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- 'use strict';
- var GetIntrinsic = require('get-intrinsic');
- var $ArrayPrototype = GetIntrinsic('%Array.prototype%');
- var $RangeError = require('es-errors/range');
- var $SyntaxError = require('es-errors/syntax');
- var $TypeError = require('es-errors/type');
- var isInteger = require('../helpers/isInteger');
- var hasProto = require('has-proto')();
- var MAX_ARRAY_LENGTH = Math.pow(2, 32) - 1;
- var $setProto = GetIntrinsic('%Object.setPrototypeOf%', true) || (
- hasProto
- ? function (O, proto) {
- O.__proto__ = proto;
- return O;
- }
- : null
- );
- module.exports = function ArrayCreate(length) {
- if (!isInteger(length) || length < 0) {
- throw new $TypeError('Assertion failed: `length` must be an integer Number >= 0');
- }
- if (length > MAX_ARRAY_LENGTH) {
- throw new $RangeError('length is greater than (2**32 - 1)');
- }
- var proto = arguments.length > 1 ? arguments[1] : $ArrayPrototype;
- var A = [];
- if (proto !== $ArrayPrototype) {
- if (!$setProto) {
- throw new $SyntaxError('ArrayCreate: a `proto` argument that is not `Array.prototype` is not supported in an environment that does not support setting the [[Prototype]]');
- }
- $setProto(A, proto);
- }
- if (length !== 0) {
- A.length = length;
- }
-
- return A;
- };
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