chore: add linting

.eslintignore

@@ -0,0 +1,7 @@
+node_modules
+coverage/
+dist
+stats.html
+src/generators/*/templates/**/*
+test/**/snapshots
+CHANGELOG.md

package.json

@@ -18,7 +18,9 @@
   },
   "scripts": {
     "build": "rm -rf dist && babel src --out-dir dist --copy-files --include-dotfiles",
-    "prepublishOnly": "npm run build && ../../scripts/insert-header.js",
+    "lint": "npm run lint:eslint && npm run lint:prettier",
+    "lint:eslint": "eslint --ext .ts,.js,.mjs,.cjs .",
+    "lint:prettier": "prettier \"**/*.{ts,js,mjs,cjs,md}\" --check --ignore-path .eslintignore",
     "start": "npm run build && node ./dist/create.js",
     "test": "npm run test:node",
     "test:node": "mocha --require @babel/register",
@@ -56,6 +58,13 @@
     "eslint": "^7.11.0",
     "eslint-config-prettier": "^6.13.0",
     "mocha": "^6.2.2",
-    "onchange": "^5.2.0"
+    "onchange": "^5.2.0",
+    "prettier": "^2.1.2"
+  },
+  "prettier": {
+    "singleQuote": true,
+    "arrowParens": "avoid",
+    "printWidth": 100,
+    "trailingComma": "all"
   }
 }

yarn.lock

@@ -3762,6 +3762,11 @@ prelude-ls@^1.2.1:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.2.1.tgz#debc6489d7a6e6b0e7611888cec880337d316396"
   integrity sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g==
 
+prettier@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.1.2.tgz#3050700dae2e4c8b67c4c3f666cdb8af405e1ce5"
+  integrity sha512-16c7K+x4qVlJg9rEbXl7HEGmQyZlG4R9AgP+oHKRMsMsuk8s+ATStlf1NpDqyBI1HpVyfjLOeMhH2LvuNvV5Vg==
+
 pretty-bytes@^5.3.0:
   version "5.4.1"
   resolved "https://registry.yarnpkg.com/pretty-bytes/-/pretty-bytes-5.4.1.tgz#cd89f79bbcef21e3d21eb0da68ffe93f803e884b"