A Response body's stream gets a web ReadableStream view when a member the
fetch stream lacks is read (for example `body.tee`). The view's source holds
the stream, and the stream released the view only when that source was its
last holder. While the transfer runs it holds the stream too, so a dropped
body with a view kept a reference count of 2: the unobserved-response
discard never ran, the paused socket was never resumed, and a compressed
response dropped before HTTP EOF kept the process alive.
The stream now releases the view when only the view's source and the live
transfer hold it, and then takes the unobserved-response discard, as a
body without a view does.
The static-abandon-view fixture reads `body.tee` and `body.locked` of a
4 MiB incompressible gzip response from the new /gzip-incompressible route
and drops it. It hung until the test's timeout before this change and now
exits as Node does.
In TypeScript, tee(), pipeTo() and pipeThrough() on a ReadableStream were
refused with SC2020, and the WritableStream constructor and a
TransformStream with a transformer had no lowering, while JavaScript
programs reach all of them through the web stream classes
(scr_webstreams.c).
A TypeScript program that uses one of them now builds its ReadableStream,
WritableStream and TransformStream values with those classes, as
JavaScript does, and %main installs them, so a native stream such as a
Response body answers the three methods through its web view. A program
that uses only getReader(), cancel(), locked and the identity transform
keeps the native streams and builds to the same binary.
The fallback declarations gain UnderlyingSink and Transformer, the
WritableStream constructor takes a sink and the TransformStream
constructor a transformer and queuing strategies, and their controllers
map to checked-dynamic handles. The fetch profile lists the three methods
as static with the new static-web-streams fetch fixture as their
differential evidence, and keeps them in the set that links the classes.
The surface manifest is regenerated, and the surface-manifest probe that
kept tee() and pipeTo() fenced now fences values() and the async
iterator.
Adds the static-web-streams fixture and the corpus program
web-streams-typed-pipes.ts, with its corpus cost and order baseline.
Response.clone() and Request.clone() on a value typed Response or Request
were refused: in TypeScript the fallback declarations had no clone, and
the fetch profile listed both as unsupported, so the call compiled to an
SC2020 refusal, also in JavaScript where the checker types the value. The
checked-dynamic handles already implement them (the body tees, and the
clone gets a copy of the headers with the same guard), so typed calls now
dispatch to those implementations, as text() and json() do.
The declarations gain clone(), and the fetch profile lists both as static
methods with the new static-clone fetch fixture as their differential
evidence. The surface manifest is regenerated, and the surface-manifest
probes that kept clone fenced now fence blob() and formData().
Adds the static-clone fixture and corpus programs fetch-clone.ts and
fetch-clone-untyped.mjs, with their corpus costs and preflight/order
baselines.
`Response.json(data, init)` was refused (SC2020). It now builds a native
Response the way undici does: ResponseInit converts, the data serializes
through the checked-dynamic JSON serializer (toJSON hooks included;
TypeError "Value is not JSON serializable" when JSON.stringify answers
undefined), then the response initializes like the constructor with
"application/json" as the default content type, so status, statusText,
header, and null-body-status errors keep their order.
The fetch compatibility profile moves Response.json from unsupported to a
static operation with the static-response-json differential fixture.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Expand static compilation for common Effect 4 patterns
* Run every Effect 4 fixture slice in CI
* Preserve existing corpus behavior across Effect 4 lowering
* Preserve Effect platform callbacks and native stream state
* Record new corpus baselines and retain child stdin refusals
* Retire the obsolete stateful regex diagnostic
* Preserve promise reference count layout for cycle collection
- Support integer widths and clamped arrays with shared storage and exact runtime brands.
- Preserve typed-array values through untyped fields, iteration, and byte I/O.
- Compile native ArrayBuffer response bodies and checked Number predicates.
- Run production scope and closure capture logic with native TypeScript 7 symbols.
- Give lowering caches explicit pass ownership and stable symbol identities.
- Support reference collection arrays and optional Set seeds on both native backends.
* Lower AbortController for fetch cancellation
- Add static and dynamic lowering for construction, signal access, and abort calls
- Back controllers with native signal state shared by fetch
- Cover cancellation semantics across C, LLVM, diagnostics, and surface tests
Co-authored-by: sensei-woo <sensei-woo@users.noreply.github.com>
* Fix AbortController abort edge cases
* Fence AbortController method extraction
---------
Co-authored-by: sensei-woo <sensei-woo@users.noreply.github.com>
Chris Tate