| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193 | 
							- 'use strict';
 
- var NATIVE_ARRAY_BUFFER = require('../internals/array-buffer-basic-detection');
 
- var DESCRIPTORS = require('../internals/descriptors');
 
- var global = require('../internals/global');
 
- var isCallable = require('../internals/is-callable');
 
- var isObject = require('../internals/is-object');
 
- var hasOwn = require('../internals/has-own-property');
 
- var classof = require('../internals/classof');
 
- var tryToString = require('../internals/try-to-string');
 
- var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
 
- var defineBuiltIn = require('../internals/define-built-in');
 
- var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
 
- var isPrototypeOf = require('../internals/object-is-prototype-of');
 
- var getPrototypeOf = require('../internals/object-get-prototype-of');
 
- var setPrototypeOf = require('../internals/object-set-prototype-of');
 
- var wellKnownSymbol = require('../internals/well-known-symbol');
 
- var uid = require('../internals/uid');
 
- var InternalStateModule = require('../internals/internal-state');
 
- var enforceInternalState = InternalStateModule.enforce;
 
- var getInternalState = InternalStateModule.get;
 
- var Int8Array = global.Int8Array;
 
- var Int8ArrayPrototype = Int8Array && Int8Array.prototype;
 
- var Uint8ClampedArray = global.Uint8ClampedArray;
 
- var Uint8ClampedArrayPrototype = Uint8ClampedArray && Uint8ClampedArray.prototype;
 
- var TypedArray = Int8Array && getPrototypeOf(Int8Array);
 
- var TypedArrayPrototype = Int8ArrayPrototype && getPrototypeOf(Int8ArrayPrototype);
 
- var ObjectPrototype = Object.prototype;
 
- var TypeError = global.TypeError;
 
- var TO_STRING_TAG = wellKnownSymbol('toStringTag');
 
- var TYPED_ARRAY_TAG = uid('TYPED_ARRAY_TAG');
 
- var TYPED_ARRAY_CONSTRUCTOR = 'TypedArrayConstructor';
 
- // Fixing native typed arrays in Opera Presto crashes the browser, see #595
 
- var NATIVE_ARRAY_BUFFER_VIEWS = NATIVE_ARRAY_BUFFER && !!setPrototypeOf && classof(global.opera) !== 'Opera';
 
- var TYPED_ARRAY_TAG_REQUIRED = false;
 
- var NAME, Constructor, Prototype;
 
- var TypedArrayConstructorsList = {
 
-   Int8Array: 1,
 
-   Uint8Array: 1,
 
-   Uint8ClampedArray: 1,
 
-   Int16Array: 2,
 
-   Uint16Array: 2,
 
-   Int32Array: 4,
 
-   Uint32Array: 4,
 
-   Float32Array: 4,
 
-   Float64Array: 8
 
- };
 
- var BigIntArrayConstructorsList = {
 
-   BigInt64Array: 8,
 
-   BigUint64Array: 8
 
- };
 
- var isView = function isView(it) {
 
-   if (!isObject(it)) return false;
 
-   var klass = classof(it);
 
-   return klass === 'DataView'
 
-     || hasOwn(TypedArrayConstructorsList, klass)
 
-     || hasOwn(BigIntArrayConstructorsList, klass);
 
- };
 
- var getTypedArrayConstructor = function (it) {
 
-   var proto = getPrototypeOf(it);
 
-   if (!isObject(proto)) return;
 
-   var state = getInternalState(proto);
 
-   return (state && hasOwn(state, TYPED_ARRAY_CONSTRUCTOR)) ? state[TYPED_ARRAY_CONSTRUCTOR] : getTypedArrayConstructor(proto);
 
- };
 
- var isTypedArray = function (it) {
 
-   if (!isObject(it)) return false;
 
-   var klass = classof(it);
 
-   return hasOwn(TypedArrayConstructorsList, klass)
 
-     || hasOwn(BigIntArrayConstructorsList, klass);
 
- };
 
- var aTypedArray = function (it) {
 
-   if (isTypedArray(it)) return it;
 
-   throw new TypeError('Target is not a typed array');
 
- };
 
- var aTypedArrayConstructor = function (C) {
 
-   if (isCallable(C) && (!setPrototypeOf || isPrototypeOf(TypedArray, C))) return C;
 
-   throw new TypeError(tryToString(C) + ' is not a typed array constructor');
 
- };
 
- var exportTypedArrayMethod = function (KEY, property, forced, options) {
 
-   if (!DESCRIPTORS) return;
 
-   if (forced) for (var ARRAY in TypedArrayConstructorsList) {
 
-     var TypedArrayConstructor = global[ARRAY];
 
-     if (TypedArrayConstructor && hasOwn(TypedArrayConstructor.prototype, KEY)) try {
 
-       delete TypedArrayConstructor.prototype[KEY];
 
-     } catch (error) {
 
-       // old WebKit bug - some methods are non-configurable
 
-       try {
 
-         TypedArrayConstructor.prototype[KEY] = property;
 
-       } catch (error2) { /* empty */ }
 
-     }
 
-   }
 
-   if (!TypedArrayPrototype[KEY] || forced) {
 
-     defineBuiltIn(TypedArrayPrototype, KEY, forced ? property
 
-       : NATIVE_ARRAY_BUFFER_VIEWS && Int8ArrayPrototype[KEY] || property, options);
 
