nef•7d ago

Possible to use CsvParseStream in Node.js

Hi, is it possible to use nodejs file streams with deno's stdlib?

import fs from "node:fs";
import { CsvParseStream } from "@std/csv";

fs.createReadStream("./data.csv")
  .pipe(new CsvParseStream()); // incompatible types

import fs from "node:fs";
import { CsvParseStream } from "@std/csv";

fs.createReadStream("./data.csv")
  .pipe(new CsvParseStream()); // incompatible types

5 Replies

nefOP•7d ago

as far as I can tell there's nothing in @std/path or @std/fs that opens a file I'm sure loading to a string is possible, but the file is fairly big

marvinh.•6d ago

There is no function to open a file in any of the @std packages, because that's already included in Deno itself, see https://docs.deno.com/examples/streaming_files/

nefOP•6d ago

yeah sorry I'm trying to use the libraries from node.js with jsr's node compatibility I'm still interested if it's possible but for now I'm using npm's csv-parse

marvinh.•6d ago

Right, in that case it's likely that you're running into the issue that Node by default uses NodeStreams (older API) and @std is written for WebStreams. In Node you can convert between the two, see https://nodejs.org/api/webstreams.html#nodejs-streams-interoperability

nefOP•6d ago

oooh that looks like it, thank you!

Possible to use CsvParseStream in Node.js

Did you find this page helpful?