parse_csv.ts

import { CsvParseStream } from "https://deno.land/std@0.184.0/csv/csv_parse_stream.ts";

const file = await Deno.open("data.csv");
const stream = file.readable
  .pipeThrough(new TextDecoderStream("shift-jis"))
  .pipeThrough(new CsvParseStream());

for await (const record of stream) {
  console.log(record);
}