diff options
Diffstat (limited to 'node_modules/es-abstract/2019/ArraySetLength.js')
-rw-r--r-- | node_modules/es-abstract/2019/ArraySetLength.js | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/node_modules/es-abstract/2019/ArraySetLength.js b/node_modules/es-abstract/2019/ArraySetLength.js deleted file mode 100644 index c9134c6..0000000 --- a/node_modules/es-abstract/2019/ArraySetLength.js +++ /dev/null @@ -1,85 +0,0 @@ -'use strict'; - -var GetIntrinsic = require('../GetIntrinsic'); - -var $RangeError = GetIntrinsic('%RangeError%'); -var $TypeError = GetIntrinsic('%TypeError%'); - -var assign = require('object.assign'); - -var isPropertyDescriptor = require('../helpers/isPropertyDescriptor'); - -var IsArray = require('./IsArray'); -var IsAccessorDescriptor = require('./IsAccessorDescriptor'); -var IsDataDescriptor = require('./IsDataDescriptor'); -var OrdinaryDefineOwnProperty = require('./OrdinaryDefineOwnProperty'); -var OrdinaryGetOwnProperty = require('./OrdinaryGetOwnProperty'); -var ToNumber = require('./ToNumber'); -var ToString = require('./ToString'); -var ToUint32 = require('./ToUint32'); -var Type = require('./Type'); - -// https://www.ecma-international.org/ecma-262/6.0/#sec-arraysetlength - -// eslint-disable-next-line max-statements, max-lines-per-function -module.exports = function ArraySetLength(A, Desc) { - if (!IsArray(A)) { - throw new $TypeError('Assertion failed: A must be an Array'); - } - if (!isPropertyDescriptor({ - Type: Type, - IsDataDescriptor: IsDataDescriptor, - IsAccessorDescriptor: IsAccessorDescriptor - }, Desc)) { - throw new $TypeError('Assertion failed: Desc must be a Property Descriptor'); - } - if (!('[[Value]]' in Desc)) { - return OrdinaryDefineOwnProperty(A, 'length', Desc); - } - var newLenDesc = assign({}, Desc); - var newLen = ToUint32(Desc['[[Value]]']); - var numberLen = ToNumber(Desc['[[Value]]']); - if (newLen !== numberLen) { - throw new $RangeError('Invalid array length'); - } - newLenDesc['[[Value]]'] = newLen; - var oldLenDesc = OrdinaryGetOwnProperty(A, 'length'); - if (!IsDataDescriptor(oldLenDesc)) { - throw new $TypeError('Assertion failed: an array had a non-data descriptor on `length`'); - } - var oldLen = oldLenDesc['[[Value]]']; - if (newLen >= oldLen) { - return OrdinaryDefineOwnProperty(A, 'length', newLenDesc); - } - if (!oldLenDesc['[[Writable]]']) { - return false; - } - var newWritable; - if (!('[[Writable]]' in newLenDesc) || newLenDesc['[[Writable]]']) { - newWritable = true; - } else { - newWritable = false; - newLenDesc['[[Writable]]'] = true; - } - var succeeded = OrdinaryDefineOwnProperty(A, 'length', newLenDesc); - if (!succeeded) { - return false; - } - while (newLen < oldLen) { - oldLen -= 1; - // eslint-disable-next-line no-param-reassign - var deleteSucceeded = delete A[ToString(oldLen)]; - if (!deleteSucceeded) { - newLenDesc['[[Value]]'] = oldLen + 1; - if (!newWritable) { - newLenDesc['[[Writable]]'] = false; - OrdinaryDefineOwnProperty(A, 'length', newLenDesc); - return false; - } - } - } - if (!newWritable) { - return OrdinaryDefineOwnProperty(A, 'length', { '[[Writable]]': false }); - } - return true; -}; |