Run linter as part of Github action

.github/workflows/npm-test.yml

@@ -19,5 +19,6 @@ jobs:
     - run: npm install
     - run: npm run build --if-present
     - run: npm test
+    - run: npm run lint
       env:
         CI: true

package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "serve": "vue-cli-service serve",
     "build": "vue-cli-service build",
-    "lint": "vue-cli-service lint",
+    "lint": "vue-cli-service lint --max-warnings 0 --ignore-pattern=\"src/shims-vue.d.ts\"",
     "test": "jest"
   },
   "jest": {

src/game/SaveGame.ts

@@ -5,7 +5,7 @@ export interface SaveGame {
     score: number
 }
 
-export function saveGame(saveGame: SaveGame) {
+export function saveGame(saveGame: SaveGame): void {
     localStorage.setItem(saveGameKey, JSON.stringify(saveGame));
 }