为什么这会在 Typescript 中触发 Identifier Expected 错误？
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Why does this trigger an Identifier Expected error in Typescript?
提问by Breck
The second line in this statement causes an error. I understand if I wrap the lambda in parentheses it solves the problem as in the first line. I'm just curious why it is an error, as in JavaScript a lambda there would work fine.
此语句中的第二行导致错误。我知道如果我将 lambda 括在括号中，它可以解决第一行中的问题。我只是好奇为什么它是一个错误，因为在 JavaScript 中，一个 lambda 可以正常工作。
var okay = true && (() => {});
var fails = true && () => {};
回答by Paleo
It is a precedence issue:
这是一个优先级问题：
var fails = true && () => {};
// <-- Error: Expression expected
... is equivalent to:
...相当于：
var fails = (true && ()) => {};
