Skip to content

stream: remove no longer necessary ComposeDuplex #40545

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 1 commit into from
Closed

stream: remove no longer necessary ComposeDuplex #40545

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
24 changes: 1 addition & 23 deletions lib/internal/streams/compose.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -16,28 +16,6 @@ const {
},
} = require('internal/errors');

// This is needed for pre node 17.
class ComposeDuplex extends Duplex {
constructor(options) {
super(options);

// https://github.com/nodejs/node/pull/34385

if (options?.readable === false) {
this._readableState.readable = false;
this._readableState.ended = true;
this._readableState.endEmitted = true;
}

if (options?.writable === false) {
this._writableState.writable = false;
this._writableState.ending = true;
this._writableState.ended = true;
this._writableState.finished = true;
}
}
}

module.exports = function compose(...streams) {
if (streams.length === 0) {
throw new ERR_MISSING_ARGS('streams');
Expand Down Expand Up @@ -107,7 +85,7 @@ module.exports = function compose(...streams) {
// TODO(ronag): Avoid double buffering.
// Implement Writable/Readable/Duplex traits.
// See, https://github.com/nodejs/node/pull/33515.
d = new ComposeDuplex({
d = new Duplex({
// TODO (ronag): highWaterMark?
writableObjectMode: !!head?.writableObjectMode,
readableObjectMode: !!tail?.writableObjectMode,
Expand Down