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Fabrice Bellard 2024-01-13 11:16:02 +01:00
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19
Changelog
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@ -1,3 +1,22 @@
2024-01-13:
- top-level-await support in modules
- allow 'await' in the REPL
- added Array.prototype.{with,toReversed,toSpliced,toSorted} and
TypedArray.prototype.{with,toReversed,toSorted}
- added String.prototype.isWellFormed and String.prototype.toWellFormed
- added Object.groupBy and Map.groupBy
- added Promise.withResolvers
- class static block
- 'in' operator support for private fields
- optional chaining fixes
- added RegExp 'd' flag
- fixed RegExp zero length match logic
- fixed RegExp case insensitive flag
- added os.getpid() and os.now()
- added cosmopolitan build
- misc bug fixes
2023-12-09: 2023-12-09:
- added Object.hasOwn, {String|Array|TypedArray}.prototype.at, - added Object.hasOwn, {String|Array|TypedArray}.prototype.at,

2
VERSION
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2023-12-09 2024-01-13

31
doc/quickjs.texi
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@chapter Introduction @chapter Introduction
QuickJS is a small and embeddable Javascript engine. It supports the QuickJS is a small and embeddable Javascript engine. It supports most of the
ES2020 specification ES2023 specification
@footnote{@url{https://tc39.es/ecma262/}} @footnote{@url{https://tc39.es/ecma262/2023 }}
including modules, asynchronous generators, proxies and BigInt. including modules, asynchronous generators, proxies and BigInt.
It supports mathematical extensions such as big decimal float float It supports mathematical extensions such as big decimal float float
@ -34,14 +34,14 @@ and operator overloading.
@item Small and easily embeddable: just a few C files, no external dependency, 210 KiB of x86 code for a simple ``hello world'' program. @item Small and easily embeddable: just a few C files, no external dependency, 210 KiB of x86 code for a simple ``hello world'' program.
@item Fast interpreter with very low startup time: runs the 69000 tests of the ECMAScript Test Suite@footnote{@url{https://github.com/tc39/test262}} in about 95 seconds on a single core of a desktop PC. The complete life cycle of a runtime instance completes in less than 300 microseconds. @item Fast interpreter with very low startup time: runs the 77000 tests of the ECMAScript Test Suite@footnote{@url{https://github.com/tc39/test262}} in less than 2 minutes on a single core of a desktop PC. The complete life cycle of a runtime instance completes in less than 300 microseconds.
@item Almost complete ES2020 support including modules, asynchronous @item Almost complete ES2023 support including modules, asynchronous
generators and full Annex B support (legacy web compatibility). Many generators and full Annex B support (legacy web compatibility). Some
features from the upcoming ES2021 specification features from the upcoming ES2024 specification
@footnote{@url{https://tc39.github.io/ecma262/}} are also supported. @footnote{@url{https://tc39.es/ecma262/}} are also supported.
@item Passes nearly 100% of the ECMAScript Test Suite tests when selecting the ES2020 features. @item Passes nearly 100% of the ECMAScript Test Suite tests when selecting the ES2023 features.
@item Compile Javascript sources to executables with no external dependency. @item Compile Javascript sources to executables with no external dependency.
@ -270,9 +270,9 @@ about 100 seconds).
@section Language support @section Language support
@subsection ES2020 support @subsection ES2023 support
The ES2020 specification is almost fully supported including the Annex The ES2023 specification is almost fully supported including the Annex
B (legacy web compatibility) and the Unicode related features. B (legacy web compatibility) and the Unicode related features.
The following features are not supported yet: The following features are not supported yet:
@ -281,6 +281,10 @@ The following features are not supported yet:
@item Tail calls@footnote{We believe the current specification of tails calls is too complicated and presents limited practical interests.} @item Tail calls@footnote{We believe the current specification of tails calls is too complicated and presents limited practical interests.}
@item WeakRef and FinalizationRegistry objects
@item Symbols as WeakMap keys
@end itemize @end itemize
@subsection ECMA402 @subsection ECMA402
@ -1075,7 +1079,7 @@ stack holds the Javascript parameters and local variables.
@section RegExp @section RegExp
A specific regular expression engine was developed. It is both small A specific regular expression engine was developed. It is both small
and efficient and supports all the ES2020 features including the and efficient and supports all the ES2023 features including the
Unicode properties. As the Javascript compiler, it directly generates Unicode properties. As the Javascript compiler, it directly generates
bytecode without a parse tree. bytecode without a parse tree.
@ -1083,9 +1087,6 @@ Backtracking with an explicit stack is used so that there is no
recursion on the system stack. Simple quantifiers are specifically recursion on the system stack. Simple quantifiers are specifically
optimized to avoid recursions. optimized to avoid recursions.
Infinite recursions coming from quantifiers with empty terms are
avoided.
The full regexp library weights about 15 KiB (x86 code), excluding the The full regexp library weights about 15 KiB (x86 code), excluding the
Unicode library. Unicode library.