It could be convenient to trace abnormal exit of the Node.js processes
that printing stacktrace on each `process.exit` call with a cli option.
This also takes effects on worker threads.

PR-URL: #30516
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>

Notable Changes:

* cli:
  * add --trace-exit cli option (legendecas)
    #30516
* http,https:
  * increase server headers timeout (Tim Costa)
    #30071
* readline:
  * update ansi-regex (Ruben Bridgewater)
    #30907
  * promote \_getCursorPos to public api (Jeremy Albright)
    #30687
* repl:
  * add completion preview (Ruben Bridgewater)
    #30907
* util:
  * add Set and map size to inspect output (Ruben Bridgewater)
    #30225
* wasi:
  * require CLI flag to require() wasi module (Colin Ihrig)
    #30963

PR-URL: #31010

Notable Changes:

* cli:
  * add --trace-exit cli option (legendecas)
    #30516
* http,https:
  * increase server headers timeout (Tim Costa)
    #30071
* readline:
  * update ansi-regex (Ruben Bridgewater)
    #30907
  * promote \_getCursorPos to public api (Jeremy Albright)
    #30687
* repl:
  * add completion preview (Ruben Bridgewater)
    #30907
* util:
  * add Set and map size to inspect output (Ruben Bridgewater)
    #30225
* wasi:
  * require CLI flag to require() wasi module (Colin Ihrig)
    #30963

PR-URL: #31010

It could be convenient to trace abnormal exit of the Node.js processes
that printing stacktrace on each `process.exit` call with a cli option.
This also takes effects on worker threads.

PR-URL: #30516
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>

It could be convenient to trace abnormal exit of the Node.js processes
that printing stacktrace on each `process.exit` call with a cli option.
This also takes effects on worker threads.

PR-URL: #30516
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>

Notable changes:

New assert APIs

The `assert` module now provides experimental `assert.match()` and
`assert.doesNotMatch()` methods. They will validate that the first argument is a
string and matches (or does not match) the provided regular expression

This is an experimental feature.

Ruben Bridgewater [#30929](#30929).

Advanced serialization for IPC

The `child_process` and `cluster` modules now support a `serialization` option
to change the serialization mechanism used for IPC. The option can have one of
two values:

* `'json'` (default): `JSON.stringify()` and `JSON.parse()` are used. This is
  how message serialization was done before.
* `'advanced'`: The serialization API of the `v8` module is used. It is based on
  the HTML structured clone algorithm.
  and is able to serialize more built-in JavaScript object types, such as
  `BigInt`, `Map`, `Set` etc. as well as circular data structures.

Anna Henningsen [#30162](#30162).

CLI flags

The new `--trace-exit` CLI flag makes Node.js print a stack trace whenever the
Node.js environment is exited proactively (i.e. by invoking the `process.exit()`
function or pressing Ctrl+C).

legendecas [#30516](#30516).

___

The new `--trace-uncaught` CLI flag makes Node.js print a stack trace at the
time of throwing uncaught exceptions, rather than at the creation of the `Error`
object, if there is any.
This option is not enabled by default because it may affect garbage collection
behavior negatively.

Anna Henningsen [#30025](#30025).

___

The `--disallow-code-generation-from-strings` V8 CLI flag is now whitelisted in
the `NODE_OPTIONS` environment variable.

Shelley Vohr [#30094](#30094).

New crypto APIs

For DSA and ECDSA, a new signature encoding is now supported in addition to the
existing one (DER). The `verify` and `sign` methods accept a `dsaEncoding`
option, which can have one of two values:

* `'der'` (default): DER-encoded ASN.1 signature structure encoding `(r, s)`.
* `'ieee-p1363'`: Signature format `r || s` as proposed in IEEE-P1363.

Tobias Nießen [#29292](#29292).

___

A new method was added to `Hash`: `Hash.prototype.copy`. It makes it possible to
clone the internal state of a `Hash` object into a new `Hash` object, allowing
to compute the digest between updates.

Ben Noordhuis [#29910](#29910).

Dependency updates

libuv was updated to 1.34.0. This includes fixes to `uv_fs_copyfile()` and
`uv_interface_addresses()` and adds two new functions: `uv_sleep()` and
`uv_fs_mkstemp()`.

Colin Ihrig [#30783](#30783).

___

V8 was updated to 7.8.279.23. This includes performance improvements to object
destructuring, RegExp match failures and WebAssembly startup time.
The official release notes are available at https://v8.dev/blog/v8-release-78.

Michaël Zasso [#30109](#30109).

New EventEmitter APIs

The new `EventEmitter.on` static method allows to async iterate over events.

Matteo Collina [#27994](#27994).

___

It is now possible to monitor `'error'` events on an `EventEmitter` without
consuming the emitted error by installing a listener using the symbol
`EventEmitter.errorMonitor`.

Gerhard Stoebich [#30932](#30932).

___

Using `async` functions with event handlers is problematic, because it
can lead to an unhandled rejection in case of a thrown exception.

The experimental `captureRejections` option in the `EventEmitter` constructor or
the global setting change this behavior, installing a
`.then(undefined, handler)` handler on the `Promise`. This handler routes the
exception asynchronously to the `Symbol.for('nodejs.rejection')` method if there
is one, or to the `'error'` event handler if there is none.

