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// @ts-nocheck
import fs from 'node:fs'
import os from 'node:os'
import path from 'node:path'
import { execSync } from 'node:child_process'
const rootDir = path.resolve(import.meta.dirname, '..')
const packagesDir = path.join(rootDir, 'packages')
const token = process.env.GH_TOKEN || process.env.GITHUB_TOKEN
const isPrerelease = process.argv.includes('--prerelease')
const isDryRun = process.argv.includes('--dry-run')
function run(command, options = {}) {
return execSync(command, {
cwd: rootDir,
encoding: 'utf8',
stdio: ['pipe', 'pipe', 'pipe'],
...options,
}).trim()
}
function maybeRun(command) {
try {
return run(command)
} catch {
return null
}
}
function getReleaseCommits() {
const output = maybeRun(
'git log --grep="ci: changeset release" --format=%H --no-merges',
)
if (!output) {
return []
}
return output.split('\n').filter(Boolean)
}
function getPreviousGitHubReleaseCommit() {
const output = maybeRun(
'git tag --list "v*" --list "release-*" --sort=-creatordate',
)
if (!output) {
return null
}
const [tag] = output
.split('\n')
.filter((candidate) => /^v\d+\.\d+\.\d+$/.test(candidate))
.concat(
output
.split('\n')
.filter((candidate) => candidate.startsWith('release-')),
)
if (!tag) {
return null
}
return maybeRun(`git rev-list -n 1 ${tag}`)
}
function getPackages() {
return fs
.readdirSync(packagesDir, { withFileTypes: true })
.filter((entry) => entry.isDirectory())
.map((entry) => {
const dir = entry.name
const packageJsonPath = path.join(packagesDir, dir, 'package.json')
const packageJson = JSON.parse(fs.readFileSync(packageJsonPath, 'utf8'))
return {
dir,
packageJsonPath,
packageJson,
}
})
.filter(({ packageJson }) => !packageJson.private)
}
function getPreviousPackageJson(releaseCommit, packageJsonPath) {
if (!releaseCommit) {
return null
}
const relativePath = path.relative(rootDir, packageJsonPath)
const content = maybeRun(`git show ${releaseCommit}:'${relativePath}'`)
if (!content) {
return null
}
return JSON.parse(content)
}
function getChangedPackages(previousReleaseCommit) {
return getPackages()
.map(({ dir, packageJsonPath, packageJson }) => {
const previousPackageJson = getPreviousPackageJson(
previousReleaseCommit,
packageJsonPath,
)
if (
!previousPackageJson ||
previousPackageJson.version !== packageJson.version
) {
return {
dir,
name: packageJson.name,
version: packageJson.version,
previousVersion: previousPackageJson?.version ?? null,
}
}
return null
})
.filter(Boolean)
.sort((left, right) => left.name.localeCompare(right.name))
}
function parseVersion(version) {
const match = version.match(/^(\d+)\.(\d+)\.(\d+)$/)
if (!match) {
return null
}
return match.slice(1).map(Number)
}
function compareVersions(leftVersion, rightVersion) {
const left = parseVersion(leftVersion)
const right = parseVersion(rightVersion)
if (!left || !right) {
return leftVersion.localeCompare(rightVersion)
}
for (let index = 0; index < left.length; index += 1) {
if (left[index] !== right[index]) {
return left[index] - right[index]
}
}
return 0
}
function isVersionInRange(version, previousVersion, currentVersion) {
if (compareVersions(version, currentVersion) > 0) {
return false
}
if (!previousVersion) {
return true
}
return compareVersions(version, previousVersion) > 0
}
function getChangelogSections(changelogPath, previousVersion, currentVersion) {
if (!fs.existsSync(changelogPath)) {
return []
}
const changelog = fs.readFileSync(changelogPath, 'utf8')
const sections = []
const headingPattern = /^## (\d+\.\d+\.\d+)\s*$/gm
const headings = Array.from(changelog.matchAll(headingPattern))
for (let index = 0; index < headings.length; index += 1) {
const heading = headings[index]
const version = heading[1]
if (!isVersionInRange(version, previousVersion, currentVersion)) {
continue
}
const nextHeading = headings[index + 1]
const bodyStart = changelog.indexOf('\n', heading.index)
const body = changelog.slice(bodyStart + 1, nextHeading?.index).trim()
sections.push({
version,
body: body || '- No changelog entries',
})
}
return sections
}
function buildReleaseNotes(changedPackages) {
const sections = changedPackages.map((pkg) => {
const changelogPath = path.join(packagesDir, pkg.dir, 'CHANGELOG.md')
const changelogSections = getChangelogSections(
changelogPath,
pkg.previousVersion,
pkg.version,
)
const content =
changelogSections
.map((section) => `### ${section.version}\n\n${section.body}`)
.join('\n\n') || '- No changelog entries'
return `#### ${pkg.name}\n\n${content}`
})
return sections.join('\n\n')
}
function createReleaseTag(changedPackages) {
const versions = [...new Set(changedPackages.map((pkg) => pkg.version))]
if (versions.length === 1) {
const version = versions[0]
return {
tag: `v${version}`,
title: `v${version}`,
}
}
const now = new Date().toISOString()
const tag = `release-${now.slice(0, 10)}-${now.slice(11, 13)}${now.slice(14, 16)}`
const title = `Release ${changedPackages
.map((pkg) => `${pkg.name}@${pkg.version}`)
.join(', ')}`
return { tag, title }
}
function createReleaseBody(title, changedPackages, notes) {
const packages = changedPackages
.map((pkg) => `- ${pkg.name}@${pkg.version}`)
.join('\n')
return `${title}\n\n## Changes\n\n${notes}\n\n## Packages\n\n${packages}`
}
function pushTag(tag) {
const exists = maybeRun(`git rev-parse ${tag}`)
if (exists) {
return false
}
run(`git tag -a ${tag} -m "${tag}"`)
run(`git push origin ${tag}`)
return true
}
function createGitHubRelease(tag, title, body) {
if (!token) {
throw new Error('Missing GH_TOKEN or GITHUB_TOKEN')
}
const notesFile = path.join(os.tmpdir(), `${tag}.md`)
fs.writeFileSync(notesFile, body)
const args = [
'gh',
'release',
'create',
tag,
'--title',
JSON.stringify(title),
'--notes-file',
JSON.stringify(notesFile),
]
if (isPrerelease) {
args.push('--prerelease')
} else {
args.push('--latest')
}
try {
execSync(args.join(' '), {
cwd: rootDir,
stdio: 'inherit',
env: {
...process.env,
GH_TOKEN: token,
GITHUB_TOKEN: token,
},
})
} finally {
fs.rmSync(notesFile, { force: true })
}
}
function rollbackTag(tag) {
maybeRun(`git push --delete origin ${tag}`)
maybeRun(`git tag -d ${tag}`)
}
function main() {
const [, previousReleaseCommit] = getReleaseCommits()
const changedPackages = getChangedPackages(
getPreviousGitHubReleaseCommit() || previousReleaseCommit,
)
if (changedPackages.length === 0) {
console.log('No changed packages found for GitHub release.')
return
}
const notes = buildReleaseNotes(changedPackages)
const { tag, title } = createReleaseTag(changedPackages)
const body = createReleaseBody(title, changedPackages, notes)
if (isDryRun) {
console.log(body)
return
}
let createdTag = false
try {
createdTag = pushTag(tag)
createGitHubRelease(tag, title, body)
} catch (error) {
if (createdTag) {
rollbackTag(tag)
}
throw error
}
}
main()