Add Prettier (#314)

- Add `.editorconfig` with prettier defaults
- Add `npm run lint:fix` for prettier autofixes
- Add `npm run lint:check` for checking
- Add `lint:fix` to CI run

.editorconfig

@@ -0,0 +1,7 @@
+[*]
+charset = utf-8
+insert_final_newline = true
+end_of_line = lf
+indent_style = space
+indent_size = 2
+max_line_length = 80

.github/workflows/test.yml

@@ -18,4 +18,6 @@ jobs:
           node-version: ${{ matrix.node-version }}
       - run: npm install
       - run: npm run build
+      - run: npm run check
+      # - run: npm run lint
       # - run: npm test

.prettierignore

@@ -0,0 +1 @@
+packages/web/public

package.json

@@ -8,7 +8,9 @@
   },
   "scripts": {
     "build": "lerna run build",
-    "check": "lerna run check"
+    "check": "lerna run check",
+    "lint": "prettier -c .",
+    "format": "prettier -w ."
   },
   "keywords": [
     "codemirror",
@@ -24,7 +26,8 @@
   },
   "homepage": "https://github.com/munshkr/flok#readme",
   "devDependencies": {
-    "lerna": "^6.5.1"
+    "lerna": "^6.5.1",
+    "prettier": "^3.4.2"
   },
   "workspaces": [
     "packages/*"