Chore: enforce style rules with 'npm run fmt'

Author: coolaj86

.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+insert_final_newline = true
+end_of_line = lf

.github/workflows/test_and_release.yml

@@ -39,6 +39,9 @@ jobs:
       - name: Run jshint
         run: npm run jshint
 
+      - name: Run fmt
+        run: npm run fmt
+
       - name: Run tests
         run: npm run test
 

.jshintrc

@@ -8,35 +8,29 @@
   "esnext": true,
   "freeze": true,
   "immed": true,
-  "indent": 2,
   "latedef": true,
   "newcap": false,
   "noarg": true,
   "node": true,
   "noempty": true,
   "nonew": true,
-  "quotmark": "single",
   "regexp": true,
-  "smarttabs": false,
   "strict": true,
-  "trailing": true,
   "undef": true,
   "unused": true,
   "maxparams": 5,
   "maxstatements": 17,
   "maxcomplexity": 10,
   "maxdepth": 3,
-  "maxlen": 120,
-  "multistr": true,
   "predef": [
-  "after",
-  "afterEach",
-  "before",
-  "beforeEach",
-  "describe",
-  "exports",
-  "it",
-  "module",
-  "require"
+    "after",
+    "afterEach",
+    "before",
+    "beforeEach",
+    "describe",
+    "exports",
+    "it",
+    "module",
+    "require"
   ]
 }

.prettierrc.json

@@ -0,0 +1,3 @@
+{
+  "printWidth": 120
+}

package.json

@@ -31,6 +31,7 @@
   },
   "scripts": {
     "test": "mocha -R spec --recursive",
+    "fmt": "npx -p prettier@2.x -- prettier -w '**/*.{js,md}'",
     "regtest": "./regtest/regtest",
     "jshint": "jshint --reporter=node_modules/jshint-stylish ./lib",
     "coverage": "istanbul cover _mocha -- --recursive",