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stream: expose web streams globals, remove runtime experimental warning #42225
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Review requested:
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I think it's probably too soon and web-streams still aren't used enough "in the wild" to graduate. I think there are also a few open bugs like. #39756
@benjamingr yes, that was my understanding :) |
@benjamingr do you think it's too soon for stable status, for exposing as globals, or both? |
The stable status though that's just "we are giving users an API and telling them it's stable even though it isn't battle-tested and probably still has more bugs than other stable APIs". If we're OK with that then the API surface itself won't change (other than the spec itself changing). |
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I'm +1 in marking them as stable. I'm -1 as exposing them as globals. I guess is that these adds quite a bit of work to our bootstrap without significant win for our users.
I might be ok with some form of lazy-load but I'm unsure if it's possible.
I'd also add that our implementation is likely quite slow, so I'm unsure if we should promote their usage. Ref. nodejs/undici#1203.
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I was supposed to hit the request change button.
It hurts adoption. As an example,
I can confirm (from a quick benchmark so I won't share numbers). That can be added to documentation though. Web streams have immense value even if they are slower. Let users make the choice. |
@vweevers you quoted only half of the paragraph. In this PR, there are quite a number of files that would be loaded during the bootstrap of Node.js. Most users (currently) do not use those APIs so this loading cost is not well spent. |
If the lack of globals hurts adoption (that's debatable ofc) then there will be less users to justify the cost of globals. To be fair, there are other ways to increase adoption - for me it was @jasnell's talk at Node Congress about a standard library for JS. That talk pushed me to try out web streams, and the lack of globals was just a minor snag. Is there a plan to reduce the bootstrap cost (with snapshots?) or is it an indefinite blocker? |
Is it still true with snapshot? IIRC lazy loading has no upside (and has the downside of having more overhead), except to avoid circular dependencies.
It adds three, based on https://github.com/nodejs/node/pull/42225/files#diff-eeda4d549f43051fb9ffbc8286e838ebfd607bae681dfc55a76679e6705124f9. |
+1 for expose Stream as global. Reason 1: Reason 2: |
Benchmark CI: https://ci.nodejs.org/view/Node.js%20benchmark/job/benchmark-node-micro-benchmarks/1103/ No significant perf regression detected
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It would seem a bit odd to have |
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+1 to improved compatibility with browsers, and enabling more code that can run without modification in both environments. Especially since this doesn’t seem to entail any performance costs per #42225 (comment), I don’t see why we shouldn’t land this?
If these are loaded as part of the startup snapshot then there really shouldn't be much cost at all during bootstrap.
That's a separate issue that should not block them graduating from experimental. Yes, the performance can be improved and node.js streams are definitely still faster, but graduation from experimental should not be gated on that factor at all. |
@mcollina Can you clarify your position on this given the last comments? Adding the
tsc-agenda
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Yeah, I changed a bit my mind given the statement. |
I think we are also missing some fixes that might be semver-majory. |
@mcollina in terms of performance, I think we should have some sort of criteria for what qualifies as good enough to no longer be labeled as experimental in the docs. (If that's the only reason it's marked as experimental for now.) Overall, I'm -0 on removing the experimental warning if we actually don't believe the performance is good enough for production usage. Especially if we're making this global and this is an API that isn't Node specific, folks might just use it without even checking our documentation. It feels like we're relinquishing our responsibility for producing an easy-to-use runtime and pushing off that responsibility to the user. |
