file-lines-stream

This package allows to read files line by line in both directions. It supports node stream and WebStream API

Basic usage

WebStream API

import { createForwardReadableStream } from "file-lines-stream/WebStream";

const stream = await createForwardReadableStream('file.txt');
stream.pipeTo(new WritableStream({ write: line => console.log(line) }));

import { createBackwardReadableStream } from "file-lines-stream/WebStream";

const stream = await createBackwardReadableStream('file.txt');
stream.pipeTo(new WritableStream({ write: line => console.log(line) }));

node stream

import { createForwardReadStream } from "file-lines-stream/stream";
import { Writable } from 'stream';

const stream = await createForwardReadStream('file.txt');
stream.pipe(new Writable({
  objectMode: true,
  write: (line, _, cb) => {
    console.log(line);
    cb();
  }
}));

import { createBackwardReadStream } from "file-lines-stream/stream";
import { Writable } from 'stream';

const stream = await createBackwardReadStream('file.txt');
stream.pipe(new Writable({
  objectMode: true,
  write: (line, _, cb) => {
    console.log(line);
    cb();
  }
}));