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- 'use strict';
- var $SyntaxError = require('es-errors/syntax');
- var $TypeError = require('es-errors/type');
- var whichTypedArray = require('which-typed-array');
- var availableTypedArrays = require('available-typed-arrays')();
- var IsArray = require('./IsArray');
- var SpeciesConstructor = require('./SpeciesConstructor');
- var TypedArrayCreateFromConstructor = require('./TypedArrayCreateFromConstructor');
- var getConstructor = require('../helpers/typedArrayConstructors');
- // https://262.ecma-international.org/15.0/#typedarray-species-create
- module.exports = function TypedArraySpeciesCreate(exemplar, argumentList) {
- if (availableTypedArrays.length === 0) {
- throw new $SyntaxError('Assertion failed: Typed Arrays are not supported in this environment');
- }
- var kind = whichTypedArray(exemplar);
- if (!kind) {
- throw new $TypeError('Assertion failed: exemplar must be a TypedArray'); // step 1
- }
- if (!IsArray(argumentList)) {
- throw new $TypeError('Assertion failed: `argumentList` must be a List'); // step 1
- }
- var defaultConstructor = getConstructor(kind); // step 2
- if (typeof defaultConstructor !== 'function') {
- throw new $SyntaxError('Assertion failed: `constructor` of `exemplar` (' + kind + ') must exist. Please report this!');
- }
- var constructor = SpeciesConstructor(exemplar, defaultConstructor); // step 3
- return TypedArrayCreateFromConstructor(constructor, argumentList); // step 4
- };
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