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That's exactly my intent. Most developers won't care about performance but just about Web compatibility. As for Web compatibility goes, I think our implementation is solid, possibly it needs some work (see #42225 (comment)). My take is that we need more feedback from people. Folks will not use it with the big warning in the console. |
+1 on making it global. -1 on graduating it. It's complex enough that it should remain experimental for a while, just in case |
I think that somewhat depends on the use-case. I would consider streams to be one of the main performance-sensitive pieces in Node.js but perhaps I'm mistaken. That said, IMO your undici-fetch story kinda highlights a similar concern. |
@mcollina does this look good to you now? |
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lgtm
Landed in 560cbc5 |
Notable Changes: Deprecations and Removals: - (SEMVER-MAJOR) fs: runtime deprecate string coercion in `fs.write`, `fs.writeFileSync` (Livia Medeiros) (#42607) - (SEMVER-MAJOR) dns: remove `dns.lookup` and `dnsPromises.lookup` options type coercion (Antoine du Hamel) (#41431) - (SEMVER-MAJOR) process: runtime deprecate multipleResolves (Benjamin Gruenbaum) (#41896) - (SEMVER-MAJOR) stream: remove thenable support (Robert Nagy) (#40773) - (SEMVER-MAJOR) tls: move tls.parseCertString to end-of-life (Tobias Nießen) (#41479) fetch (experimental): An experimental fetch API is available on the global scope by default. The implementation is based upon https://undici.nodejs.org/#/, an HTTP/1.1 client written for Node.js by contributors to the project. Through this addition, the following globals are made available: `fetch` , `FormData`, `Headers`, `Request`, `Response`. Disable this API with the `--no-experimental-fetch` command-line flag. Contributed by Michaël Zasso in #41811. HTTP Timeouts: `server.headersTimeout`, which limits the amount of time the parser will wait to receive the complete HTTP headers, is now set to `60000` (60 seconds) by default. `server.requestTimeout`, which sets the timeout value in milliseconds for receiving the entire request from the client, is now set to `300000` (5 minutes) by default. If these timeouts expire, the server responds with status 408 without forwarding the request to the request listener and then closes the connection. Both timeouts must be set to a non-zero value to protect against potential Denial-of-Service attacks in case the server is deployed without a reverse proxy in front. Contributed by Paolo Insogna in #41263. Test Runner module (experimental): The `node:test` module facilitates the creation of JavaScript tests that report results in TAP format. This module is only available under the `node:` scheme. Contributed by Colin Ihrig in #42325. Toolchain and Compiler Upgrades: - Prebuilt binaries for Linux are now built on Red Hat Enterprise Linux (RHEL) 8 and are compatible with Linux distributions based on glibc 2.28 or later, for example, Debian 10, RHEL 8, Ubuntu 20.04. - Prebuilt binaries for macOS now require macOS 10.15 or later. - For AIX the minimum supported architecture has been raised from Power 7 to Power 8. Prebuilt binaries for 32-bit Windows will initially not be available due to issues building the V8 dependency in Node.js. We hope to restore 32-bit Windows binaries for Node.js 18 with a future V8 update. Node.js does not support running on operating systems that are no longer supported by their vendor. For operating systems where their vendor has planned to end support earlier than April 2025, such as Windows 8.1 (January 2023) and Windows Server 2012 R2 (October 2023), support for Node.js 18 will end at the earlier date. Full details about the supported toolchains and compilers are documented in the Node.js `BUILDING.md` file. Contributed by Richard Lau in #42292, #42604 and #42659 , and Michaël Zasso in #42105 and #42666. V8 10.1: The V8 engine is updated to version 10.1, which is part of Chromium 101. Compared to the version included in Node.js 17.9.0, the