Releases · sebastienros/jint

27 Jun 06:08

lahma

v3.1.4

a2bd553

v3.1.4 Latest

Latest

What's Changed

Backport fix ArrayInstance.CopyValues to handle holes correctly by @lahma in #1901
Backport update test262 suite and fix typed array issues by @lahma in #1903
Backport add interop option ThrowOnUnresolvedMember by @lahma in #1905

Full Changelog: v3.1.3...v3.1.4

Contributors

lahma

Assets 2

15 Jun 18:13

lahma

v3.1.3

62b0243

v3.1.3

What's Changed

Fix BigInt arithmetic assignments by @lahma in #1891
Support creating NamespaceReference against empty namespace by @lahma in #1892
Expose construction capabilities with code for JsArrayBuffer by @lahma in #1893

Full Changelog: v3.1.2...v3.1.3

Contributors

lahma

Assets 2

25 May 08:05

lahma

v3.1.2

c42a63d

v3.1.2

What's Changed

Backport improve environment handling performance and cleanup API by @lahma in #1846
Fix string-indexing optimizations against custom strings by @lahma in #1870

Full Changelog: v3.1.1...v3.1.2

Contributors

lahma

Assets 2

26 Apr 17:28

lahma

v3.1.1

f767670

v3.1.1

What's Changed

Backport var declaration and reference resolving performance improvements by @lahma in #1841
Backport improve System.Text.Json numeric type conversion under interop by @lahma in #1844

Full Changelog: v3.1.0...v3.1.1

Contributors

lahma

Assets 2

10 Apr 15:38

lahma

v3.1.0

ed7e3e7

v3.1.0

What's Changed

Prevent users from passing arbitrary parser options to Jint by @adams85 in #1831
Rename EsprimaExtensions to AstExtensions by @adams85 in #1832
Bump version to 3.1 by @lahma in #1833

Full Changelog: v3.0.2...v3.1.0

Contributors

lahma and adams85

Assets 2

05 Apr 15:45

lahma

v3.0.2

b6f99b9

v3.0.2

What's Changed

Try to initialize interop object members with upper and lower first char by @lahma in #1795
Remove Newtonsoft package by @MikeAlhayek in #1799
Improve STJ operability tests by @sebastienros in #1802
Add test code to validate boolean vlue in the if condition. by @hyzx86 in #1803
Obsolete and cleanup some ObjectInstance access patterns by @lahma in #1809
Create separate ObjectWrapper.Create factory method by @lahma in #1810
Add partial support for yield via experimental flag by @lahma in #1815
Use global usings and aliases for Esprima namespaces and types by @lahma in #1824
Add more Acornima friendly type aliases by @lahma in #1825
Support interop against System.Text.Json types on NET8+ by @lahma in #1826
Add support for wrapped lists to push and pop items by @ejsmith in #1822
Adding ArrayLikeWrapper to support more interop array operations by @ejsmith in #1828
Make task to promise wrapping an opt-in experimental feature by @lahma in #1830
UnwrapIfPromise Call RunAvailableContinuations by @scgm0 in #1813

New Contributors

@MikeAlhayek made their first contribution in #1799

Full Changelog: v3.0.1...v3.0.2

Contributors

lahma, ejsmith, and 4 other contributors

Assets 2

25 Feb 16:08

lahma

v3.0.1

895b8d4

v3.0.1

What's Changed

Update README and version prefix by @lahma in #1752
Fix module builder loader interaction by @tomatosalat0 in #1753
Use version suffix for MyGet publish by @lahma in #1754
Compile Regex instances in ScriptPreparation by @lahma in #1757
Fix Aot use enum by @scgm0 in #1760
Don't compile Regex instances containing negative lookahead by @lahma in #1761
Sync WIP generator structures to main by @lahma in #1762
Update GH actions/checkout to v4 by @lahma in #1763
Improve AOT usage scenarios with metadata by @lahma in #1764
Move interop tests to the public interface test project by @BhaaLseN in #1767
Change GH Actions for PR to run on macos-14 instead of macos-latest by @lahma in #1769
Json \u escape sequence was not case insensitive by @tomatosalat0 in #1770
Reset Jint.Benchmark project build properties by @lahma in #1774
Upgrade to Test262Harness 1.0.0 by @lahma in #1779
Ensure deterministic build for releases by @lahma in #1780
feat: implicit convert DataView and ArrayBuffer to byte array by @viceice in #1786
Add tasks to defaultobjectconverter by @tom-b-iodigital in #1787
Improve TypeDescriptor analysis logic by @lahma in #1788
Ensure modules have always source specified by @kkohno in #1791
Improve interop performance against CLR list types by @lahma in #1792

New Contributors

@scgm0 made their first contribution in #1760
@BhaaLseN made their first contribution in #1767
@tom-b-iodigital made their first contribution in #1787
@kkohno made their first contribution in #1791

Full Changelog: v3.0.0...v3.0.1

Contributors

lahma, BhaaLseN, and 5 other contributors

Assets 2

19 Jan 18:15

lahma

v3.0.0

6cfde52

v3.0.0

So v3 is finally here after some seven years of sweat and tears. A big thank you to everyone who helped by contributing new features, fixed and reported problems (you can see the huge list of contributors and their valuable work at the bottom of these release notes).

