Meta: Publish the rendered spec for PRs

Author: gibson042

.github/workflows/build.yml

@@ -0,0 +1,23 @@
+name: Publish
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: '[node LTS] npm install'
+      uses: ljharb/actions/node/install@main
+      with:
+        node-version: lts/*
+    - run: npm run build
+    - name: publish to gh-pages
+      uses: JamesIves/[email protected]
+      with:
+        branch: gh-pages
+        folder: build
+        clean-exclude: |
+          pr

.github/workflows/deploy.yml

@@ -0,0 +1,31 @@
+name: Publish PR
+
+on: [pull_request]
+
+permissions:
+  contents: write
+  pages: write
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.pull_request }}
+    steps:
+    - uses: actions/checkout@v3
+    - name: '[node LTS] npm install'
+      uses: ljharb/actions/node/install@main
+      with:
+        node-version: lts/*
+    - run: npm run build
+    - name: publish to gh-pages
+      uses: JamesIves/[email protected]
+      with:
+        branch: gh-pages
+        folder: build
+        target-folder: pr/${{ github.event.number }}
+    - name: provide comment
+      uses: phulsechinmay/[email protected]
+      with:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        message: |
+          The rendered spec for this PR is available at https://tc39.es/${{ github.event.pull_request.base.repo.name }}/pr/${{ github.event.number }}.