Read large text files line by line synchronously.
npm install @marmooo/readlines-syncRead large text files line by line synchronously.
``
import { readLinesSync } from "https://raw.githubusercontent.com/marmooo/readlines-sync/main/mod.js";
const file = await Deno.open("FILE");
for (const line of readLinesSync(file)) {
console.log(line);
}
file.close();
`
1. install SudachiDict
2. deno bench --allow-read
`
cpu: Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz
runtime: deno 1.36.4 (x86_64-unknown-linux-gnu)
bench.js
benchmark time (avg) iter/s (min … max) p75 p99 p995
--------------------------------------------------------------------- -----------------------------
node:readline 1.34 s/iter 0.7 (1.29 s … 1.44 s) 1.36 s 1.44 s 1.44 s
npm:n-readlines 3.46 s/iter 0.3 (3.42 s … 3.56 s) 3.48 s 3.56 s 3.56 s
readLines 3.45 s/iter 0.3 (3.37 s … 3.51 s) 3.48 s 3.51 s 3.51 s
TextLineStream 2.16 s/iter 0.5 (2.14 s … 2.17 s) 2.17 s 2.17 s 2.17 s
split 1.11 s/iter 0.9 (1.1 s … 1.12 s) 1.11 s 1.12 s 1.12 s
sync1 713.78 ms/iter 1.4 (711.41 ms … 717.82 ms) 715.81 ms 717.82 ms 717.82 ms
sync2 710.79 ms/iter 1.4 (708.41 ms … 719.14 ms) 711.09 ms 719.14 ms 719.14 ms
readLinesSync 750 ms/iter 1.3 (748.78 ms … 751.63 ms) 750.44 ms 751.63 ms 751.63 ms
`
deno test --allow-read`
MIT