Format docs with Prettier

[sapegin]

• Add script to package.json that will format Markdown files with Prettier.
• Run it as part of npm test

Config could be similar to https://github.com/sapegin/blog.sapegin.me/blob/master/.prettierrc

[UmenR]

Hey @sapegin I'd like to take this up! but before i start i have a question to ask. Im a tad new to this so if i want to run prettier as part of npm test i could add it to the end of the current test script with a semicolon right ? but doing so would mean that if jest failed prettier wont run either. Im assuming that's not an issue ? and this also means that currently there is no config file for prettier right ? 😄

[sapegin]

@UmenR Hey! Thanks for your interest, there’s a PR already: #709

There are two ways chain npm scripts:

1. Use &&: npm run test:jest && npm run format:md — in this case if Jest fails it won’t run Prettier.
2. Use pre* or post* scripts like pretest or posttest, you can find an example in our package.json.

[UmenR]

Oh did not see that PR 😄 Thanks for the response 👍