Publish on npm.

Author: RubenVerborgh

.github/workflows/ci.yml

@@ -45,3 +45,23 @@ jobs:
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: .
+
+  npm:
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v2
+        with:
+          name: build
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 14.x
+      - name: Append commit hash to package version
+        run: 'sed -i -E "s/(\"version\": *\"[^\"]+)/\1-${GITHUB_SHA}/" package.json'
+      - name: Disable pre- and post-publish actions
+        run: 'sed -i -E "s/\"((pre|post)publish)/\"ignore:\1/" package.json'
+      - uses: rlespinasse/github-slug-action@v3.x
+      - uses: JS-DevTools/npm-publish@v1
+        with:
+          token: ${{ secrets.NPM_TOKEN }}
+          tag: ${{ env.GITHUB_REF_SLUG }}