模板属性

编译器已经有限的支持模板类型。它只能推断的类型,这在一个匿名函数字面量从类型的这个论点,是否这个论点是缺失的。The compiler has limited support for template types. It can only infer the type of this inside an anonymous function literal from the type of the this argument and whether the this argument is missing.

/**
 * @param {function(this:T, ...)} fn
 * @param {T} thisObj
 * @param {...*} var_args
 * @template T
 */
goog.bind = function(fn, thisObj, var_args) {
...
};
// Possibly generates a missing property warning.
goog.bind(function() { this.someProperty; }, new SomeClass());
// Generates an undefined this warning.
goog.bind(function() { this.someProperty; });