const { promisify } = require('util'); const exec = promisify(require('child_process').exec); const storybook = require('./storybook.js'); module.exports = { getHighlights }; async function getHighlights({ artifactBase }) { let highlights = ''; // here we assume the PR base branch ("target") is `develop` in lieu of doing // a query against the github api which requires an access token // see https://discuss.circleci.com/t/how-to-retrieve-a-pull-requests-base-branch-name-github/36911 const changedFiles = await getChangedFiles({ target: 'develop' }); console.log(`detected changed files vs develop:`); for (const filename of changedFiles) { console.log(` ${filename}`); } const announcement = await storybook.getHighlightAnnouncement({ changedFiles, artifactBase, }); if (announcement) { highlights += announcement; } return highlights; } async function getChangedFiles({ target }) { const { stdout } = await exec(`git diff --name-only ${target}...HEAD`); const changedFiles = stdout.split('\n').slice(0, -1); return changedFiles; }