following new features are included: - The `findLast` and `findLastIndex` array methods. - Improvements to the `Intl.Locale` API. - The `Intl.supportedValuesOf` function. - Improved performance of class fields and private class methods (the initialization of them is now as fast as ordinary property stores). The data format returned by the serialization API (`v8.serialize(value)`) has changed, and cannot be deserialized by earlier versions of Node.js. On the other hand, it is still possible to deserialize the previous format, as the API is backwards-compatible. Contributed by Michaël Zasso in #42657. Web Streams API (experimental): Node.js now exposes the experimental implementation of the Web Streams API on the global scope. This means the following APIs are now globally available: - `ReadableStream`, `ReadableStreamDefaultReader`, `ReadableStreamBYOBReader`, `ReadableStreamBYOBRequest`, `ReadableByteStreamController`, `ReadableStreamDefaultController`, `TransformStream`, `TransformStreamDefaultController`, `WritableStream`, `WritableStreamDefaultWriter`, `WritableStreamDefaultController`, `ByteLengthQueuingStrategy`, `CountQueuingStrategy`, `TextEncoderStream`, `TextDecoderStream`, `CompressionStream`, `DecompressionStream`. Contributed James Snell in #39062, and Antoine du Hamel in #42225. Other Notable Changes: - (SEMVER-MAJOR) buffer: expose Blob as a global (James M Snell) (#41270) - (SEMVER-MAJOR) child\_process: improve argument validation (Rich Trott) (#41305) - doc: add RafaelGSS to collaborators (RafaelGSS) (#42718) - (SEMVER-MAJOR) http: make TCP noDelay enabled by default (Paolo Insogna) (#42163) - (SEMVER-MAJOR) net: make `server.address()` return an integer for `family` (Antoine du Hamel) (#41431) - (SEMVER-MAJOR) worker: expose BroadcastChannel as a global (James M Snell) (#41271) - (SEMVER-MAJOR) worker: graduate BroadcastChannel to supported (James M Snell) (#41271) Semver-Major Commits: - (SEMVER-MAJOR) assert,util: compare RegExp.lastIndex while using deep equal checks (Ruben Bridgewater) (#41020) - (SEMVER-MAJOR) buffer: refactor `byteLength` to remove outdated optimizations (Rongjian Zhang) (#38545) - (SEMVER-MAJOR) buffer: expose Blob as a global (James M Snell) (#41270) - (SEMVER-MAJOR) buffer: graduate Blob from experimental (James M Snell) (#41270) - (SEMVER-MAJOR) build: make x86 Windows support temporarily experimental (Michaël Zasso) (#42666) - (SEMVER-MAJOR) build: bump macOS deployment target to 10.15 (Richard Lau) (#42292) - (SEMVER-MAJOR) build: downgrade Windows 8.1 and server 2012 R2 to experimental (Michaël Zasso) (#42105) - (SEMVER-MAJOR) child\_process: improve argument validation (Rich Trott) (#41305) - (SEMVER-MAJOR) cluster: make `kill` to be just `process.kill` (Bar Admoni) (#34312) - (SEMVER-MAJOR) crypto: cleanup validation (Mohammed Keyvanzadeh) (#39841) - (SEMVER-MAJOR) crypto: prettify othername in PrintGeneralName (Tobias Nießen) (#42123) - (SEMVER-MAJOR) crypto: fix X509Certificate toLegacyObject (Tobias Nießen) (#42124) - (SEMVER-MAJOR) crypto: use RFC2253 format in PrintGeneralName (Tobias Nießen) (#42002) - (SEMVER-MAJOR) crypto: change default check(Host|Email) behavior (Tobias Nießen) (#41600) - (SEMVER-MAJOR) deps: V8: cherry-pick semver-major commits from 10.2 (Michaël Zasso) (#42657) - (SEMVER-MAJOR) deps: update V8 to 10.1.124.6 (Michaël Zasso) (#42657) - (SEMVER-MAJOR) deps: update V8 to 9.8.177.9 (Michaël Zasso) (#41610) - (SEMVER-MAJOR) deps: update V8 to 9.7.106.18 (Michaël Zasso) (#40907) - (SEMVER-MAJOR) dns: remove `dns.lookup` and `dnsPromises.lookup` options type coercion (Antoine du Hamel) (#41431) - (SEMVER-MAJOR) doc: update minimum glibc requirements for Linux (Richard Lau) (#42659) - (SEMVER-MAJOR) doc: update AIX minimum supported arch (Richard Lau) (#42604) - (SEMVER-MAJOR) fs: runtime deprecate string coercion in `fs.write`, `fs.writeFileSync` (Livia Medeiros) (#42607) - (SEMVER-MAJOR) http: refactor headersTimeout and requestTimeout logic (Paolo Insogna) (#41263) - (SEMVER-MAJOR) http: make TCP noDelay enabled by default (Paolo Insogna) (#42163) - (SEMVER-MAJOR) lib: enable fetch by default (Michaël Zasso) (#41811) - (SEMVER-MAJOR) lib: replace validator and error (Mohammed Keyvanzadeh) (#41678) - (SEMVER-MAJOR) module,repl: