Add onBeforeExit

[Vivalldi]

Hey @HiDeoo!
Hope all is going well. Just added this new feature. Would love to see this added

Cheers,
Vivalldi

[HiDeoo]

Hi, thanks for your PR :)

Indeed, that seems like a pretty nice addition. I haven't look at the code / tests yet but if you manage to fix them I'll review everything at once and merge the PR.

If you need help regarding the tests, let me know and I'll take a look tomorrow.

PS: The new callback would also need to be documented in the README like the other ones.

[Vivalldi]

Yeah I had realized that there we're checks after opening the pull. I'll be running through those shortly. Do you have a config file for prettier?

[HiDeoo]

No problem, and yes, the project was created a little bit before Prettier added support for .prettierrc and others config files and I never updated it with a proper config.

I'll make sure to add one before the next release, good call. In the meantime, you can find the options I used in the lint-staged configuration:

prettier --single-quote --trailing-comma es5 --print-width 120 --write

Or in the .eslintrc:

"prettier/prettier": [2, { printWidth: 120, singleQuote: true, trailingComma: "es5" }],

[Vivalldi]

Having some issues mocking the onBeforeExit function...