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- 'use strict';
- var GetIntrinsic = require('get-intrinsic');
- var $Object = GetIntrinsic('%Object%');
- var $StringPrototype = GetIntrinsic('%String.prototype%');
- var $SyntaxError = GetIntrinsic('%SyntaxError%');
- var $TypeError = GetIntrinsic('%TypeError%');
- var DefinePropertyOrThrow = require('./DefinePropertyOrThrow');
- var Type = require('./Type');
- var setProto = require('../helpers/setProto');
- // https://262.ecma-international.org/6.0/#sec-stringcreate
- module.exports = function StringCreate(value, prototype) {
- if (Type(value) !== 'String') {
- throw new $TypeError('Assertion failed: `S` must be a String');
- }
- var S = $Object(value);
- if (prototype !== $StringPrototype) {
- if (setProto) {
- setProto(S, prototype);
- } else {
- throw new $SyntaxError('StringCreate: a `proto` argument that is not `String.prototype` is not supported in an environment that does not support setting the [[Prototype]]');
- }
- }
- var length = value.length;
- DefinePropertyOrThrow(S, 'length', {
- '[[Configurable]]': false,
- '[[Enumerable]]': false,
- '[[Value]]': length,
- '[[Writable]]': false
- });
- return S;
- };
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