source: imaps-frontend/node_modules/es-abstract/2018/StringCreate.js@ d565449

'use strict';

var GetIntrinsic = require('get-intrinsic');

var $Object = require('es-object-atoms');
var $StringPrototype = GetIntrinsic('%String.prototype%');
var $SyntaxError = require('es-errors/syntax');
var $TypeError = require('es-errors/type');

var DefinePropertyOrThrow = require('./DefinePropertyOrThrow');

var setProto = require('../helpers/setProto');

// https://262.ecma-international.org/6.0/#sec-stringcreate

module.exports = function StringCreate(value, prototype) {
        if (typeof 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;
};