support 'node:'-only core modules (Colin Ihrig) (#42325) - (SEMVER-MAJOR) net: make `server.address()` return an integer for `family` (Antoine du Hamel) (#41431) - (SEMVER-MAJOR) process: disallow some uses of Object.defineProperty() on process.env (Himself65) (#28006) - (SEMVER-MAJOR) process: runtime deprecate multipleResolves (Benjamin Gruenbaum) (#41896) - (SEMVER-MAJOR) readline: fix question still called after closed (Xuguang Mei) (#42464) - (SEMVER-MAJOR) stream: remove thenable support (Robert Nagy) (#40773) - (SEMVER-MAJOR) stream: expose web streams globals, remove runtime experimental warning (Antoine du Hamel) (#42225) - (SEMVER-MAJOR) stream: need to cleanup event listeners if last stream is readable (Xuguang Mei) (#41954) - (SEMVER-MAJOR) stream: revert revert `map` spec compliance (Benjamin Gruenbaum) (#41933) - (SEMVER-MAJOR) stream: throw invalid arg type from End Of Stream (Jithil P Ponnan) (#41766) - (SEMVER-MAJOR) stream: don't emit finish after destroy (Robert Nagy) (#40852) - (SEMVER-MAJOR) stream: add errored and closed props (Robert Nagy) (#40696) - (SEMVER-MAJOR) test: add initial test module (Colin Ihrig) (#42325) - (SEMVER-MAJOR) timers: refactor internal classes to ES2015 syntax (Rabbit) (#37408) - (SEMVER-MAJOR) tls: represent registeredID numerically always (Tobias Nießen) (#41561) - (SEMVER-MAJOR) tls: move tls.parseCertString to end-of-life (Tobias Nießen) (#41479) - (SEMVER-MAJOR) url: throw on NULL in IPv6 hostname (Rich Trott) (#42313) - (SEMVER-MAJOR) v8: make v8.writeHeapSnapshot() error codes consistent (Darshan Sen) (#42577) - (SEMVER-MAJOR) v8: make writeHeapSnapshot throw if fopen fails (Antonio Román) (#41373) - (SEMVER-MAJOR) worker: expose BroadcastChannel as a global (James M Snell) (#41271) - (SEMVER-MAJOR) worker: graduate BroadcastChannel to supported (James M Snell) (#41271) PR-URL: #42262
Notable Changes: Deprecations and Removals: - (SEMVER-MAJOR) fs: runtime deprecate string coercion in `fs.write`, `fs.writeFileSync` (Livia Medeiros) (#42607) - (SEMVER-MAJOR) dns: remove `dns.lookup` and `dnsPromises.lookup` options type coercion (Antoine du Hamel) (#41431) - (SEMVER-MAJOR) process: runtime deprecate multipleResolves (Benjamin Gruenbaum) (#41896) - (SEMVER-MAJOR) stream: remove thenable support (Robert Nagy) (#40773) - (SEMVER-MAJOR) tls: move tls.parseCertString to end-of-life (Tobias Nießen) (#41479) fetch (experimental): An experimental fetch API is available on the global scope by default. The implementation is based upon https://undici.nodejs.org/#/, an HTTP/1.1 client written for Node.js by contributors to the project. Through this addition, the following globals are made available: `fetch` , `FormData`, `Headers`, `Request`, `Response`. Disable this API with the `--no-experimental-fetch` command-line flag. Contributed by Michaël Zasso in #41811. HTTP Timeouts: `server.headersTimeout`, which limits the amount of time the parser will wait to receive the complete HTTP headers, is now set to `60000` (60 seconds) by default. `server.requestTimeout`, which sets the timeout value in milliseconds for receiving the entire request from the client, is now set to `300000` (5 minutes) by default. If these timeouts expire, the server responds with status 408 without forwarding the request to the request listener and then closes the connection. Both timeouts must be set to a non-zero value to protect against potential Denial-of-Service attacks in case the server is deployed without a reverse proxy in front. Contributed by Paolo Insogna in #41263. Test Runner module (experimental): The `node:test` module facilitates the creation of JavaScript tests that report results in TAP format. This module is only available under the `node:` scheme. Contributed by Colin Ihrig in #42325. Toolchain and Compiler Upgrades: - Prebuilt binaries for Linux are now built on Red Hat Enterprise Linux (RHEL) 8 and are compatible with Linux distributions based on glibc 2.28 or later, for example, Debian 10, RHEL 8, Ubuntu 20.04. - Prebuilt binaries for macOS now require macOS 10.15 or later. - For AIX the minimum supported architecture has been raised from Power 7 to Power 8. Prebuilt binaries for 32-bit Windows will initially not be available due