Constnium/node_modules/es-abstract/2021/OrdinaryToPrimitive.js
2022-06-23 02:27:43 +02:00

38 lines
1 KiB
JavaScript

'use strict';
var GetIntrinsic = require('get-intrinsic');
var $TypeError = GetIntrinsic('%TypeError%');
var Call = require('./Call');
var Get = require('./Get');
var IsCallable = require('./IsCallable');
var Type = require('./Type');
var inspect = require('object-inspect');
// https://262.ecma-international.org/8.0/#sec-ordinarytoprimitive
module.exports = function OrdinaryToPrimitive(O, hint) {
if (Type(O) !== 'Object') {
throw new $TypeError('Assertion failed: Type(O) is not Object');
}
if (/* Type(hint) !== 'String' || */ hint !== 'string' && hint !== 'number') {
throw new $TypeError('Assertion failed: `hint` must be "string" or "number"');
}
var methodNames = hint === 'string' ? ['toString', 'valueOf'] : ['valueOf', 'toString'];
for (var i = 0; i < methodNames.length; i += 1) {
var name = methodNames[i];
var method = Get(O, name);
if (IsCallable(method)) {
var result = Call(method, O);
if (Type(result) !== 'Object') {
return result;
}
}
}
throw new $TypeError('No primitive value for ' + inspect(O));
};