faster-csv/dist/parser.js

Minimal dependency, fast CSV parser and formatter using modern Node.js APIs.

import { createReadStream } from "node:fs";
import { createInterface } from "node:readline";
export async function* parseCSV(filePath, { headers = true, separator = "," } = {}) {
    const stream = createReadStream(filePath, "utf-8");
    const rl = createInterface({ input: stream });
    let keys = null;
    for await (const line of rl) {
        const values = line.split(separator);
        if (headers && !keys) {
            keys = values;
        }
        else if (headers && keys) {
            const row = {};
            keys.forEach((k, i) => (row[k] = values[i] ?? ""));
            yield row;
        }
        else {
            yield values;
        }
    }
}