to issues building the V8 dependency in Node.js. We hope to restore 32-bit Windows binaries for Node.js 18 with a future V8 update. Node.js does not support running on operating systems that are no longer supported by their vendor. For operating systems where their vendor has planned to end support earlier than April 2025, such as Windows 8.1 (January 2023) and Windows Server 2012 R2 (October 2023), support for Node.js 18 will end at the earlier date. Full details about the supported toolchains and compilers are documented in the Node.js `BUILDING.md` file. Contributed by Richard Lau in #42292, #42604 and #42659 , and Michaël Zasso in #42105 and #42666. V8 10.1: The V8 engine is updated to version 10.1, which is part of Chromium 101. Compared to the version included in Node.js 17.9.0, the following new features are included: - The `findLast` and `findLastIndex` array methods. - Improvements to the `Intl.Locale` API. - The `Intl.supportedValuesOf` function. - Improved performance of class fields and private class methods (the initialization of them is now as fast as ordinary property stores). The data format returned by the serialization API (`v8.serialize(value)`) has changed, and cannot be deserialized by earlier versions of Node.js. On the other hand, it is still possible to deserialize the previous format, as the API is backwards-compatible. Contributed by Michaël Zasso in #42657. Web Streams API (experimental): Node.js now exposes the experimental implementation of the Web Streams API on the global scope. This means the following APIs are now globally available: - `ReadableStream`, `ReadableStreamDefaultReader`, `ReadableStreamBYOBReader`, `ReadableStreamBYOBRequest`, `ReadableByteStreamController`, `ReadableStreamDefaultController`, `TransformStream`, `TransformStreamDefaultController`, `WritableStream`, `WritableStreamDefaultWriter`, `WritableStreamDefaultController`, `ByteLengthQueuingStrategy`, `CountQueuingStrategy`, `TextEncoderStream`, `TextDecoderStream`, `CompressionStream`, `DecompressionStream`. Contributed James Snell in #39062, and Antoine du Hamel in #42225. Other Notable Changes: - (SEMVER-MAJOR) buffer: expose Blob as a global (James M Snell) (#41270) - (SEMVER-MAJOR) child\_process: improve argument validation (Rich Trott) (#41305) - doc: add RafaelGSS to collaborators (RafaelGSS) (#42718) - (SEMVER-MAJOR) http: make TCP noDelay enabled by default (Paolo Insogna) (#42163) - (SEMVER-MAJOR) net: make `server.address()` return an integer for `family` (Antoine du Hamel) (#41431) - (SEMVER-MAJOR) worker: expose BroadcastChannel as a global (James M Snell) (#41271) - (SEMVER-MAJOR) worker: graduate BroadcastChannel to supported (James M Snell) (#41271) Semver-Major Commits: - (SEMVER-MAJOR) assert,util: compare RegExp.lastIndex while using deep equal checks (Ruben Bridgewater) (#41020) - (SEMVER-MAJOR) buffer: refactor `byteLength` to remove outdated optimizations (Rongjian Zhang) (#38545) - (SEMVER-MAJOR) buffer: expose Blob as a global (James M Snell) (#41270) - (SEMVER-MAJOR) buffer: graduate Blob from experimental (James M Snell) (#41270) - (SEMVER-MAJOR) build: make x86 Windows support temporarily experimental (Michaël Zasso) (#42666) - (SEMVER-MAJOR) build: bump macOS deployment target to 10.15 (Richard Lau) (#42292) - (SEMVER-MAJOR) build: downgrade Windows 8.1 and server 2012 R2 to experimental (Michaël Zasso) (#42105) - (SEMVER-MAJOR) child\_process: improve argument validation (Rich Trott) (#41305) - (SEMVER-MAJOR) cluster: make `kill` to be just `process.kill` (Bar Admoni) (#34312) - (SEMVER-MAJOR) crypto: cleanup validation (Mohammed Keyvanzadeh) (#39841) - (SEMVER-MAJOR) crypto: prettify othername in PrintGeneralName (Tobias Nießen) (#42123) - (SEMVER-MAJOR) crypto: fix X509Certificate toLegacyObject (Tobias Nießen) (#42124) - (SEMVER-MAJOR) crypto: use RFC2253 format in PrintGeneralName (Tobias Nießen) (#42002) - (SEMVER-MAJOR) crypto: change default check(Host|Email) behavior (Tobias Nießen) (#41600) - (SEMVER-MAJOR) deps: V8: cherry-pick semver-major commits from 10.2 (Michaël Zasso) (#42657) - (SEMVER-MAJOR) deps: update V8 to 10.1.124.6 (Michaël Zasso) (#42657) - (SEMVER-MAJOR) deps: update V8 to 9.8.177.9 (Michaël Zasso) (#41610) - (SEMVER-MAJOR) deps: