chore: Switch to pnpm, dependency clean-up & simpler eslint config. (#14)

* use previously unused variables.
* add tests for the utility types
* change unnecessary anys into unknowns
* update CI to use pnpm
* use corepack

Author: iwoplaza

.eslintrc.js

@@ -13,19 +13,23 @@ jobs:
 
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest]
-        node-version: [16.x, 20.x]
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [16.x, 20.x, 22.x]
 
     steps:
       - name: Checkout Code Repository
         uses: actions/checkout@v2
 
+      - uses: pnpm/action-setup@v4
+        name: Install pnpm
+        with:
+          run_install: false
+
       - name: Use Node.js ${{ matrix.node-version }} on ${{ matrix.os }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-          cache: 'npm'
+          cache: 'pnpm'
 
-      - run: npm ci
-      - run: npm run build --if-present
-      - run: npm test
+      - run: pnpm i --frozen-lockfile
+      - run: pnpm test

.github/workflows/coverage.yml

@@ -0,0 +1,12 @@
+// @ts-check
+
+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+
+export default tseslint.config(
+  eslint.configs.recommended,
+  ...tseslint.configs.recommended,
+  {
+    ignores: ['dist'],
+  },
+);

eslint.config.mjs

@@ -18,3 +18,5 @@ const dog: Dog = {
   age: 123,
   name: 'Spikey',
 };
+
+console.log(dog);

examples/dog/index.ts

@@ -16,3 +16,5 @@ const dog: Dog = {
   name: 'Sammy',
   age: 15,
 };
+
+console.log(dog);