@typescript-eslint/switch-exhaustiveness-check: Make it stricter

Author: sindresorhus

.github/workflows/main.yml

@@ -14,8 +14,8 @@ jobs:
           - 14
           - 12
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm install

index.js

@@ -674,7 +674,13 @@ module.exports = {
 		// 	}
 		// ],
 
-		'@typescript-eslint/switch-exhaustiveness-check': 'error',
+		'@typescript-eslint/switch-exhaustiveness-check': [
+			'error',
+			{
+				allowDefaultCaseForExhaustiveSwitch: false,
+				requireDefaultForNonUnion: true
+			}
+		],
 		'@typescript-eslint/triple-slash-reference': [
 			'error',
 			{

package.json

@@ -10,6 +10,7 @@
 		"email": "[email protected]",
 		"url": "https://sindresorhus.com"
 	},
+	"sideEffects": false,
 	"engines": {
 		"node": ">=16"
 	},