给定以下代码，为什么不(obj.foo)()接收windowas this？在我看来，括号被忽略了，而不是被当作一个表达式来计算foo？
window.bar = 'window';
const obj = { bar: 'obj' };
obj.foo = function() {
console.log(`Called through ${this.bar}`);
}
obj.foo(); // Called through obj
(obj.foo)(); // Called through obj - Why?
(0, obj.foo)(); // Called through window
(true && obj.foo)(); // Called through window