mirror of
https://github.com/vercel/next.js.git
synced 2026-09-20 02:25:18 +08:00
Hendrik Liebau
5c045fb2f4
This PR extracts the existing git change detection logic from the `get-changed-tests` script into a separate module. This allows reusing the same logic in the `run-for-change` script, ensuring consistent behavior across the two scripts to determine changed files. Specifically, this ensures that in stacked PRs, the docs-only change detection (and the test-only change detection in the upstack PR) works correctly by diffing against the appropriate base branch.
80 lines
2.4 KiB
JavaScript
80 lines
2.4 KiB
JavaScript
// @ts-check
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import fs from 'fs/promises'
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import { promisify } from 'util'
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import { exec as execOrig } from 'child_process'
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const exec = promisify(execOrig)
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/**
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* Gets git repository information from the environment
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* @returns {Promise<{branchName: string, remoteUrl: string, commitSha: string, isCanary: boolean}>}
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*/
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export async function getGitInfo() {
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let eventData = {}
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try {
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eventData =
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JSON.parse(
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await fs.readFile(process.env.GITHUB_EVENT_PATH || '', 'utf8')
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)['pull_request'] || {}
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} catch (_) {}
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const branchName =
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eventData?.head?.ref ||
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process.env.GITHUB_REF_NAME ||
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(await exec('git rev-parse --abbrev-ref HEAD')).stdout.trim()
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const remoteUrl =
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eventData?.head?.repo?.full_name ||
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process.env.GITHUB_REPOSITORY ||
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(await exec('git remote get-url origin')).stdout.trim()
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const commitSha =
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eventData?.head?.sha ||
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process.env.GITHUB_SHA ||
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(await exec('git rev-parse HEAD')).stdout.trim()
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const isCanary =
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branchName === 'canary' && remoteUrl.includes('vercel/next.js')
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return { branchName, remoteUrl, commitSha, isCanary }
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}
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/**
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* Determines the appropriate git diff revision based on the environment
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* @returns {Promise<string>} The git revision to diff against
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*/
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export async function getDiffRevision() {
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if (
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process.env.GITHUB_ACTIONS === 'true' &&
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process.env.GITHUB_EVENT_NAME === 'pull_request'
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) {
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// GH Actions for `pull_request` run on the merge commit so HEAD~1:
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// 1. includes all changes in the PR
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// e.g. in
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// A-B-C-main - F
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// \ /
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// D-E-branch
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// GH actions for `branch` runs on F, so a diff for HEAD~1 includes the diff of D and E combined
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// 2. Includes all changes of the commit for pushes
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return 'HEAD~1'
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} else {
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try {
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await exec('git remote set-branches --add origin canary')
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await exec('git fetch origin canary --depth=20')
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} catch (err) {
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const remoteInfo = await exec('git remote -v')
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console.error(remoteInfo.stdout)
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console.error(remoteInfo.stderr)
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console.error(`Failed to fetch origin/canary`, err)
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}
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// TODO: We should diff against the merge base with origin/canary not directly against origin/canary.
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// A --- B ---- origin/canary
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// \
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// \-- C ---- HEAD
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// `git diff origin/canary` includes B and C
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// But we should only include C.
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return 'origin/canary'
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}
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}
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