1 // 7.1.1 ToPrimitive(input [, PreferredType])
2 var isObject = require('./_is-object');
3 // instead of the ES6 spec version, we didn't implement @@toPrimitive case
4 // and the second argument - flag - preferred type is a string
5 module.exports = function(it, S){
6 if(!isObject(it))return it;
8 if(S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it)))return val;
9 if(typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it)))return val;
10 if(!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it)))return val;
11 throw TypeError("Can't convert object to primitive value");