add release.yml

Author: Rich-Harris

.github/workflows/release.yml

@@ -0,0 +1,44 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - main
+
+permissions: {}
+jobs:
+  release:
+    # prevents this action from running on forks
+    if: github.repository == 'sveltejs/esrap'
+    permissions:
+      contents: write # to create release (changesets/action)
+      id-token: write # OpenID Connect token needed for provenance
+      pull-requests: write # to create pull request (changesets/action)
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v4
+        with:
+          # This makes Actions fetch all Git history so that Changesets can generate changelogs with the correct commits
+          fetch-depth: 0
+      - uses: pnpm/action-setup@v4
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18.x
+          cache: pnpm
+
+      - name: Install
+        run: pnpm install --frozen-lockfile
+
+      - name: Build
+        run: pnpm build
+
+      - name: Create Release Pull Request or Publish to npm
+        id: changesets
+        uses: changesets/action@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NPM_CONFIG_PROVENANCE: true
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}