Setting `EventEmitter.captureRejections = true` will change the default for all
new instances of `EventEmitter`.

This is an experimental feature.

Matteo Collina [#27867](#27867).

Performance Hooks are no longer experimental

The `perf_hooks` module is now considered a stable API.

legendecas [#31101](#31101).

Introduction of experimental WebAssembly System Interface (WASI) support

A new core module, `wasi`, is introduced to provide an implementation of the
[WebAssembly System Interface](https://wasi.dev/) specification.
WASI gives sandboxed WebAssembly applications access to the
underlying operating system via a collection of POSIX-like functions.

This is an experimental feature.

Colin Ihrig [#30258](#30258).

PR-URL: #31691

Notable changes:

New assert APIs

The `assert` module now provides experimental `assert.match()` and
`assert.doesNotMatch()` methods. They will validate that the first argument is a
string and matches (or does not match) the provided regular expression

This is an experimental feature.

Ruben Bridgewater [#30929](#30929).

Advanced serialization for IPC

The `child_process` and `cluster` modules now support a `serialization` option
to change the serialization mechanism used for IPC. The option can have one of
two values:

* `'json'` (default): `JSON.stringify()` and `JSON.parse()` are used. This is
  how message serialization was done before.
* `'advanced'`: The serialization API of the `v8` module is used. It is based on
  the HTML structured clone algorithm.
  and is able to serialize more built-in JavaScript object types, such as
  `BigInt`, `Map`, `Set` etc. as well as circular data structures.

Anna Henningsen [#30162](#30162).

CLI flags

The new `--trace-exit` CLI flag makes Node.js print a stack trace whenever the
Node.js environment is exited proactively (i.e. by invoking the `process.exit()`
function or pressing Ctrl+C).

legendecas [#30516](#30516).

___

The new `--trace-uncaught` CLI flag makes Node.js print a stack trace at the
time of throwing uncaught exceptions, rather than at the creation of the `Error`
object, if there is any.
This option is not enabled by default because it may affect garbage collection
behavior negatively.

Anna Henningsen [#30025](#30025).

___

The `--disallow-code-generation-from-strings` V8 CLI flag is now whitelisted in
the `NODE_OPTIONS` environment variable.

Shelley Vohr [#30094](#30094).

New crypto APIs

For DSA and ECDSA, a new signature encoding is now supported in addition to the
existing one (DER). The `verify` and `sign` methods accept a `dsaEncoding`
option, which can have one of two values:

* `'der'` (default): DER-encoded ASN.1 signature structure encoding `(r, s)`.
* `'ieee-p1363'`: Signature format `r || s` as proposed in IEEE-P1363.

Tobias Nießen [#29292](#29292).

___

A new method was added to `Hash`: `Hash.prototype.copy`. It makes it possible to
clone the internal state of a `Hash` object into a new `Hash` object, allowing
to compute the digest between updates.

Ben Noordhuis [#29910](#29910).

Dependency updates

libuv was updated to 1.34.0. This includes fixes to `uv_fs_copyfile()` and
`uv_interface_addresses()` and adds two new functions: `uv_sleep()` and
`uv_fs_mkstemp()`.

Colin Ihrig [#30783](#30783).

___

V8 was updated to 7.8.279.23. This includes performance improvements to object
destructuring, RegExp match failures and WebAssembly startup time.
The official release notes are available at https://v8.dev/blog/v8-release-78.

Michaël Zasso [#30109](#30109).

New EventEmitter APIs

The new `EventEmitter.on` static method allows to async iterate over events.

Matteo Collina [#27994](#27994).

___

It is now possible to monitor `'error'` events on an `EventEmitter` without
consuming the emitted error by installing a listener using the symbol
`EventEmitter.errorMonitor`.

Gerhard Stoebich [#30932](#30932).

___

Using `async` functions with event handlers is problematic, because it
can lead to an unhandled rejection in case of a thrown exception.

The experimental `captureRejections` option in the `EventEmitter` constructor or
the global setting change this behavior, installing a
`.then(undefined, handler)` handler on the `Promise`. This handler routes the
exception asynchronously to the `Symbol.for('nodejs.rejection')` method if there
is one, or to the `'error'` event handler if there is none.

Setting `EventEmitter.captureRejections = true` will change the default for all
new instances of `EventEmitter`.

This is an experimental feature.

Matteo Collina [#27867](#27867).

Performance Hooks are no longer experimental

The `perf_hooks` module is now considered a stable API.

legendecas [#31101](#31101).

Introduction of experimental WebAssembly System Interface (WASI) support

A new core module, `wasi`, is introduced to provide an implementation of the
[WebAssembly System Interface](https://wasi.dev/) specification.
WASI gives sandboxed WebAssembly applications access to the
underlying operating system via a collection of POSIX-like functions.

This is an experimental feature.

Colin Ihrig [#30258](#30258).

PR-URL: #31691

PR-URL: #33769
Fixes: #30516
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

PR-URL: #33769
Fixes: #30516
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

PR-URL: #33769
Fixes: #30516
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

PR-URL: #33769
Fixes: #30516
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

PR-URL: #33769
Fixes: #30516
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>