@esmj/size/utils/extractChangelog.mjs

JavaScript Package Size Cost like bundlephobia or import-cost

import fs from 'node:fs';
import path from 'node:path/posix';

const VERSION_RE = /#+ \[\d+\.\d+\.\d+\].+/gi;
const CHANGELOG = path.resolve(process.cwd(), 'CHANGELOG.md');

const changelogContents = fs.readFileSync(CHANGELOG, 'utf-8');
const versionChangelogs = changelogContents.split(VERSION_RE);
versionChangelogs.shift();

fs.writeFileSync(
  path.resolve(process.cwd(), 'current-changelog.txt'),
  versionChangelogs?.[0].trim() ?? '',
);