chore: setup 5.x auto release

.github/workflows/release.yml

@@ -0,0 +1,68 @@
+name: Create release
+
+on:
+  push:
+    branches:
+      - v5.x
+    paths:
+      - package.json
+
+permissions:
+  contents: read
+
+jobs:
+  check-release-version:
+    runs-on: ubuntu-latest
+    outputs:
+      release-version: ${{ steps.set-release-version.outputs.result }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/github-script@v7
+        id: set-release-version
+        with:
+          result-encoding: string
+          script: |
+            const { owner, repo } = context.repo
+            const version = require("./package.json").version
+            const versionTag = `v${version}`
+
+            const previousReleaseTag = await require('./scripts/release').previousReleaseTag({ github, context, versionTag })
+
+            if (versionTag !== previousReleaseTag) {
+              return versionTag
+            }
+
+  release:
+    runs-on: ubuntu-latest
+    needs: check-release-version
+    if: ${{ startsWith(needs.check-release-version.outputs.release-version, 'v') }}
+
+    permissions:
+      contents: write
+      id-token: write
+
+    environment: release
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          registry-url: 'https://registry.npmjs.org'
+      - run: npm install -g npm@latest
+      - run: npm install
+      - name: Create NPM release
+        run: npm publish --provenance --access public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+      - run: node scripts/generate-undici-types-package-json.js
+      - run: npm publish --provenance --access public
+        working-directory: './types'
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+      - name: Create GitHub release
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const versionTag = "${{ needs.check-release-version.outputs.release-version }}"
+            await require('./scripts/release').release({ github, context, versionTag })

scripts/release.js

@@ -0,0 +1,97 @@
+'use strict'
+
+// Called from .github/workflows
+
+// The following two variables should be updated per major version release branch (main, v5.x, etc)
+const VERSION_TAG_PREFIX = 'v5.'
+const BRANCH = 'v5.x'
+
+const getLatestRelease = async ({ github, owner, repo }) => {
+  for await (const { data } of github.paginate.iterator(
+    github.rest.repos.listReleases,
+    {
+      owner,
+      repo
+    }
+  )) {
+    const latestRelease = data.find((r) => r.tag_name.startsWith(VERSION_TAG_PREFIX))
+
+    if (latestRelease) {
+      return latestRelease
+    }
+  }
+
+  throw new Error(`Could not find latest release of ${VERSION_TAG_PREFIX}x`)
+}
+
+const generateReleaseNotes = async ({ github, owner, repo, versionTag }) => {
+  const previousRelease = await getLatestRelease({ github, owner, repo, versionTag })
+
+  const { data: { body } } = await github.rest.repos.generateReleaseNotes({
+    owner,
+    repo,
+    tag_name: versionTag,
+    target_commitish: `heads/${BRANCH}`,
+    previous_tag_name: previousRelease.tag_name
+  })
+
+  const bodyWithoutReleasePr = body.split('\n')
+    .filter((line) => !line.includes('[Release] v'))
+    .join('\n')
+
+  return bodyWithoutReleasePr
+}
+
+const generatePr = async ({ github, context, versionTag }) => {
+  const { owner, repo } = context.repo
+  const releaseNotes = await generateReleaseNotes({ github, owner, repo, versionTag })
+
+  await github.rest.pulls.create({
+    owner,
+    repo,
+    head: `release/${versionTag}`,
+    base: BRANCH,
+    title: `[Release] ${versionTag}`,
+    body: releaseNotes
+  })
+}
+
+const release = async ({ github, context, versionTag }) => {
+  const { owner, repo } = context.repo
+  const releaseNotes = await generateReleaseNotes({ github, owner, repo, versionTag })
+
+  await github.rest.repos.createRelease({
+    owner,
+    repo,
+    tag_name: versionTag,
+    target_commitish: `heads/${BRANCH}`,
+    name: versionTag,
+    body: releaseNotes,
+    draft: false,
+    prerelease: false,
+    generate_release_notes: false
+  })
+
+  try {
+    await github.rest.git.deleteRef({
+      owner,
+      repo,
+      ref: `heads/release/${versionTag}`
+    })
+  } catch (err) {
+    console.log("Couldn't delete release PR ref")
+    console.log(err)
+  }
+}
+
+const previousReleaseTag = async ({ github, context, versionTag }) => {
+  const { owner, repo } = context.repo
+  const previousRelease = await getLatestRelease({ github, owner, repo, versionTag })
+  return previousRelease.tag_name
+}
+
+module.exports = {
+  generatePr,
+  release,
+  previousReleaseTag
+}