'use strict';

var toStr = Object.prototype.toString;

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

var isCallable = require('is-callable');

// ecma-international.org/ecma-262/5.1/#sec-8.12.8 var ES5internalSlots = {

'[[DefaultValue]]': function (O) {
        var actualHint;
        if (arguments.length > 1) {
                actualHint = arguments[1];
        } else {
                actualHint = toStr.call(O) === '[object Date]' ? String : Number;
        }

        if (actualHint === String || actualHint === Number) {
                var methods = actualHint === String ? ['toString', 'valueOf'] : ['valueOf', 'toString'];
                var value, i;
                for (i = 0; i < methods.length; ++i) {
                        if (isCallable(O[methods[i]])) {
                                value = O[methods[i]]();
                                if (isPrimitive(value)) {
                                        return value;
                                }
                        }
                }
                throw new TypeError('No default value');
        }
        throw new TypeError('invalid [[DefaultValue]] hint supplied');
}

};

// ecma-international.org/ecma-262/5.1/#sec-9.1 module.exports = function ToPrimitive(input) {

if (isPrimitive(input)) {
        return input;
}
if (arguments.length > 1) {
        return ES5internalSlots['[[DefaultValue]]'](input, arguments[1]);
}
return ES5internalSlots['[[DefaultValue]]'](input);

};