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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-18 23:26:45 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-18 23:26:45 +0100
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-rw-r--r--node_modules/es-abstract/2018/ArrayCreate.js53
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diff --git a/node_modules/es-abstract/2018/ArrayCreate.js b/node_modules/es-abstract/2018/ArrayCreate.js
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-'use strict';
-
-var GetIntrinsic = require('../GetIntrinsic');
-
-var $ArrayPrototype = GetIntrinsic('%Array.prototype%');
-var $RangeError = GetIntrinsic('%RangeError%');
-var $SyntaxError = GetIntrinsic('%SyntaxError%');
-var $TypeError = GetIntrinsic('%TypeError%');
-
-var IsInteger = require('./IsInteger');
-
-var MAX_ARRAY_LENGTH = Math.pow(2, 32) - 1;
-
-var $setProto = GetIntrinsic('%Object.setPrototypeOf%', true) || (
- // eslint-disable-next-line no-proto, no-negated-condition
- [].__proto__ !== $ArrayPrototype
- ? null
- : function (O, proto) {
- O.__proto__ = proto; // eslint-disable-line no-proto, no-param-reassign
- return O;
- }
-);
-
-// https://www.ecma-international.org/ecma-262/6.0/#sec-arraycreate
-
-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 = []; // steps 5 - 7, and 9
- if (proto !== $ArrayPrototype) { // step 8
- if (!$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) { // bypasses the need for step 2
- A.length = length;
- }
- /* step 10, the above as a shortcut for the below
- OrdinaryDefineOwnProperty(A, 'length', {
- '[[Configurable]]': false,
- '[[Enumerable]]': false,
- '[[Value]]': length,
- '[[Writable]]': true
- });
- */
- return A;
-};