Skip to content
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.

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

remove use of this with TextDecoder #348

Open
wants to merge 2 commits into
base: master
Choose a base branch
from

Conversation

tim-smart
Copy link

this fixes issues with ESM bundlers such as rollup

this fixes issues with ESM bundlers such as rollup
lib/utils.js Outdated
@@ -464,7 +464,7 @@ const decoders = {
if (typeof data === 'string')
data = Buffer.from(data, 'latin1');
try {
const decoder = new TextDecoder(this);
const decoder = new TextDecoder();
Copy link
Owner

@mscdex mscdex Oct 18, 2023

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

This isn't the correct change. Instead,

other: (data, hint) => {

should be:

other: function(data, hint) {

because of https://github.com/mscdex/busboy/pull/348/files#diff-5dfe38baf287dcf756a17c2dd63483781b53bf4b669e10efdd01e74bcd8e780aR416

Copy link
Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Hmm, maybe we can make that a bit clearer? Something like:

other: (charset) => (data, hint) =>

Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I think using bind() will lead to better efficiency as V8 should be able to optimize better rather than returning a completely "different" function every time.

Copy link
Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Yes, it requires a change to the call site (in getDecoder) as well (see the latest commit). If you feel it has other issues I can revert to using bind.

Copy link
Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Because I am curious: https://jsbench.me/1ilnv78d75/1

Looks like .bind has some overhead and slightly loses out, at least on my machine haha. V8 must do some clever things to optimize a repetitive function creation.

image

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

3 participants