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