I'll let this open for a while to see if there's any concern/objection to this

The yaml, archive, log and streams modules depend on this module. I think it's important that this PR includes moving these modules using web streams instead of io. It'll also validate the deprecation itself.

• yaml now doesn't depend on io BREAKING(yaml): change binary handling #3586
• io-dependent APIs of streams are now deprecated BREAKING(streams): deprecate APIs based on legacy Reader/Writer interfaces #3640
• log and archive will remain unstable ref

I think io is now ready to be deprecated

Hello,
The MDN link doesn't say concretely what to replace readLines() with for reading a file line by line like in the following code :

const file = await Deno.open(filePath, { read: true });
for await (const line of readLines(file)){
    console.log(line);
}
await file.close();

Help ?
Thanks

You should use file.readable, TextDecoderStream, and TextLineStream to read lines from a file.

import { TextLineStream } from "https://deno.land/std@0.214.0/streams/mod.ts";
const file = await Deno.open(filePath, { read: true });
const lines = file.readable
  .pipeThrough(new TextDecoderStream())
  .pipeThrough(new TextLineStream());
for await (const line of lines) {
  console.log(line);
}