Make `toNotThrow` say what was thrown

[jackfranklin]

expect(() => foo()).toNotThrow

fails when foo throws, but it doesn't tell me what error foo threw. This would be really useful for debugging. I'm happy to make a PR :)

PS: I'm also happy to try to help out more if you need help with this module :)

[skovhus]

I think this is fixed in expect@21 (maintained by Jest). : )

[ljharb]

@jackfranklin thanks, that'd be a great addition to expect v1 (v21+ is now maintained by jest, but we'll still publish releases of 1.x)

[jcollum]

Is toNotThrow still available? I can't find it in the docs.

https://jestjs.io/docs/en/expect.html

[ljharb]

@jcollum those docs cover v21+. This repo is for < v21.