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// 异常 function err(msg: string): never { // OK throw new Error(msg); } // 死循环 function loopForever(): never { // OK while (true) {}; }
function warnUser(): void { console.log("This is my warning message"); }
总结:拥有 void 类型的函数能正常运行,仅无返回值;拥有 never 类型的函数无法正常返回,无法终止,或是会抛出异常。
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