-   }
 
- };
 
- var exportTypedArrayStaticMethod = function (KEY, property, forced) {
 
-   var ARRAY, TypedArrayConstructor;
 
-   if (!DESCRIPTORS) return;
 
-   if (setPrototypeOf) {
 
-     if (forced) for (ARRAY in TypedArrayConstructorsList) {
 
-       TypedArrayConstructor = global[ARRAY];
 
-       if (TypedArrayConstructor && hasOwn(TypedArrayConstructor, KEY)) try {
 
-         delete TypedArrayConstructor[KEY];
 
-       } catch (error) { /* empty */ }
 
-     }
 
-     if (!TypedArray[KEY] || forced) {
 
-       // V8 ~ Chrome 49-50 `%TypedArray%` methods are non-writable non-configurable
 
-       try {
 
-         return defineBuiltIn(TypedArray, KEY, forced ? property : NATIVE_ARRAY_BUFFER_VIEWS && TypedArray[KEY] || property);
 
-       } catch (error) { /* empty */ }
 
-     } else return;
 
-   }
 
-   for (ARRAY in TypedArrayConstructorsList) {
 
-     TypedArrayConstructor = global[ARRAY];
 
-     if (TypedArrayConstructor && (!TypedArrayConstructor[KEY] || forced)) {
 
-       defineBuiltIn(TypedArrayConstructor, KEY, property);
 
-     }
 
-   }
 
- };
 
- for (NAME in TypedArrayConstructorsList) {
 
-   Constructor = global[NAME];
 
-   Prototype = Constructor && Constructor.prototype;
 
-   if (Prototype) enforceInternalState(Prototype)[TYPED_ARRAY_CONSTRUCTOR] = Constructor;
 
-   else NATIVE_ARRAY_BUFFER_VIEWS = false;
 
- }
 
- for (NAME in BigIntArrayConstructorsList) {
 
-   Constructor = global[NAME];
 
-   Prototype = Constructor && Constructor.prototype;
 
-   if (Prototype) enforceInternalState(Prototype)[TYPED_ARRAY_CONSTRUCTOR] = Constructor;
 
- }
 
- // WebKit bug - typed arrays constructors prototype is Object.prototype
 
- if (!NATIVE_ARRAY_BUFFER_VIEWS || !isCallable(TypedArray) || TypedArray === Function.prototype) {
 
-   // eslint-disable-next-line no-shadow -- safe
 
-   TypedArray = function TypedArray() {
 
-     throw new TypeError('Incorrect invocation');
 
-   };
 
-   if (NATIVE_ARRAY_BUFFER_VIEWS) for (NAME in TypedArrayConstructorsList) {
 
-     if (global[NAME]) setPrototypeOf(global[NAME], TypedArray);
 
-   }
 
- }
 
- if (!NATIVE_ARRAY_BUFFER_VIEWS || !TypedArrayPrototype || TypedArrayPrototype === ObjectPrototype) {
 
-   TypedArrayPrototype = TypedArray.prototype;
 
-   if (NATIVE_ARRAY_BUFFER_VIEWS) for (NAME in TypedArrayConstructorsList) {
 
-     if (global[NAME]) setPrototypeOf(global[NAME].prototype, TypedArrayPrototype);
 
-   }
 
- }
 
- // WebKit bug - one more object in Uint8ClampedArray prototype chain
 
- if (NATIVE_ARRAY_BUFFER_VIEWS && getPrototypeOf(Uint8ClampedArrayPrototype) !== TypedArrayPrototype) {
 
-   setPrototypeOf(Uint8ClampedArrayPrototype, TypedArrayPrototype);
 
- }
 
- if (DESCRIPTORS && !hasOwn(TypedArrayPrototype, TO_STRING_TAG)) {
 
-   TYPED_ARRAY_TAG_REQUIRED = true;
 
-   defineBuiltInAccessor(TypedArrayPrototype, TO_STRING_TAG, {
 
-     configurable: true,
 
-     get: function () {
 
-       return isObject(this) ? this[TYPED_ARRAY_TAG] : undefined;
 
-     }
 
-   });
 
-   for (NAME in TypedArrayConstructorsList) if (global[NAME]) {
 
-     createNonEnumerableProperty(global[NAME], TYPED_ARRAY_TAG, NAME);
 
-   }
 
- }
 
- module.exports = {
 
-   NATIVE_ARRAY_BUFFER_VIEWS: NATIVE_ARRAY_BUFFER_VIEWS,
 
-   TYPED_ARRAY_TAG: TYPED_ARRAY_TAG_REQUIRED && TYPED_ARRAY_TAG,
 
-   aTypedArray: aTypedArray,
 
-   aTypedArrayConstructor: aTypedArrayConstructor,
 
-   exportTypedArrayMethod: exportTypedArrayMethod,
 
-   exportTypedArrayStaticMethod: exportTypedArrayStaticMethod,
 
-   getTypedArrayConstructor: getTypedArrayConstructor,
 
-   isView: isView,
 
-   isTypedArray: isTypedArray,
 
-   TypedArray: TypedArray,
 
-   TypedArrayPrototype: TypedArrayPrototype
 
- };
 
 
  |