongConversion(bitLength, { unsigned }) {206    const upperBound = NumberMAX_SAFE_INTEGER;207    const lowerBound = unsigned ? 0 : NumberMIN_SAFE_INTEGER;208    const asBigIntN = unsigned ? BigIntAsUintN : BigIntAsIntN;209    return (V, opts = {}) => {210      let x = toNumber(V, opts);211      x = censorNegativeZero(x);212      if (opts.enforceRange) {213        if (!NumberIsFinite(x)) {214          throw makeException(TypeError, "is not a finite number", opts);215        }216        x = integerPart(x);217        if (x < lowerBound || x > upperBound) {218          throw makeException(219            TypeError,220            `is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`,221            opts,222          );223        }224        return x;225      }226      if (!NumberIsNaN(x) && opts.clamp) {227        x = MathMin(MathMax(x, lowerBound), upperBound);228        x = evenRound(x);229        return x;230      }231      if (!NumberIsFinite(x) || x === 0) {232        return 0;233      }234      let xBigInt = BigInt(integerPart(x));235      xBigInt = asBigIntN(bitLength, xBigInt);236      return Number(xBigInt);237    };238  }239  const converters = [];240  converters.any = (V) => {241    return V;242  };243  converters.boolean = function (val) {244    return !!val;245  };246  converters.byte = createIntegerConversion(8, { unsigned: false });247  converters.octet = createIntegerConversion(8, { unsigned: true });248  converters.short = createIntegerConversion(16, { unsigned: false });249  converters["unsigned short"] = createIntegerConversion(16, {250    unsigned: true,251  });252  converters.long = createIntegerConversion(32, { unsigned: false });253  converters["unsigned long"] = createIntegerConversion(32, { unsigned: true });254  converters["long long"] = createLongLongConversion(64, { unsigned: false });255  converters["unsigned long long"] = createLongLongConversion(64, {256    unsigned: true,257  });258  converters.float = (V, opts) => {259    const x = toNumber(V, opts);260    if (!NumberIsFinite(x)) {261      throw makeException(262        TypeError,263        "is not a finite floating-point value",264        opts,265      );266    }267    if (ObjectIs(x, -0)) {268      return x;269    }270    const y = MathFround(x);271    if (!NumberIsFinite(y)) {272      throw makeException(273        TypeError,274        "is outside the range of a single-precision floating-point value",275        opts,276      );277    }278    return y;279  };280  converters["unrestricted float"] = (V, opts) => {281    const x = toNumber(V, opts);282    if (isNaN(x)) {283      return x;284    }285    if (ObjectIs(x, -0)) {286      return x;287    }288    return MathFround(x);289  };290  converters.double = (V, opts) => {291    const x = toNumber(V, opts);292    if (!NumberIsFinite(x)) {293      throw makeException(294        TypeError,295        "is not a finite floating-point value",296        opts,297      );298    }299    return x;300  };301  converters["unrestricted double"] = (V, opts) => {302    const x = toNumber(V, opts);303    return x;304  };305  converters.DOMString = function (V, opts = {}) {306    if (opts.treatNullAsEmptyString && V === null) {307      return "";308    }309    if (typeof V === "symbol") {310      throw makeException(311        TypeError,312        "is a symbol, which cannot be converted to a string",313        opts,314      );315    }316    return String(V);317  };318  converters.ByteString = (V, opts) => {319    const x = converters.DOMString(V, opts);320    let c;321    for (let i = 0; (c = StringPrototypeCodePointAt(x, i)) !== undefined; ++i) {322      if (c > 255) {323        throw makeException(TypeError, "is not a valid ByteString", opts);324      }325    }326    return x;327  };328  converters.USVString = (V, opts) => {329    const S = converters.DOMString(V, opts);330    const n = S.length;331    let U = "";332    for (let i = 0; i < n; ++i) {333      const c = StringPrototypeCharCodeAt(S, i);334      if (c < 0xd800 || c > 0xdfff) {335        U += StringFromCodePoint(c);336      } else if (0xdc00 <= c && c <= 0xdfff) {337        U += StringFromCodePoint(0xfffd);338      } else if (i === n - 1) {339        U += StringFromCodePoint(0xfffd);340      } else {341        const d = StringPrototypeCharCodeAt(S, i + 1);342        if (0xdc00 <= d && d <= 0xdfff) {343          const a = c & 0x3ff;344          const b = d & 0x3ff;345          U += StringFromCodePoint((2 << 15) + (2 << 9) * a + b);346          ++i;347        } else {348          U += StringFromCodePoint(0xfffd);349        }350      }351    }352    return U;353  };354  converters.object = (V, opts) => {355    if (type(V) !