assert.throws works incorrectly for functions that throw undefined

[not-an-aardvark]

• Version: 9.3.0
• Platform: macOS
• Subsystem: assert

assert.throws and assert.doesNotThrow seem to treat functions that throw undefined the same way as functions that do not throw a value.

'use strict';

const assert = require('assert');

function foo() {
  throw undefined;
}

assert.throws(foo);

Expected behavior: assertion succeeds

Actual behavior: assertion fails

[bnoordhuis]

#18029

[BridgeAR]

As far as I see it, it was never really supported to do this. In Node.js < 8.3 all falsy values failed. Afterwards only undefined failed.