exadel-inc/esl

/**
 * Script to extract latest release notes from the CHANGELOG.md file
 */
// Abstract the version heading from the changelog
const VERSION_HEADING_REGEXP = /##? \[([^\]]+)]/gm
 
const fs = require('fs');
const path = require('path');
 
const {version} = require('../lerna.json');
const CHANGELOG_FILE = path.resolve(__dirname, '../CHANGELOG.md');
const RELEASE_NOTES_FILE = path.resolve(__dirname, '../RELEASE_NOTES.md');
 
const changelog = fs.readFileSync(CHANGELOG_FILE, 'utf8');
 
// Split changelog into versions
const versions = changelog.split(VERSION_HEADING_REGEXP);
 
const index = versions.indexOf(version);
if (index < 0 || index + 1 >= versions.length) {
  console.error(`No release notes found for current version ${version}`);
  process.exit(1);
}
 
// Extract the release notes for the latest version
const releaseNotes = (`# [${version}]` + versions[index + 1]).trim();
 
// Replace the release notes file with the latest release notes
fs.writeFileSync(RELEASE_NOTES_FILE, releaseNotes);