== "Object") {356      throw makeException(TypeError, "is not an object", opts);357    }358    return V;359  };360  // Not exported, but used in Function and VoidFunction.361  // Neither Function nor VoidFunction is defined with [TreatNonObjectAsNull], so362  // handling for that is omitted.363  function convertCallbackFunction(V, opts) {364    if (typeof V !== "function") {365      throw makeException(TypeError, "is not a function", opts);366    }367    return V;368  }369  function isNonSharedArrayBuffer(V) {370    return V instanceof ArrayBuffer;371  }372  function isSharedArrayBuffer(V) {373    return V instanceof SharedArrayBuffer;374  }375  function isArrayBufferDetached(V) {376    try {377      new Uint8Array(V);378      return false;379    } catch {380      return true;381    }382  }383  converters.ArrayBuffer = (V, opts = {}) => {384    if (!isNonSharedArrayBuffer(V)) {385      if (opts.allowShared && !isSharedArrayBuffer(V)) {386        throw makeException(387          TypeError,388          "is not an ArrayBuffer or SharedArrayBuffer",389          opts,390        );391      }392      throw makeException(TypeError, "is not an ArrayBuffer", opts);393    }394    if (isArrayBufferDetached(V)) {395      throw makeException(TypeError, "is a detached ArrayBuffer", opts);396    }397    return V;398  };399  converters.DataView = (V, opts = {}) => {400    if (!(V instanceof DataView)) {401      throw makeException(TypeError, "is not a DataView", opts);402    }403    if (!opts.allowShared && isSharedArrayBuffer(V.buffer)) {404      throw makeException(405        TypeError,406        "is backed by a SharedArrayBuffer, which is not allowed",407        opts,408      );409    }410    if (isArrayBufferDetached(V.buffer)) {411      throw makeException(412        TypeError,413        "is backed by a detached ArrayBuffer",414        opts,415      );416    }417    return V;418  };419  // Returns the unforgeable `TypedArray` constructor name or `undefined`,420  // if the `this` value isn't a valid `TypedArray` object.421  //422  // https://tc39.es/ecma262/#sec-get-%typedarray%.prototype-@@tostringtag423  const typedArrayNameGetter = ObjectGetOwnPropertyDescriptor(424    ObjectGetPrototypeOf(Uint8Array).prototype,425    SymbolToStringTag,426  ).get;427  ArrayPrototypeForEach(428    [429      Int8Array,430      Int16Array,431      Int32Array,432      Uint8Array,433      Uint16Array,434      Uint32Array,435      Uint8ClampedArray,436      Float32Array,437      Float64Array,438    ],439    (func) => {440      const name = func.name;441      const article = RegExpPrototypeTest(/^[AEIOU]/, name) ? "an" : "a";442      converters[name] = (V, opts = {}) => {443        if (!ArrayBufferIsView(V) || typedArrayNameGetter.call(V) !== name) {444          throw makeException(445            TypeError,446            `is not ${article} ${name} object`,447            opts,448          );449        }450        if (!opts.allowShared && isSharedArrayBuffer(V.buffer)) {451          throw makeException(452            TypeError,453            "is a view on a SharedArrayBuffer, which is not allowed",454            opts,455          );456        }457        if (isArrayBufferDetached(V.buffer)) {458          throw makeException(459            TypeError,460            "is a view on a detached ArrayBuffer",461            opts,462          );463        }464        return V;465      };466    },467  );468  // Common definitions469  converters.ArrayBufferView = (V, opts = {}) => {470    if (!ArrayBufferIsView(V)) {471      throw makeException(472        TypeError,473        "is not a view on an ArrayBuffer or SharedArrayBuffer",474        opts,475      );476    }477    if (!opts.allowShared && isSharedArrayBuffer(V.buffer)) {478      throw makeException(479        TypeError,480        "is a view on a SharedArrayBuffer, which is not allowed",481        opts,482      );483    }484    if (isArrayBufferDetached(V.buffer)) {485      throw makeException(486        TypeError,487        "is a view on a detached ArrayBuffer",488        opts,489      );490    }491    return V;492  };493  converters.BufferSource = (V, opts = {}) => {494    if (ArrayBufferIsView(V)) {495      if (!opts.allowShared && isSharedArrayBuffer(V.buffer)) {496        throw makeException(497          TypeError,498          "is a view on a SharedArrayBuffer, which is not allowed",499          opts,500        );501      }502      if (isArrayBufferDetached(V.buffer)) {503        throw makeException(504          TypeError,505          "is a view on a detached ArrayBuffer",506          opts,507        );508      }509      return V;510    }511    if (!opts.allowShared && !isNonSharedArrayBuffer(V)) {512      throw makeException(513        TypeError,514        "is not an ArrayBuffer or a view on one",515        opts,516      );517    }518    if (519      opts.allowShared &&520      !isSharedArrayBuffer(V) &&521      !isNonSharedArrayBuffer(V)522    ) {523      throw makeException(524        TypeError,525        "is not an ArrayBuffer, SharedArrayBuffer, or a view on one",526        opts,527      );528    }529    if (isArrayBufferDetached(V)) {530      throw makeException(TypeError, "is a detached ArrayBuffer", opts);531    }532    return V;533  };534  converters.DOMTimeStamp = converters["unsigned long long"];535  converters.DOMHighResTimeStamp = converters["double"];536  converters.Function = convertCallbackFunction;537  converters.VoidFunction = convertCallbackFunction;538  converters["UVString?"] = createNullableConverter(539    converters.USVString,540  );541  converters["sequence<double>"] = createSequenceConverter(542    converters.double,543  );544  converters["sequence<object>"] = createSequenceConverter(545    converters.object,546  );547  converters["Promise<undefined>"] = createPromiseConverter(() => undefined);548  converters["sequence<ByteString>"] = createSequenceConverter(549    converters.ByteString,550  );551  converters["sequence<sequence<ByteString>>"] = createSequenceConverter(552    converters["sequence<ByteString>"],553  );554  converters["record<ByteString, ByteString>"] = createRecordConverter(555    converters.ByteString,556    converters.ByteString,557  );558  converters["sequence<USVString>"] = createSequenceConverter(559    converters.USVString,560  );561  converters["sequence<sequence<USVString>>"] = createSequenceConverter(562    converters["sequence<USVString>"],563  );564  converters["record<USVString, USVString>"] = createRecordConverter(565    converters.USVString,566    converters.USVString,567  );568  converters["sequence<DOMString>"] = createSequenceConverter(569    converters.DOMString,570  );571  function requiredArguments(length, required, opts = {}) {572    if (length < required) {573      const errMsg = `${574        opts.prefix ? opts.prefix + ": " : ""575      }${required} argument${576        required === 1 ? "" : "s"577      } required, but only ${length} present.`;578      throw new TypeError(errMsg);579    }580  }581  function createDictionaryConverter(name, ...dictionaries) {582    let hasRequiredKey = false;583    const allMembers = [];584    for (const members of dictionaries) {585      for (const member of members) {586        if (member.required) {587          hasRequiredKey = true;588        }589        ArrayPrototypePush(allMembers, member);590      }591    }592    ArrayPrototypeSort(allMembers, (a, b) => {593      if (a.key == b.key) {594        return 0;595      }596      return a.key < b.key ? -1 : 1;597    });598    const defaultValues = {};599    for (const member of allMembers) {600      if ("defaultValue" in member) {601        const idlMemberValue = member.defaultValue;602        const imvType = typeof idlMemberValue;603        // Copy by value types can be directly assigned, copy by reference types604        // need to be re-created for each allocation.605        if (606          imvType === "number" || imvType === "boolean" ||607          imvType === "string" || imvType === "bigint" ||608          imvType === "undefined"609        ) {610          defaultValues[member.key] = idlMemberValue;611        } else {612          ObjectDefineProperty(defaultValues, member.key, {613            get() {614              return member.defaultValue;615            },616            enumerable: true,617          });618        }619      }620    }621    return function (V, opts = {}) {622      const typeV = type(V);623      switch (typeV) {624        case "Undefined":625        case "Null":626        case "Object":627          break;628        default:629          throw makeException(630            TypeError,631            "can not be converted to a dictionary",632            opts,633          );634      }635      const esDict = V;636      const idlDict = { ...defaultValues };637      // NOTE: fast path Null and Undefined.638      if ((V === undefined || V === null) && !hasRequiredKey) {639        return idlDict;640      }641      for (const member of allMembers) {642        const key = member.key;643        let esMemberValue;644        if (typeV === "Undefined" || typeV === "Null") {645          esMemberValue = undefined;646        } else {647          esMemberValue = esDict[key];648        }649        if (esMemberValue !== undefined) {650          const context = `'${key}' of '${name}'${651            opts.context ? ` (${opts.context})` : ""652          }`;653          const converter = member.converter;654          const idlMemberValue = converter(esMemberValue, { ...opts, context });655          idlDict[key] = idlMemberValue;656        } else if (member.required) {657          throw makeException(658            TypeError,659            `can not be converted to '${name}' because '${key}' is required in '${name}'.