…74282)

Backports:
- #73900

Co-authored-by: Hendrik Liebau <mail@hendrik-liebau.de>

Backports:
- #71564
- #74154

---------

Co-authored-by: JJ Kasper <jj@jjsweb.site>

…74500)

Backports PR #74257 to 14.x

…4573)

This backports #74164 to leverage
built-in waitUntil if available instead of using the approach that keeps
the stream open until the waitUntil promise resolves.

x-ref: [slack
thread](https://vercel.slack.com/archives/C02K2HCH5V4/p1736211642221149?thread_ts=1734707275.666089&cid=C02K2HCH5V4)

Fixes #74062 (`jotai` ran into this error [when they added `"type":
"commonjs"` to their

package.json](pmndrs/jotai#2579 (reply in thread)))

> this is a bug in the transform we do when a `'use client'` directive
is encountered. I think what's happening is that we're creating a
virtual file that uses ESM import/export syntax, but it's called
proxy.js (not proxy.mjs), so the `"type": "commonjs" `makes turbopack
"correctly" upset at the ESM syntax.
#74062 (comment)

The (slightly kludgy) solution is to use `proxy.mjs` or `proxy.cjs` to
force the module format, bypassing the issue where `proxy.js` changes
meaning depending on `package.json#type`.

…) (#75870)

Backports:
- #75561
- #73482

---------

Co-authored-by: JJ Kasper <jj@jjsweb.site>

#75779)

Backports:
- #75766

Backports #77201 to v14 release
branch

Backports #77474 to v14