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import * as _ from 'lodash';
import * as moment from 'moment';
import { Change, Changelog, VersionChangelog } from '../types';
const CHANGELOG_MD_HEADER = `
<!--
This file is auto-generated using the monorepo-scripts package. Don't edit directly.
Edit the package's CHANGELOG.json file only.
-->
CHANGELOG
`;
export const changelogUtils = {
getChangelogMdTitle(versionChangelog: VersionChangelog): string {
if (_.isUndefined(versionChangelog.timestamp)) {
throw new Error(
'All CHANGELOG.json entries must be updated to include a timestamp before generating their MD version',
);
}
const date = moment(`${versionChangelog.timestamp}`, 'X').format('MMMM D, YYYY');
const title = `\n## v${versionChangelog.version} - _${date}_\n\n`;
return title;
},
getChangelogMdChange(change: Change): string {
let line = ` * ${change.note}`;
if (!_.isUndefined(change.pr)) {
line += ` (#${change.pr})`;
}
return line;
},
generateChangelogMd(changelog: Changelog): string {
let changelogMd = CHANGELOG_MD_HEADER;
_.each(changelog, versionChangelog => {
const title = changelogUtils.getChangelogMdTitle(versionChangelog);
changelogMd += title;
const changelogVersionLines = _.map(
versionChangelog.changes,
changelogUtils.getChangelogMdChange.bind(changelogUtils),
);
changelogMd += `${_.join(changelogVersionLines, '\n')}`;
});
return changelogMd;
},
shouldAddNewChangelogEntry(currentVersion: string, changelog: Changelog): boolean {
if (_.isEmpty(changelog)) {
return true;
}
const lastEntry = changelog[0];
const isLastEntryCurrentVersion = lastEntry.version === currentVersion;
return isLastEntryCurrentVersion;
},
};
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