expected [Function] to throw 'RangeError' but 'RangeError' was thrown

[JBaczuk]

Case:

describe.only('reproduce RangeError bug', () => {
      it('should throw range error', () => {
        expect(() => {
          throw RangeError
        }).to.throw(RangeError)
      })
      it('should throw range error using constructor', () => {
        expect(() => {
          throw new RangeError('test')
        }).to.throw(RangeError)
      })
    })

Expected: both tests pass

Actual:

main tests (en-US)
    reproduce RangeError bug
      1) should throw range error
      ✓ should throw range error using constructor

  main tests (fr-CA)
    reproduce RangeError bug
      2) should throw range error
      ✓ should throw range error using constructor


  2 passing (26ms)
  2 failing

  1) main tests (en-US)
       reproduce RangeError bug
         should throw range error:

      AssertionError: expected [Function] to throw 'RangeError' but 'RangeError' was thrown
      + expected - actual


      at Context.<anonymous> (test/main.spec.ts:3:6840)
      at processImmediate (internal/timers.js:456:21)

  2) main tests (fr-CA)
       reproduce RangeError bug
         should throw range error:

      AssertionError: expected [Function] to throw 'RangeError' but 'RangeError' was thrown
      + expected - actual


      at Context.<anonymous> (test/main.spec.ts:3:6840)
      at processImmediate (internal/timers.js:456:21)

I see there is a check-error library, is it required in order to detect RangeErrors?

[JBaczuk]

Potential answer?

Right now Chai is designed as such that only subclasses of Error can be thrown. We believe this is how code should be written.

https://github.com/chaijs/chai/issues/1175#issuecomment-407477330