Number、String、Boolean、Symbol 和 Object

❌ 永远不要使用类型 Number、String、Boolean、Symbol 或 Object 这些类型指的是非原始装箱对象，它们几乎从未在 JavaScript 代码中得到适当使用。

❌ Don't ever use the types Number, String, Boolean, Symbol, or Object These types refer to non-primitive boxed objects that are almost never used appropriately in JavaScript code.

/* WRONG */
function reverse(s: String): String;

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/* OK */
function reverse(s: string): string;

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