`,660            { ...opts },661          );662        }663      }664      return idlDict;665    };666  }667  // https://heycam.github.io/webidl/#es-enumeration668  function createEnumConverter(name, values) {669    const E = new Set(values);670    return function (V, opts = {}) {671      const S = String(V);672      if (!E.has(S)) {673        throw new TypeError(674          `${675            opts.prefix ? opts.prefix + ": " : ""676          }The provided value '${S}' is not a valid enum value of type ${name}.`,677        );678      }679      return S;680    };681  }682  function createNullableConverter(converter) {683    return (V, opts = {}) => {684      // FIXME: If Type(V) is not Object, and the conversion to an IDL value is685      // being performed due to V being assigned to an attribute whose type is a686      // nullable callback function that is annotated with687      // [LegacyTreatNonObjectAsNull], then return the IDL nullable type T?688      // value null.689      if (V === null || V === undefined) return null;690      return converter(V, opts);691    };692  }693  // https://heycam.github.io/webidl/#es-sequence694  function createSequenceConverter(converter) {695    return function (V, opts = {}) {696      if (type(V) !== "Object") {697        throw makeException(698          TypeError,699          "can not be converted to sequence.",700          opts,701        );702      }703      const iter = V?.[SymbolIterator]?.();704      if (iter === undefined) {705        throw makeException(706          TypeError,707          "can not be converted to sequence.",708          opts,709        );710      }711      const array = [];712      while (true) {713        const res = iter?.next?.();714        if (res === undefined) {715          throw makeException(716            TypeError,717            "can not be converted to sequence.",718            opts,719          );720        }721        if (res.done === true) break;722        const val = converter(res.value, {723          ...opts,724          context: `${opts.context}, index ${array.length}`,725        });726        ArrayPrototypePush(array, val);727      }728      return array;729    };730  }731  function createRecordConverter(keyConverter, valueConverter) {732    return (V, opts) => {733      if (type(V) !== "Object") {734        throw makeException(735          TypeError,736          "can not be converted to dictionary.",737          opts,738        );739      }740      const keys = ReflectOwnKeys(V);741      const result = {};742      for (const key of keys) {743        const desc = ObjectGetOwnPropertyDescriptor(V, key);744        if (desc !== undefined && desc.enumerable === true) {745          const typedKey = keyConverter(key, opts);746          const value = V[key];747          const typedValue = valueConverter(value, opts);748          result[typedKey] = typedValue;749        }750      }751      return result;752    };753  }754  function createPromiseConverter(converter) {755    return (V, opts) =>756      PromisePrototypeThen(PromiseResolve(V), (V) => converter(V, opts));757  }758  function invokeCallbackFunction(759    callable,760    args,761    thisArg,762    returnValueConverter,763    opts,764  ) {765    try {766      const rv = ReflectApply(callable, thisArg, args);767      return returnValueConverter(rv, {768        prefix: opts.prefix,769        context: "return value",770      });771    } catch (err) {772      if (opts.returnsPromise === true) {773        return PromiseReject(err);774      }775      throw err;776    }777  }778  const brand = Symbol("[[webidl.brand]]");779  function createInterfaceConverter(name, prototype) {780    return (V, opts) => {781      if (!(V instanceof prototype) || V[brand] !== brand) {782        throw makeException(TypeError, `is not of type ${name}.`, opts);783      }784      return V;785    };786  }787  // TODO(lucacasonato): have the user pass in the prototype, and not the type.788  function createBranded(Type) {789    const t = ObjectCreate(Type.prototype);790    t[brand] = brand;791    return t;792  }793  function assertBranded(self, prototype) {794    if (!(self instanceof prototype) || self[brand] !