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我研究了在打字稿中使用装饰器的错误处理，发现了一个我没想到的行为

function handleError(): any {
    return function (_target: any, propertyKey: string, descriptor: PropertyDescriptor) {
        const original = descriptor.value;
        if (typeof original !== 'function') return;

        try {
            const result = original.apply(this, arguments);
            return result;
        } catch (e) {
            console.error(`An error occurred!\nFunction: ${propertyKey}\nError: ${e}`);
        }
    };
}

class test {
    @handleError()
    mightThrow() {
        throw 'Oh no, an error occurred!';
    }
}

new test().mightThrow();

运行此代码时，我得到以下控制台输出：

An error occurred!
Function: mightThrow
Error: Oh no, an error occurred!

/home/venny/Projects/lol/index.js:28
        throw 'Oh no, an error occurred!';
        ^
Oh no, an error occurred!
(Use `node --trace-uncaught ...` to show where the exception was thrown)

即使我在装饰器函数中发现了错误，为什么我仍然在这里得到标准的 nodejs 未捕获异常控制台输出？

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0 回答 0