Use lint-staged to run prettier (#2947)

* Try out lint-staged

* Testing

* WIP

* Another attempt

* Another test

* Linting

* Fix a test file

* More tweaks

* More git hook tweaks

* Another tweak

* Ditto

* Linting fixes

Author: jeffposnick

.husky/.gitignore

@@ -0,0 +1 @@
+_

.husky/pre-commit

@@ -1,4 +1,8 @@
 #!/bin/sh
+
+# Please see https://typicode.github.io/husky/#/?id=command-not-found
+# if you have trouble running this command.
+
 . "$(dirname "$0")/_/husky.sh"
 
-npm run format-staged
+npm run lint-staged