source: frontend/node_modules/es-abstract/2019/OrdinaryToPrimitive.js

'use strict';

var $TypeError = require('es-errors/type');
var isObject = require('es-object-atoms/isObject');

var Call = require('./Call');
var Get = require('./Get');
var IsCallable = require('./IsCallable');

var inspect = require('object-inspect');

// https://262.ecma-international.org/8.0/#sec-ordinarytoprimitive

module.exports = function OrdinaryToPrimitive(O, hint) {
        if (!isObject(O)) {
                throw new $TypeError('Assertion failed: Type(O) is not Object');
        }
        if (/* typeof 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 (!isObject(result)) {
                                return result;
                        }
                }
        }

        throw new $TypeError('No primitive value for ' + inspect(O));
};