Use npm over yarn

Author: bash

.github/workflows/test.yml

@@ -16,14 +16,11 @@ jobs:
     - run: npm install -g yarn
 
     - name: Install Dependencies
-      run: yarn install
+      run: npm ci
     - name: Test
-      run: yarn test
-    - name: Check Code Style
-      run: yarn lint
-    - name: Lint .d.ts
-      run: yarn dtslint
-
+      run: npm run test
+    - name: Lint
+      run: npm run lint
     - name: Report Coverage
       uses: coverallsapp/github-action@v2
       with:

package.json

@@ -6,7 +6,7 @@
   "types": "index.d.ts",
   "scripts": {
     "test": "nyc --reporter=lcov mocha",
-    "lint": "standard index.js"
+    "lint": "standard index.js && dtslint"
   },
   "repository": {
     "type": "git",