== brand) {795      throw new TypeError("Illegal invocation");796    }797  }798  function illegalConstructor() {799    throw new TypeError("Illegal constructor");800  }801  function define(target, source) {802    for (const key of ReflectOwnKeys(source)) {803      const descriptor = ReflectGetOwnPropertyDescriptor(source, key);804      if (descriptor && !ReflectDefineProperty(target, key, descriptor)) {805        throw new TypeError(`Cannot redefine property: ${String(key)}`);806      }807    }808  }809  const _iteratorInternal = Symbol("iterator internal");810  const globalIteratorPrototype = ObjectGetPrototypeOf(ArrayIteratorPrototype);811  function mixinPairIterable(name, prototype, dataSymbol, keyKey, valueKey) {812    const iteratorPrototype = ObjectCreate(globalIteratorPrototype, {813      [SymbolToStringTag]: { configurable: true, value: `${name} Iterator` },814    });815    define(iteratorPrototype, {816      next() {817        const internal = this && this[_iteratorInternal];818        if (!internal) {819          throw new TypeError(820            `next() called on a value that is not a ${name} iterator object`,821          );822        }823        const { target, kind, index } = internal;824        const values = target[dataSymbol];825        const len = values.length;826        if (index >= len) {827          return { value: undefined, done: true };828        }829        const pair = values[index];830        internal.index = index + 1;831        let result;832        switch (kind) {833          case "key":834            result = pair[keyKey];835            break;836          case "value":837            result = pair[valueKey];838            break;839          case "key+value":840            result = [pair[keyKey], pair[valueKey]];841            break;842        }843        return { value: result, done: false };844      },845    });846    function createDefaultIterator(target, kind) {847      const iterator = ObjectCreate(iteratorPrototype);848      ObjectDefineProperty(iterator, _iteratorInternal, {849        value: { target, kind, index: 0 },850        configurable: true,851      });852      return iterator;853    }854    function entries() {855      assertBranded(this, prototype);856      return createDefaultIterator(this, "key+value");857    }858    const properties = {859      entries: {860        value: entries,861        writable: true,862        enumerable: true,863        configurable: true,864      },865      [SymbolIterator]: {866        value: entries,867        writable: true,868        enumerable: false,869        configurable: true,870      },871      keys: {872        value: function keys() {873          assertBranded(this, prototype);874          return createDefaultIterator(this, "key");875        },876        writable: true,877        enumerable: true,878        configurable: true,879      },880      values: {881        value: function values() {882          assertBranded(this, prototype);883          return createDefaultIterator(this, "value");884        },885        writable: true,886        enumerable: true,887        configurable: true,888      },889      forEach: {890        value: function forEach(idlCallback, thisArg = undefined) {891          assertBranded(this, prototype);892          const prefix = `Failed to execute 'forEach' on '${name}'`;893          requiredArguments(arguments.length, 1, { prefix });894          idlCallback = converters["Function"](idlCallback, {895            prefix,896            context: "Argument 1",897          });898          idlCallback = FunctionPrototypeBind(899            idlCallback,900            thisArg ?? globalThis,901          );902          const pairs = this[dataSymbol];903          for (let i = 0; i < pairs.length; i++) {904            const entry = pairs[i];905            idlCallback(entry[valueKey], entry[keyKey], this);906          }907        },908        writable: true,909        enumerable: true,910        configurable: true,911      },912    };913    return ObjectDefineProperties(prototype.prototype, properties);914  }915  function configurePrototype(prototype) {916    const descriptors = ObjectGetOwnPropertyDescriptors(prototype.prototype);917    for (const key in descriptors) {918      if (key === "constructor") continue;919      const descriptor = descriptors[key];920      if ("value" in descriptor && typeof descriptor.value === "function") {921        ObjectDefineProperty(prototype.prototype, key, {922          enumerable: true,923          writable: true,924          configurable: true,925        });926      } else if ("get" in descriptor) {927        ObjectDefineProperty(prototype.prototype, key, {928          enumerable: true,929          configurable: true,930        });931      }932    }933  }934  window.__bootstrap ??= {};935  window.__bootstrap.webidl = {936    type,937    makeException,938    converters,939    requiredArguments,940    createDictionaryConverter,941    createEnumConverter,942    createNullableConverter,943    createSequenceConverter,944    createRecordConverter,945    createPromiseConverter,946    invokeCallbackFunction,947    createInterfaceConverter,948    brand,949    createBranded,950    assertBranded,951    illegalConstructor,952    mixinPairIterable,953    configurePrototype,954  };...

