Constnium/node_modules/es-abstract/2019/StringCreate.js
2022-06-23 02:27:43 +02:00

40 lines
1.1 KiB
JavaScript

'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;
};