| '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 (S !== $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; |
| }; |