update V8 to 9.7.106.18 (Michaël Zasso) (#40907) - (SEMVER-MAJOR) dns: remove `dns.lookup` and `dnsPromises.lookup` options type coercion (Antoine du Hamel) (#41431) - (SEMVER-MAJOR) doc: update minimum glibc requirements for Linux (Richard Lau) (#42659) - (SEMVER-MAJOR) doc: update AIX minimum supported arch (Richard Lau) (#42604) - (SEMVER-MAJOR) fs: runtime deprecate string coercion in `fs.write`, `fs.writeFileSync` (Livia Medeiros) (#42607) - (SEMVER-MAJOR) http: refactor headersTimeout and requestTimeout logic (Paolo Insogna) (#41263) - (SEMVER-MAJOR) http: make TCP noDelay enabled by default (Paolo Insogna) (#42163) - (SEMVER-MAJOR) lib: enable fetch by default (Michaël Zasso) (#41811) - (SEMVER-MAJOR) lib: replace validator and error (Mohammed Keyvanzadeh) (#41678) - (SEMVER-MAJOR) module,repl: support 'node:'-only core modules (Colin Ihrig) (#42325) - (SEMVER-MAJOR) net: make `server.address()` return an integer for `family` (Antoine du Hamel) (#41431) - (SEMVER-MAJOR) process: disallow some uses of Object.defineProperty() on process.env (Himself65) (#28006) - (SEMVER-MAJOR) process: runtime deprecate multipleResolves (Benjamin Gruenbaum) (#41896) - (SEMVER-MAJOR) readline: fix question still called after closed (Xuguang Mei) (#42464) - (SEMVER-MAJOR) stream: remove thenable support (Robert Nagy) (#40773) - (SEMVER-MAJOR) stream: expose web streams globals, remove runtime experimental warning (Antoine du Hamel) (#42225) - (SEMVER-MAJOR) stream: need to cleanup event listeners if last stream is readable (Xuguang Mei) (#41954) - (SEMVER-MAJOR) stream: revert revert `map` spec compliance (Benjamin Gruenbaum) (#41933) - (SEMVER-MAJOR) stream: throw invalid arg type from End Of Stream (Jithil P Ponnan) (#41766) - (SEMVER-MAJOR) stream: don't emit finish after destroy (Robert Nagy) (#40852) - (SEMVER-MAJOR) stream: add errored and closed props (Robert Nagy) (#40696) - (SEMVER-MAJOR) test: add initial test module (Colin Ihrig) (#42325) - (SEMVER-MAJOR) timers: refactor internal classes to ES2015 syntax (Rabbit) (#37408) - (SEMVER-MAJOR) tls: represent registeredID numerically always (Tobias Nießen) (#41561) - (SEMVER-MAJOR) tls: move tls.parseCertString to end-of-life (Tobias Nießen) (#41479) - (SEMVER-MAJOR) url: throw on NULL in IPv6 hostname (Rich Trott) (#42313) - (SEMVER-MAJOR) v8: make v8.writeHeapSnapshot() error codes consistent (Darshan Sen) (#42577) - (SEMVER-MAJOR) v8: make writeHeapSnapshot throw if fopen fails (Antonio Román) (#41373) - (SEMVER-MAJOR) worker: expose BroadcastChannel as a global (James M Snell) (#41271) - (SEMVER-MAJOR) worker: graduate BroadcastChannel to supported (James M Snell) (#41271) PR-URL: #42262
PR-URL: nodejs#42225 Fixes: nodejs#40950 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Mestery <mestery@protonmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Notable Changes: Deprecations and Removals: - (SEMVER-MAJOR) fs: runtime deprecate string coercion in `fs.write`, `fs.writeFileSync` (Livia Medeiros) (nodejs#42607) - (SEMVER-MAJOR) dns: remove `dns.lookup` and `dnsPromises.lookup` options type coercion (Antoine du Hamel) (nodejs#41431) - (SEMVER-MAJOR) process: runtime deprecate multipleResolves (Benjamin Gruenbaum) (nodejs#41896) - (SEMVER-MAJOR) stream: remove thenable support (Robert Nagy) (nodejs#40773) - (SEMVER-MAJOR) tls: move tls.parseCertString to end-of-life (Tobias Nießen) (nodejs#41479) fetch (experimental): An experimental fetch API is available on the global scope by default. The implementation is based upon https://undici.nodejs.org/#/, an HTTP/1.1 client written for Node.js by contributors to the project. Through this addition, the following globals are made available: `fetch` , `FormData`, `Headers`, `Request`, `Response`. Disable this API with the `--no-experimental-fetch` command-line flag. Contributed by Michaël Zasso in nodejs#41811. HTTP Timeouts: `server.headersTimeout`, which limits the amount of time the parser will wait to receive the complete HTTP headers, is now set to `60000` (60 seconds) by default. `server.requestTimeout`, which sets the timeout value in milliseconds for receiving the entire request from the client, is now set to `300000` (5 minutes) by default. If these timeouts expire, the