Jint is now arguably the most feature complete and standards compliant JavaScript engine running purely on top of .NET runtime. All the features listed as supported pass the ECMAScript standard suite for the feature flags. That's almost 60 000 passing tests on top of Jint's own test cases.

💡 If you are benefiting from Jint or otherwise would like to show your gratitude, don't forget to sponsor the project, even a one-time donation makes a difference.

We hope you'll like the new release 🚀

Features

ECMAScript

During v3 development a a huge set of both modern ECMAScript syntax and library features were completed, to name a few:

arrow functions
let and const support
class support
rest, spread and destructuring
template strings
modules
async/await
nullish coalescing and optional chaining (a ?? b and a?.b?.c)
library features like ArrayBuffer, BigInt, DataView, Map, Promise, Proxy, Reflect, Set

Unfortunately generator support and some corner cases for async/await support which will require some internal engine logic refactoring didn't make the cut and will be part of some later release.

You can always refer to the main README to see the state of supported features.

Interop

A lot of interop scenarios were improved and for example extensions methods can now accessed via JavaScript code. Plenty of bugs were fixed and interop performance was improved.

Performance

Performance was a big concern when re-writing the Jint internals. Jint is being heavily used in databases like RavenDB and EventStore where execution performance is crucial. We lowered memory traffic considerably and optimized the runtime in many ways. Generally one can say that Jint v3 is at least twice as fast if not multiple times faster than previous v2 on different workloads. There's also benchmark results comparing Jint to other alternatives available.

Here's results from two well-known test suites comparing v2 and v3.

BenchmarkDotNet v0.13.12, Windows 11 (10.0.23615.1000)
AMD Ryzen 9 5950X, 1 CPU, 32 logical and 16 physical cores
.NET SDK 8.0.100
  [Host]     : .NET 8.0.0 (8.0.23.53103), X64 RyuJIT AVX2
  DefaultJob : .NET 8.0.0 (8.0.23.53103), X64 RyuJIT AVX2

Dromaeo

Engine	FileName	Mean	Error	Allocated
v2	dromaeo-3d-cube	65.91 ms	0.455 ms	129.78 MB
v3		22.514 ms (-66%)	0.1484 ms	6284.46 KB (-95%)
v2	dromaeo-core-eval	14.11 ms	0.228 ms	49.55 MB
v3		4.186 ms (-70%)	0.0160 ms	311.57 KB (-99%)
v2	dromaeo-object-array	684.73 ms	1.320 ms	1698.01 MB
v3		44.332 ms (-94%)	0.2200 ms	100363.04 KB (-94%)
v2	droma(...)egexp [21]	1,593.67 ms	18.104 ms	1825.65 MB
v3		154.681 ms (-90%)	1.3777 ms	163817.22 KB (-91%)
v2	droma(...)tring [21]	1,427.76 ms	15.110 ms	17368.44 MB
v3		415.977 ms (-71%)	19.4907 ms	1321449.47 KB (-93%)
v2	droma(...)ase64 [21]	201.81 ms	1.183 ms	988.21 MB
v3		49.754 ms (-75%)	0.2706 ms	6045.42 KB (-99%)

