lux-framework/src/packages/database/utils/pending-migrations.js

Build scalable, Node.js-powered REST APIs with almost no code.

// @flow
import { readdir } from '../../fs';

/**
 * @private
 */
export default async function pendingMigrations(
  appPath: string,
  table: () => Object
): Promise<Array<string>> {
  const migrations: Array<string> = await readdir(`${appPath}/db/migrate`);
  const versions: Array<string> = await table()
      .select()
      .then(data => data.map(({ version }) => version));

  return migrations.filter(migration => versions.indexOf(
    migration.replace(/^(\d{16})-.+$/g, '$1')
  ) < 0);
}