Using AI Code Generation

1function testIdlCallback(obj) {2  return obj;3}4function testIdlInterface(obj) {5  return obj;6}7function testIdlArray(obj) {8  return obj;9}10function testIdlObject(obj) {11  return obj;12}13function testIdlAny(obj) {14  return obj;15}16function testIdlUnion(obj) {17  return obj;18}19function testIdlEnum(obj) {20  return obj;21}22function testIdlTypedef(obj) {23  return obj;24}25function testIdlDictionary(obj) {26  return obj;27}28function testIdlInterfaceWithMembers(obj) {29  return obj;30}31function testIdlInterfaceWithConstants(obj) {32  return obj;33}34function testIdlInterfaceWithStaticMethods(obj) {35  return obj;36}37function testIdlInterfaceWithStaticAttributes(obj) {38  return obj;39}40function testIdlInterfaceWithAttributes(obj) {41  return obj;42}43function testIdlInterfaceWithMethods(obj) {44  return obj;45}46function testIdlInterfaceWithInheritedAttributes(obj) {47  return obj;48}49function testIdlInterfaceWithInheritedMethods(obj) {50  return obj;51}

Using AI Code Generation

1function IdlCallback() {2    return {3        "response": {4            "headers": {5            },6        }7    };8}9function IdlCallbackWithProperties() {10    return {11        "response": {12            "headers": {13            },14        }15    };16}17function IdlCallbackWithPropertiesAndCallback() {18    return {19        "response": {20            "headers": {21            },22        }23    };24}25function IdlCallbackWithPropertiesAndCallbackAndException() {26    return {27        "response": {28            "headers": {29            },30        }31    };32}33function IdlCallbackWithPropertiesAndCallbackAndExceptionAndException() {34    return {35        "response": {36            "headers": {37            },38        }39    };40}41function IdlCallbackWithPropertiesAndCallbackAndExceptionAndExceptionAndException() {

Using AI Code Generation

1function run_test() {2  var idl_array = new IdlArray();3  idl_array.add_objects({4    HTMLIFrameElement: ["document.createElement('iframe')"],5    HTMLAnchorElement: ["document.createElement('a')"],6    HTMLAreaElement: ["document.createElement('area')"],7    HTMLAudioElement: ["document.createElement('audio')"],8    HTMLVideoElement: ["document.createElement('video')"],9    HTMLButtonElement: ["document.createElement('button')"],10    HTMLCanvasElement: ["document.createElement('canvas')"],11    HTMLDataListElement: ["document.createElement('datalist')"],12    HTMLDetailsElement: ["document.createElement('details')"],13    HTMLDialogElement: ["document.createElement('dialog')"],14    HTMLDivElement: ["document.createElement('div')"],15    HTMLFieldSetElement: ["document.createElement('fieldset')"],16    HTMLFormElement: ["document.createElement('form')"],17    HTMLHRElement: ["document.createElement('hr')"],18    HTMLHeadElement: ["document.createElement('head')"],19    HTMLHeadingElement: ["document.createElement('h1')"],20    HTMLHtmlElement: ["document.createElement('html')"],21    HTMLImageElement: ["document.createElement('img')"],22    HTMLInputElement: ["document.createElement('input')"],23    HTMLLabelElement: ["document.createElement('label')"],24    HTMLLegendElement: ["document.createElement('legend')"],25    HTMLLIElement: ["document.createElement('li')"],26    HTMLLinkElement: ["document.createElement('link')"],27    HTMLMapElement: ["document.createElement('map')"],28    HTMLMetaElement: ["document.createElement('meta')"],29    HTMLMeterElement: ["document.createElement('meter')"],30    HTMLModElement: ["document.createElement('del')"],31    HTMLOListElement: ["document.createElement('ol')"],32    HTMLObjectElement: ["document.createElement('object')"],33    HTMLOptGroupElement: ["document.createElement('optgroup')"],34    HTMLOptionElement: ["document.createElement('option')"],35    HTMLOutputElement: ["document.createElement('output')"],36    HTMLParagraphElement: ["document.createElement('p')"],37    HTMLParamElement: ["document.createElement('param')"],38    HTMLPreElement: ["document.createElement('pre')"],39    HTMLProgressElement: ["document.createElement('progress')"],40    HTMLQuoteElement: ["document.createElement('

