feat: Add format check to validate script

[MichaelDeBoey]

Closes #64
Closes #65

[codecov]

Codecov Report

Merging #146 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #146   +/-   ##
=======================================
  Coverage   86.86%   86.86%           
=======================================
  Files          18       18           
  Lines         335      335           
  Branches       80       80           
=======================================
  Hits          291      291           
  Misses         36       36           
  Partials        8        8           

Impacted Files	Coverage Δ
src/scripts/validate.js	100.00% <ø> (ø)

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[kentcdodds]

Quick question.

[kentcdodds]

What happens when prettier is passed --write and --check at the same time?

Also, this kinda assumes that the format script is using something that accepts the --check flag (like kcd-scripts format which forwards the flags to prettier). So it probably does, but maybe we should note that in a code comment.

[MichaelDeBoey]

The test one also assumes there's a test script that accepts a --coverage flag, so I don't think we should mind the --check flag

Have to look into the code so we don't send the --write flag when checking I think.

[nickserv]

Haven't tested this but the code looks good

[nickserv]

Actually just noticed something. Is the script passed file paths to format? If not Prettier will fail and print usage, so you should add . to check all files.