40 lines
1.1 KiB
JavaScript
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;
|
|
};
|