Chris Tate 1f7f029a05 Carry AsyncLocalStorage stores into timer, immediate, tick and microtask callbacks ...

AsyncLocalStorage changes, matching Node 24.22:

- setTimeout, setInterval, setImmediate, process.nextTick and
  queueMicrotask callbacks run with the stores that were active when they
  were scheduled. Before, getStore() returned undefined in them.
- An interval keeps that context on every tick, and a refreshed timer
  keeps it too.
- enterWith inside one of these callbacks lasts until the callback
  returns. An enterWith in top-level code ends when the main module's body
  returns, and one inside a callback scheduled with no store active ends
  when that callback returns, so the store does not reach callbacks that
  were scheduled without it.

Programs that enter stores (store.run, exit, enterWith, or a
diagnostics_channel store binding) schedule through new *_als runtime
entry points, which wrap a callback scheduled with a store active in a
closure that installs the stores around the call. The emitter picks them
from the new asyncContext runtime feature; other programs keep the plain
entry points, so their scheduling is unchanged.

The limitations page notes that completion callbacks of callback-style
I/O APIs still run with no store.

5815-als-callback-context compares the stores each kind of callback sees
with Node, plain and with SCRIPTC_SAN=1.

2026-10-18 22:26:09 -05:00

..

compatibility

Carry AsyncLocalStorage stores into timer, immediate, tick and microtask callbacks

2026-10-18 22:26:09 -05:00