Fixes: https://github.com/nodejs/node/issues/22626

PR-URL: https://github.com/nodejs/node/pull/22709
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

This allows removing a number of special cases in other
parts of the code, at least one of which was incorrect
in expecting aligned input when that was not guaranteed.

Fixes: https://github.com/nodejs/node/issues/22358

PR-URL: https://github.com/nodejs/node/pull/22622
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

Partially backport an upstream commit that deprecates String::Concat
without the isolate parameter. This overload has already been removed
in V8 7.0.

PR-URL: https://github.com/nodejs/node/pull/22521
Refs: https://github.com/v8/v8/commit/8a011b57d8b26e9cfe1c20a2ef26adb14be6ecc2
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>

This change introduces CHECK_NULL and CHECK_NOT_NULL macros
similar to their definition in v8 and replaces instances of
CHECK/CHECK_EQ/CHECK_NE with these where it seems appropriate.

PR-URL: https://github.com/nodejs/node/pull/20914
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Implement string decoder in C++. The perks are a decent speed boost
(for decoding, whereas creation show some performance degradation),
that this can now be used more easily to add native decoding support
to C++ streams and (arguably) more readable variable names.

PR-URL: https://github.com/nodejs/node/pull/18537
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>