Move to ESM

Author: sindresorhus

.github/funding.yml

@@ -10,12 +10,10 @@ jobs:
       fail-fast: false
       matrix:
         node-version:
-          - 14
-          - 12
-          - 10
+          - 16
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm install

.github/workflows/main.yml

@@ -1,3 +1,2 @@
 node_modules
 yarn.lock
-dist/screenfull.test-d.ts