Added linter

.github/workflows/node.js.yml

@@ -0,0 +1,26 @@
+# CI workflow used for code quality checks
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs
+
+name: Node.js CI
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  lint:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v7
+    - name: Set up Node.js
+      uses: actions/setup-node@v6
+      with:
+        node-version: 24
+        cache: 'npm'
+    - run: npm ci
+    - run: npm run lint

.gitignore

@@ -2,7 +2,6 @@ node_modules
 pack
 out
 lib
-eslint.config.js
 *.railsl
 *.vsix
 *.jar

backend/customWords.txt

@@ -0,0 +1,12 @@
+blockly
+railblocks
+tokessa
+hamann
+heyden
+jucy
+freepik
+flaticon
+railsl
+ebnf
+editorsprache
+setzanweisungen

eslint.config.js

@@ -0,0 +1,27 @@
+import js from "@eslint/js";
+import globals from "globals";
+import { defineConfig } from "eslint/config";
+import cspellPlugin from '@cspell/eslint-plugin';
+
+const cspellImport = ['@cspell/dict-de-de'];
+
+export default defineConfig([
+  { files: ["**/*.{js,mjs,cjs}"], plugins: { js }, extends: ["js/recommended"], languageOptions: { globals: globals.browser } },
+  {
+		plugins: { '@cspell': cspellPlugin },
+		rules: {
+			"no-unused-vars": "warn",
+			"no-undef": "warn",
+			"eol-last": "error",
+			'@cspell/spellchecker': ['warn', { 
+				report: 'simple',  
+				cspell: {
+					language: 'en-GB, en-US, de', 
+					import: cspellImport,
+					caseSensitive: false,
+				},
+				customWordListFile: "./backend/customWords.txt", // add custom words, that spellchecker doesn't know
+			}], 
+		},
+	},
+]);

frontend/dynamic_blocks.js

@@ -228,7 +228,7 @@ Blockly.Blocks.TrackStatement = {
     valueInput.appendField(Blockly.Msg.RAILBLOCKS_TRACK_TEXT_END)
 
     // Now the block looks like this:
-    // ValueInput["Set track" [Comma seperated dropdown fields] "to: "] -<
+    // ValueInput["Set track" [Comma separated dropdown fields] "to: "] -<
   }
 }
 

frontend/fields.js

@@ -3,7 +3,8 @@
  *
  * https://github.com/kieler/RailBlocks
  *
- * Copyright 2025 by
+ * Copyright 2025-2026 by
+ *  + Tokessa Hamann
  *  + Henri Heyden and
  *  + Kiel University
  *    + Department of Computer Science
@@ -52,6 +53,7 @@ export class FieldPlusMinus extends Blockly.Field {
      * @param margin -- Ignored inherited parameter.
      * @private
      */
+  // eslint-disable-next-line no-unused-vars
   updateSize_ (margin) {
     this.size_ = new Blockly.utils.Size(10, 20)
   }
@@ -198,5 +200,6 @@ export class FieldPlusMinus extends Blockly.Field {
 
   getText () { return '' }
   getValue () {}
+  // eslint-disable-next-line no-unused-vars
   setValue (_0, _1) {}
 }

frontend/generator.js

@@ -81,11 +81,11 @@ generator.forBlock.LoopStatement = (block, gen) => {
 }
 
 // This one and the next are value inputs' inputs, which is why they look different.
-generator.forBlock.TrackStatementVectorStop = (block, gen) => {
+generator.forBlock.TrackStatementVectorStop = () => {
   return ['stop.', Order.ATOMIC]
 }
 
-generator.forBlock.TrackStatementVectorDir = (block, gen) => {
+generator.forBlock.TrackStatementVectorDir = (block) => {
   // Very hard to read.
   // "full" and "slow" are the two options, the field value is either "ITEM1" or "ITEM2".
   const SPEED = ['full', 'slow'][block.getFieldValue('SPEED')[4] - 1]