yasumi/examples/basic/data-source.ts

import {DataSource} from '../../src/backend/data-source';

export const autoIncrement = async (dataSource: DataSource) => {
	const data = await dataSource.getMultiple() as Record<string, string>[];

	const highestId = data.reduce<number>(
		(highestId, d) => (Number(d.id) > highestId ? Number(d.id) : highestId),
		-Infinity
	);

	if (Number.isFinite(highestId)) {
		return (highestId + 1);
	}

	return 1;
};