SunSpider

Engine	FileName	Mean	Error	Allocated
v2	3d-cube	450.6 ms	1.97 ms	792.97 MB
v3		172.67 ms (-62%)	0.600 ms	45144.06 KB (-94%)
v2	3d-morph	492.0 ms	5.71 ms	678.52 MB
v3		150.45 ms (-69%)	0.424 ms	46255.62 KB (-93%)
v2	3d-raytrace	419.9 ms	2.95 ms	713.45 MB
v3		149.09 ms (-64%)	0.368 ms	86384.38 KB (-88%)
v2	access-binary-trees	168.1 ms	0.86 ms	310.48 MB
v3		80.74 ms (-52%)	0.074 ms	62246.13 KB (-80%)
v2	access-fannkuch	1,466.3 ms	12.18 ms	2981.09 MB
v3		373.35 ms (-75%)	0.494 ms	97.83 KB (-100%)
v2	access-nbody	380.5 ms	1.08 ms	595.76 MB
v3		167.46 ms (-56%)	0.466 ms	53285.7 KB (-91%)
v2	access-nsieve	537.9 ms	10.60 ms	995.61 MB
v3		134.59 ms (-75%)	0.171 ms	17140.71 KB (-98%)
v2	bitop(...)-byte [24]	288.3 ms	1.63 ms	523.8 MB
v3		134.42 ms (-53%)	0.511 ms	61947.89 KB (-88%)
v2	bitops-bits-in-byte	446.3 ms	3.46 ms	780.24 MB
v3		207.84 ms (-53%)	0.719 ms	40543.92 KB (-95%)
v2	bitops-bitwise-and	282.8 ms	2.62 ms	347.92 MB
v3		105.52 ms (-63%)	1.131 ms	55938.53 KB (-84%)
v2	bitops-nsieve-bits	594.0 ms	8.18 ms	1004.71 MB
v3		193.02 ms (-68%)	1.755 ms	53915 KB (-95%)
v2	contr(...)rsive [21]	233.6 ms	1.50 ms	526.25 MB
v3		98.93 ms (-58%)	0.613 ms	92772.26 KB (-83%)
v2	crypto-aes	455.7 ms	6.86 ms	968.64 MB
v3		121.08 ms (-73%)	1.201 ms	10756.26 KB (-99%)
v2	crypto-md5	236.3 ms	0.94 ms	427.65 MB
v3		95.99 ms (-59%)	0.531 ms	82152.38 KB (-81%)
v2	crypto-sha1	234.2 ms	0.84 ms	436.18 MB
v3		92.25 ms (-61%)	0.892 ms	68857.23 KB (-85%)
v2	date-format-tofte	300.9 ms	3.97 ms	560.51 MB
v3		95.31 ms (-68%)	1.891 ms	50129.5 KB (-91%)
v2	date-format-xparb	209.1 ms	0.77 ms	176.21 MB
v3		54.85 ms (-74%)	0.163 ms	26391.45 KB (-85%)
v2	math-cordic	652.8 ms	10.72 ms	1129.32 MB
v3		308.55 ms (-53%)	0.822 ms	86856.08 KB (-92%)
v2	math-partial-sums	208.6 ms	1.53 ms	247.64 MB
v3		103.45 ms (-50%)	0.154 ms	49364.48 KB (-81%)
v2	math-spectral-norm	288.0 ms	2.25 ms	501.69 MB
v3		115.15 ms (-60%)	0.205 ms	56614.34 KB (-89%)
v2	regexp-dna	103.3 ms	1.58 ms	20.14 MB
v3		117.40 ms (+14%)	0.548 ms	17610.08 KB (-15%)
v2	string-base64	278.1 ms	3.48 ms	1332.74 MB
v3		74.22 ms (-73%)	0.105 ms	8672.83 KB (-99%)
v2	string-fasta	387.8 ms	2.55 ms	755.15 MB
v3		159.71 ms (-59%)	0.459 ms	104781.26 KB (-86%)
v2	string-tagcloud	366.7 ms	25.90 ms	1035.44 MB
v3		70.38 ms (-81%)	0.245 ms	41768.32 KB (-96%)
v2	string-unpack-code	138.2 ms	1.67 ms	242.91 MB
v3		71.54 ms (-48%)	0.291 ms	73552.28 KB (-70%)
v2	strin(...)input [21]	1,113.3 ms	17.34 ms	6419.52 MB
v3		59.09 ms (-95%)	0.129 ms	20684.41 KB (-100%)

What's Changed

The full pull request list for v3.

Better error from scripts. by @ayende in #408
Allow host to handle unknown references by @ayende in #410
Implement TypeReference.HasInstance by @tylerjwatson in #422
Fix build on clean environment by @dkornaus in #425
Targeting netstandard 2.0 also by @sebastienros in #427
Fix class name typo by @jokin in #428
Fixing Date.getHours by @sebastienros in #432
Supporting big hex literal by @sebastienros in #435
padStart and padEnd #429 by @WestDiscGolf in #434
Convert Jint.Benchmark to use BenchmarkDotNet by @lahma in #445
Message may not be a string by @yinyue200 in #444
Missing support for String.prototype.startsWith by @WestDiscGolf in #441
Adding Symbol object by @sebastienros in #446
add more benchmarks by @lahma in #447
Cache common int to string conversions by @lahma in #449
Use struct for DiyFp by @lahma in #450
Optimize EvaluateMemberExpression when targeting static member by @lahma in #453
Cache common JsValue allocations by @lahma in #456
Make ObjectInstance MruPropertyCache2 dictionary lazy by @lahma in #454
Reduce memory allocations by @lahma in #452
Optimize array access and add ability to hint array size by @lahma in #455
Reduce string operations memory allocations by @lahma in #457
Optimize DeclarativeEnvironmentRecord by @lahma in #458
Fix issues with parsing knockout-3.4.0.js and lodash.min.js by @lahma in #460
Introduce IPropertyDescriptor and specialized descriptors by @lahma in #461
Fix string.split and array.join performance by @lahma in #462
Introduce JsString, JsBoolean etc and support efficient string concatenation by @lahma in #463
...