add linter 💚

.eslintrc.json

@@ -0,0 +1,17 @@
+{
+	"extends": "eslint:recommended",
+	"env": {
+		"commonjs": true,
+		"es6": true,
+		"node": true
+	},
+	"parserOptions": {
+		"ecmaVersion": 2018
+	},
+	"ignorePatterns": [
+		"node_modules"
+	],
+	"rules": {
+		"no-unused-vars": "off"
+	}
+}

.github/workflows/docker-image.yml

@@ -15,6 +15,7 @@ jobs:
       with:
         node-version: 16.x
     - run: npm install
+    - run: npm run lint
     - run: npm test
   build-and-publish:
     name: build & publish Docker image

api.js

@@ -64,8 +64,8 @@ const modifyRoutes = (routes, hafas, config) => {
 }
 
 const config = {
-	hostname: process.env.HOSTNAME || 'localhost',
-	port: process.env.PORT ? parseInt(process.env.PORT) : 3000,
+	hostname: process.env.HOSTNAME || 'localhost',
+	port: process.env.PORT ? parseInt(process.env.PORT) : 3000,
 	name: pkg.name,
 	description: pkg.description,
 	homepage: pkg.homepage,

package.json

@@ -37,6 +37,7 @@
 	"devDependencies": {
 		"@derhuerst/technical-docs-cli": "^1.1.0",
 		"axios": "^0.26.1",
+		"eslint": "^8.12.0",
 		"get-port": "^5.1.1",
 		"pino-pretty": "^4.0.0",
 		"tap-min": "^2.0.0",
@@ -46,6 +47,7 @@
 		"docs": "node api-docs.js >docs/api.md && build-technical-doc --syntax-stylesheet-url /syntax.css <docs/readme.md >docs/index.html && build-technical-doc --syntax-stylesheet-url /syntax.css <docs/getting-started.md >docs/getting-started.html && build-technical-doc --syntax-stylesheet-url /syntax.css <docs/api.md >docs/api.html && build-technical-doc --syntax-stylesheet github >docs/syntax.css",
 		"build": "npm run docs",
 		"start": "node index.js",
+		"lint": "eslint .",
 		"test": "node test.js | tap-min"
 	}
 }