server responds with status 408 without forwarding the request to the request listener and then closes the connection. Both timeouts must be set to a non-zero value to protect against potential Denial-of-Service attacks in case the server is deployed without a reverse proxy in front. Contributed by Paolo Insogna in nodejs#41263. Test Runner module (experimental): The `node:test` module facilitates the creation of JavaScript tests that report results in TAP format. This module is only available under the `node:` scheme. Contributed by Colin Ihrig in nodejs#42325. Toolchain and Compiler Upgrades: - Prebuilt binaries for Linux are now built on Red Hat Enterprise Linux (RHEL) 8 and are compatible with Linux distributions based on glibc 2.28 or later, for example, Debian 10, RHEL 8, Ubuntu 20.04. - Prebuilt binaries for macOS now require macOS 10.15 or later. - For AIX the minimum supported architecture has been raised from Power 7 to Power 8. Prebuilt binaries for 32-bit Windows will initially not be available due to issues building the V8 dependency in Node.js. We hope to restore 32-bit Windows binaries for Node.js 18 with a future V8 update. Node.js does not support running on operating systems that are no longer supported by their vendor. For operating systems where their vendor has planned to end support earlier than April 2025, such as Windows 8.1 (January 2023) and Windows Server 2012 R2 (October 2023), support for Node.js 18 will end at the earlier date. Full details about the supported toolchains and compilers are documented in the Node.js `BUILDING.md` file. Contributed by Richard Lau in nodejs#42292, nodejs#42604 and nodejs#42659 , and Michaël Zasso in nodejs#42105 and nodejs#42666. V8 10.1: The V8 engine is updated to version 10.1, which is part of Chromium 101. Compared to the version included in Node.js 17.9.0, the following new features are included: - The `findLast` and `findLastIndex` array methods. - Improvements to the `Intl.Locale` API. - The `Intl.supportedValuesOf` function. - Improved performance of class fields and private class methods (the initialization of them is now as fast as ordinary property stores). The data format returned by the serialization API (`v8.serialize(value)`) has changed, and cannot be deserialized by earlier versions of Node.js. On the other hand, it is still possible to deserialize the previous format, as the API is backwards-compatible. Contributed by Michaël Zasso in nodejs#42657. Web Streams API (experimental): Node.js now exposes the experimental implementation of the Web Streams API on the global scope. This means the following APIs are now globally available: - `ReadableStream`, `ReadableStreamDefaultReader`, `ReadableStreamBYOBReader`, `ReadableStreamBYOBRequest`, `ReadableByteStreamController`, `ReadableStreamDefaultController`, `TransformStream`, `TransformStreamDefaultController`, `WritableStream`, `WritableStreamDefaultWriter`, `WritableStreamDefaultController`, `ByteLengthQueuingStrategy`, `CountQueuingStrategy`, `TextEncoderStream`, `TextDecoderStream`, `CompressionStream`, `DecompressionStream`. Contributed James Snell in nodejs#39062, and Antoine du Hamel in nodejs#42225. Other Notable Changes: - (SEMVER-MAJOR) buffer: expose Blob as a global (James M Snell) (nodejs#41270) - (SEMVER-MAJOR) child\_process: improve argument validation (Rich Trott) (nodejs#41305) - doc: add RafaelGSS to collaborators (RafaelGSS) (nodejs#42718) - (SEMVER-MAJOR) http: make TCP noDelay enabled by default (Paolo Insogna) (nodejs#42163) - (SEMVER-MAJOR) net: make `server.address()` return an integer for `family` (Antoine du Hamel) (nodejs#41431) - (SEMVER-MAJOR) worker: expose BroadcastChannel as a global (James M Snell) (nodejs#41271) - (SEMVER-MAJOR) worker: graduate BroadcastChannel to supported (James M Snell) (nodejs#41271) Semver-Major Commits: - (SEMVER-MAJOR) assert,util: compare RegExp.lastIndex while using deep equal checks (Ruben Bridgewater) (nodejs#41020) - (SEMVER-MAJOR) buffer: refactor `byteLength` to remove outdated optimizations (Rongjian Zhang) (nodejs#38545) - (SEMVER-MAJOR) buffer: expose Blob as a global (James M Snell) (nodejs#41270) - (SEMVER-MAJOR) buffer: graduate Blob from experimental (James M Snell) (nodejs#41270) - (SEMVER-MAJOR) build: