nodejs 断言模块：assert.throws 只返回“未定义”

Question

As found in the official documentation . Trying the below code would only result in undefined .

assert.throws(
  () => {
    throw new Error('Wrong value');
  },
  Error
);

I was able to find some issues about the arrow functions => not working in the statement but changing that to function() doesn't change a thing. As in the link above my node version is the exact same version.

What am I missing?

EDIT:

console.log(assert.throws(
  () => {
    throw new Error('Wrong value');
  },
  Error
)) // this will log "undefined"

let result = assert.throws(
  () => {
    throw new Error('Wrong value');
  },
  Error
);

console.log(result); // as well as this

Many thanks

Answer 1

So, as @tkausl has stated in the comments (thanks by the way.) assert.throws "asserts that the passed function throws".

In order to achieve my desired result, I had to do this:

console.log(() => {
    let error;
    try {
        // function that may throw an error
    } catch (e) {
        error = e;
    }
    // and than do something with 'error' and return a value
    return error
}())