Speed up precommits (#2693)

* Speed up precommit hook by only checking staged files with eslint and using eslint cache

* Linting test

* Add rubocop cache to gitignore

* Try to speed up flow

.gitignore

@@ -95,3 +95,9 @@ artifacts/
 
 # GitGuardian cache file
 .cache_ggshield
+
+# Eslint cache
+.eslintcache
+
+# Rubocop cache
+**/tmp/rubocop_cache

.husky/pre-commit

@@ -13,8 +13,8 @@ else
   echo
 fi
 
-# Run lint and flow
-npm run lint:fix
+# Run lint on staged files and run flow
+npm run lint:staged:fix
 
 # Generate translations from strings.ftl
 npm run translate

.rubocop.yml

@@ -1,5 +1,8 @@
 AllCops:
   NewCops: enable
+  UseCache: true
+  CacheRootDirectory: tmp/rubocop_cache
+  MaxFilesInCache: 5000
 
 Layout/ArgumentAlignment:
   EnforcedStyle: with_fixed_indentation

package.json

@@ -15,6 +15,7 @@
     "test:memory": "jest --runInBand --logHeapUsage",
     "lint": "npm run lint:eslint && npm run lint:flow && npm run lint:rubocop",
     "lint:fix": "npm run lint:eslint:fix && npm run lint:flow && npm run lint:rubocop:fix",
+    "lint:staged:fix": "npx lint-staged",
     "lint:eslint": "eslint .",
     "lint:eslint:fix": "eslint . --fix",
     "lint:flow": "flow check",
@@ -203,5 +204,14 @@
   "engines": {
     "node": ">=18"
   },
-  "packageManager": "yarn@3.6.4"
-}
+  "packageManager": "yarn@3.6.4",
+  "lint-staged": {
+    "*.{js,jsx,ts,tsx}": [
+      "eslint --cache --fix --max-warnings=0 --cache-location .eslintcache",
+      "flow check --temp-dir=/tmp/flow --max-workers 4"
+    ],
+    "*.rb": [
+      "bundle exec rubocop --force-exclusion --parallel"
+    ]
+  }
+}