Quickly convert TSV strings to JSON (note: does NOT support escaped tabs).

tsv2json.ts

const tsv2json = (tsv: string) => {
	const [cols, ...rows] = tsv.split('\n').map(line => line.split('\t'))

	return rows.map(row =>
		Object.fromEntries(row.map((cell, i) => [cols[i], cell])),
	)
}