added: types

Author: GianlucaGuarini

.github/workflows/test.yml

@@ -0,0 +1,26 @@
+name: test
+
+on:
+  push:
+    branches: [ main, dev ]
+  pull_request:
+    branches: [ main, dev ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [12.x, 14.x, 15.x, 16.x]
+        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Local Unit Test ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm ci
+      - run: npm test

.travis.yml

@@ -0,0 +1,4 @@
+type DOMElement = Window | Document | Element
+
+export default function domToArray<T extends DOMElement, R extends DOMElement[]>(els: T | T[]): R[];
+