make x86 Windows support temporarily experimental (Michaël Zasso) (nodejs#42666) - (SEMVER-MAJOR) build: bump macOS deployment target to 10.15 (Richard Lau) (nodejs#42292) - (SEMVER-MAJOR) build: downgrade Windows 8.1 and server 2012 R2 to experimental (Michaël Zasso) (nodejs#42105) - (SEMVER-MAJOR) child\_process: improve argument validation (Rich Trott) (nodejs#41305) - (SEMVER-MAJOR) cluster: make `kill` to be just `process.kill` (Bar Admoni) (nodejs#34312) - (SEMVER-MAJOR) crypto: cleanup validation (Mohammed Keyvanzadeh) (nodejs#39841) - (SEMVER-MAJOR) crypto: prettify othername in PrintGeneralName (Tobias Nießen) (nodejs#42123) - (SEMVER-MAJOR) crypto: fix X509Certificate toLegacyObject (Tobias Nießen) (nodejs#42124) - (SEMVER-MAJOR) crypto: use RFC2253 format in PrintGeneralName (Tobias Nießen) (nodejs#42002) - (SEMVER-MAJOR) crypto: change default check(Host|Email) behavior (Tobias Nießen) (nodejs#41600) - (SEMVER-MAJOR) deps: V8: cherry-pick semver-major commits from 10.2 (Michaël Zasso) (nodejs#42657) - (SEMVER-MAJOR) deps: update V8 to 10.1.124.6 (Michaël Zasso) (nodejs#42657) - (SEMVER-MAJOR) deps: update V8 to 9.8.177.9 (Michaël Zasso) (nodejs#41610) - (SEMVER-MAJOR) deps: update V8 to 9.7.106.18 (Michaël Zasso) (nodejs#40907) - (SEMVER-MAJOR) dns: remove `dns.lookup` and `dnsPromises.lookup` options type coercion (Antoine du Hamel) (nodejs#41431) - (SEMVER-MAJOR) doc: update minimum glibc requirements for Linux (Richard Lau) (nodejs#42659) - (SEMVER-MAJOR) doc: update AIX minimum supported arch (Richard Lau) (nodejs#42604) - (SEMVER-MAJOR) fs: runtime deprecate string coercion in `fs.write`, `fs.writeFileSync` (Livia Medeiros) (nodejs#42607) - (SEMVER-MAJOR) http: refactor headersTimeout and requestTimeout logic (Paolo Insogna) (nodejs#41263) - (SEMVER-MAJOR) http: make TCP noDelay enabled by default (Paolo Insogna) (nodejs#42163) - (SEMVER-MAJOR) lib: enable fetch by default (Michaël Zasso) (nodejs#41811) - (SEMVER-MAJOR) lib: replace validator and error (Mohammed Keyvanzadeh) (nodejs#41678) - (SEMVER-MAJOR) module,repl: support 'node:'-only core modules (Colin Ihrig) (nodejs#42325) - (SEMVER-MAJOR) net: make `server.address()` return an integer for `family` (Antoine du Hamel) (nodejs#41431) - (SEMVER-MAJOR) process: disallow some uses of Object.defineProperty() on process.env (Himself65) (nodejs#28006) - (SEMVER-MAJOR) process: runtime deprecate multipleResolves (Benjamin Gruenbaum) (nodejs#41896) - (SEMVER-MAJOR) readline: fix question still called after closed (Xuguang Mei) (nodejs#42464) - (SEMVER-MAJOR) stream: remove thenable support (Robert Nagy) (nodejs#40773) - (SEMVER-MAJOR) stream: expose web streams globals, remove runtime experimental warning (Antoine du Hamel) (nodejs#42225) - (SEMVER-MAJOR) stream: need to cleanup event listeners if last stream is readable (Xuguang Mei) (nodejs#41954) - (SEMVER-MAJOR) stream: revert revert `map` spec compliance (Benjamin Gruenbaum) (nodejs#41933) - (SEMVER-MAJOR) stream: throw invalid arg type from End Of Stream (Jithil P Ponnan) (nodejs#41766) - (SEMVER-MAJOR) stream: don't emit finish after destroy (Robert Nagy) (nodejs#40852) - (SEMVER-MAJOR) stream: add errored and closed props (Robert Nagy) (nodejs#40696) - (SEMVER-MAJOR) test: add initial test module (Colin Ihrig) (nodejs#42325) - (SEMVER-MAJOR) timers: refactor internal classes to ES2015 syntax (Rabbit) (nodejs#37408) - (SEMVER-MAJOR) tls: represent registeredID numerically always (Tobias Nießen) (nodejs#41561) - (SEMVER-MAJOR) tls: move tls.parseCertString to end-of-life (Tobias Nießen) (nodejs#41479) - (SEMVER-MAJOR) url: throw on NULL in IPv6 hostname (Rich Trott) (nodejs#42313) - (SEMVER-MAJOR) v8: make v8.writeHeapSnapshot() error codes consistent (Darshan Sen) (nodejs#42577) - (SEMVER-MAJOR) v8: make writeHeapSnapshot throw if fopen fails (Antonio Román) (nodejs#41373) - (SEMVER-MAJOR) worker: expose BroadcastChannel as a global (James M Snell) (nodejs#41271) - (SEMVER-MAJOR) worker: graduate BroadcastChannel to supported (James M Snell) (nodejs#41271) PR-URL: nodejs#42262
The web streams implementation seems to be quite stable, this PR propose to mark it as stable and to expose its class on the global object.
/cc @jasnell
Fixes: #40950