Deno FastWriter ✒

Fast & Safe file writing for Deno!

This utility has no dependencies, and is made to speed up overwriting the same file. It writes the last provided data only when previous data has been written. Also, the writing is atomic, so main file will not be corrupted in case of an emergency process exiting.

This library is heavily inspired by steno made by typicode. FastWriter uses same optimization techniques, but made specifically for Deno.

Example

import { FastWriter } from 'https://deno.land/x/fastwriter/mod.ts'

// Initialize writer
const writer = new FastWriter('./my-file.txt');

// Write data using this method
writer.write('Super-fast writing!');

Benchmarks

Operations	FastWriter	writeTextFile	writeTextFile (Without await)
1,000	< 1ms	1724ms	12ms
10,000	3ms	26372ms	89ms
100,000	16ms	∞	922ms

You can run benchmark.ts to check it by yourself!

License

MIT (see LICENSE file)