Using AI Code Generation

1function IdlCallback() {2  return {3      {4          interface Test {5            string foo();6          };7      },8  };9}10function IdlCallback() {11  return {12      {13          interface Test2 {14            string foo();15          };16      },17  };18}19function IdlCallback() {20  return {21      {22          interface Test2 {23            string foo();24          };25      },26  };27}28function IdlCallback() {29  return {30      {31          interface Test3 {32            string foo();33          };34      },35  };36}37function IdlCallback() {38  return {39      {40          interface Test4 {41            string foo();42          };43      },44  };45}46function IdlCallback() {47  return {48      {49          interface Test5 {50            string foo();51          };52      },53  };54}55function IdlCallback() {56  return {57      {58          interface Test6 {59            string foo();60          };61      },62  };63}64function IdlCallback() {65  return {66      {67          interface Test7 {68            string foo();69          };70      },71  };72}

Using AI Code Generation

1var wptserve = require('wptserve');2function handleRequest(request, response) {3  response.setHeader('Access-Control-Allow-Origin', '*');4  response.setHeader('Access-Control-Allow-Credentials', 'true');5  response.setHeader('Content-Type', 'text/plain');6  response.setHeader('Access-Control-Allow-Methods', 'GET');7  response.setHeader('Access-Control-Allow-Headers', 'content-type');8  response.setHeader('Access-Control-Max-Age', '86400');9  response.setHeader('Access-Control-Expose-Headers', 'X-Custom-Header');10  response.setHeader('X-Custom-Header', '42');11  response.setHeader('Access-Control-Allow-Headers', 'X-Custom-Header');12  response.setHeader('Access-Control-Allow-Headers', 'X-Custom-Header-2');13  response.setHeader('X-Custom-Header-2', '42');14  response.setHeader('Access-Control-Allow-Headers', 'X-Custom-Header-3');15  response.setHeader('X-Custom-Header-3', '42');16  response.setHeader('Access-Control-Allow-Headers', 'X-Custom-Header-4');17  response.setHeader('X-Custom-Header-4', '42');18  response.setHeader('Access-Control-Allow-Headers', 'X-Custom-Header-5');19  response.setHeader('X-Custom-Header-5', '42');20  response.setHeader('Access-Control-Allow-Headers', 'X-Custom-Header-6');21  response.setHeader('X-Custom-Header-6', '42');22  response.setHeader('Access-Control-Allow-Headers', 'X-Custom-Header-7');23  response.setHeader('X-Custom-Header-7', '42');24  response.setHeader('Access-Control-Allow-Headers', 'X-Custom-Header-8');25  response.setHeader('X-Custom-Header-8', '42');26  response.setHeader('Access-Control-Allow-Headers', 'X-Custom-Header-9');27  response.setHeader('X-Custom-Header-9', '42');28  response.setHeader('Access-Control-Allow-Headers', 'X-Custom-Header-10');29  response.setHeader('X-Custom-Header-10', '42');30  response.setHeader('Access-Control-Allow-Headers', 'X-Custom-Header-11');31  response.setHeader('X-Custom-Header-11', '42');32  response.setHeader('Access-Control-Allow-Headers', 'X-Custom-Header

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.