chore: add github actions workflow config for windows (#3078)

* chore: add github actions workflow config

* fix: use npm ci, npm run test

* chore: wee

* chore: this might be custom appveyor syntax

* chore: split funky commands into steps

* Try to fix line-break issue in Windows

* chore: skip test:leak on windows

* chore: remove appveyor.yml

* Align a little closer with Node example

See if this improves output

* Try to fix step description

* Remove obsolete workflow name

* Add workflow name again

* chore: tweak descriptions, rename workflow file, add node 6 comment

.github/workflows/node-windows.yml

@@ -0,0 +1,32 @@
+name: Node
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: windows-2019
+
+    strategy:
+      matrix:
+        node: [ '10', '6' ]
+
+    name: ${{ matrix.node }} (Windows)
+    steps:
+    - name: Configure git line-breaks
+      run: git config --global core.autocrlf false
+    - name: Checkout Commit
+      uses: actions/checkout@v1
+    - name: Setup Node
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node }}
+    - name: Check npm version
+      # This is only necessary until we dump Node 6
+      run: IF ${{ matrix.node }} LSS 8 npm i npm@5 -g
+    - name: Install dependencies
+      run: npm ci --ignore-scripts
+    - name: Run tests
+      run: npm test
+      env:
+        CI: true

package.json

@@ -32,7 +32,13 @@
     "test": "npm run test:all",
     "test:all": "npm run test:only && npm run test:typescript && npm run test:leak",
     "test:coverage": "nyc --reporter html mocha",
-    "test:leak": "npm i --silent --no-save weak@1 && node --expose-gc test/leak/index.js",
+    "test:leak": "cross-os test:leak:os",
+    "test:leak:os": {
+      "darwin": "npm run test:leak:nix",
+      "linux": "npm run test:leak:nix",
+      "win32": "echo 'Skipping test:leak on Windows'"
+    },
+    "test:leak:nix": "npm i --silent --no-save weak@1 && node --expose-gc test/leak/index.js",
     "test:only": "mocha",
     "test:quick": "mocha -b",
     "test:typescript": "tsc --noEmit -p test/typescript && tsc --noEmit",
@@ -73,6 +79,7 @@
     "codecov": "^3.5.0",
     "console-group": "^0.3.3",
     "core-js": "^3.2.1",
+    "cross-os": "^1.3.0",
     "date-time": "^3.1.0",
     "es5-shim": "^4.5.13",
     "es6-shim": "^0.35.5",