I love that Deno has good, built-in CSV support

```ts

import { parse, stringify } from "https://deno.land/std@0.207.0/csv/mod.ts%22;

const recs = parse(Deno.readTextFileSync("input.csv"), { skipFirstRow: true });

recs[0].name = recs[0].name.toUpperCase();

Deno.writeTextFileSync("output.csv", { columns: Object.keys(recs[0]) });

```