CHANGELOG

What's Changed

0.18.0 (2024-03-04)

Feature Enhancements

Format let-else expressions by @jedel1043 in #3102
Add regexp indices (d flag) support by @dirkdev98 in #3094
Add missing 'unscopables' to Array.prototype[@@unscopables] by @dirkdev98 in #3111
Updated Fuzzer dependencies and added them to Dependabot by @Razican in #3124
Implement findLast and findLastIndex on TypedArray by @dirkdev98 in #3135
Implement i128/u128 to JsBigInt conversions by @AlvinKuruvilla in #3129
Implement String.prototype.isWellFormed and String.prototype.toWellFormed by @raskad in #3187
Clarify usage section in README.md by @postmeback in #3092
Log traces even without message (boa_runtime) by @kelbazz in #3193
Implement ephemeron-based weak map by @jedel1043 in #3052
Improve bytecompiler bytecode generation. by @HalidOdat in #3188
Add Instruction and InstructionIterator by @HalidOdat in #3201
Add ECMAScript 14 to boa_tester by @jedel1043 in #3273
Bump rust-version to 1.71 by @jedel1043 in #3290
Lazily download test262 repository by @HalidOdat in #3214
Implement Gc::new_cyclic by @jedel1043 in #3292
Implement Intl.PluralRules by @jedel1043 in #3298
Implement step 5 in RegExp constructor by @HalidOdat in #3305
Replace #[deny] with #[warn] by @jedel1043 in #3309
Bump ICU4X to 1.3 by @jedel1043 in #3306
Migrate to workspace deps by @jedel1043 in #3313
Implement [[HostDefined]] field on Realms by @HalidOdat in #2952
Introduce experimental features by @jedel1043 in #3318
Introduce a Class map by @jedel1043 in #3315
Fix Function.prototype.toString() by @HalidOdat in #3374
First portion of the Temporal implementation by @nekevss in #3277
Update feature flags to specific feature flag by @nekevss in #3376
Implement [[HostDefined]] for Module and Script by @arexon in #3381
Implement synthetic modules by @jedel1043 in #3294
Prevent test262 repository update if not needed by @HalidOdat in #3386
Implement SharedArrayBuffer by @jedel1043 in #3384
Add Context::create_realm by @johnyob in #3369
Introduce a thread safe version of JsError by @jedel1043 in #3398
Implement asynchronous evaluation of scripts by @jedel1043 in #3044
Feature get/set $boa.limits.stack by @HalidOdat in #3385
Implement change-array-by-copy methods by @jedel1043 in #3412
Implement the array-grouping proposal by @jedel1043 in #3420
Implement Atomics builtin by @jedel1043 in #3394
Migrate to workspace lints by @jedel1043 in #3334
Bump ICU4X to 1.4 and finish Intl impls with new APIs by @jedel1043 in #3469
Class: Switch make_data parameter from this to new_target by @johnyob in #3478
Add utility methods to the Class trait by @jedel1043 in #3488
Simplify Icu API by @jedel1043 in #3503
Add UTF-16 input parsing by @raskad in #3538
Remove allocations from HostDefined::get_many_mut by @jedel1043 in #3606
Implement getter for ArrayBuffer data by @HalidOdat in #3610
Implement non-erased JsObjects by @jedel1043 in #3618
Update regress to v0.8.0 and use UTF16 / UCS2 matching by @raskad in #3627
Cleanup 262 tester and stabilize some experimental features by @jedel1043 in #3632
Improve typing of DataView and related objects by @jedel1043 in #3626
Close sync iterator when async wrapper yields rejection by @jedel1043 in #3633
Implement resizable buffers by @jedel1043 in #3634
Implement stage 3 feature "arraybuffer-transfer" by @jedel1043 in #3649
Implement prototype of NumberFormat by @jedel1043 in #3669
Add example for async module fetches by @jedel1043 in #3012
Js typed array methods by @AngeloChecked in #3481
Create tool to regenerate ABOUT.md by @jedel1043 in #3692
Implement RegExp v flag by @raskad in #3695

Bug Fixes

Allow escaped yield and await in labelled statement by @raskad in #3117
TypedArray.prototype.values() and TypedArray.prototype[@@iterator] should be equal by @HalidOdat in #3096
Fix TypedArrayConstructors tests by @raskad in #3171
Close iterator after generator return call while array destructuring assignment by @HalidOdat in #3164
Fix remaining TypedArray bugs by @raskad in #3186
Add early errors for LexicalDeclaration by @raskad in #3207
Fix switch statement break and continue return values by @raskad in #3205
Fix GitHub coverage workflow by @HalidOdat in #3288
Fix tagged template this in strict mode by @HalidOdat in #3307
fix: add 'static lifetime by @mattsse in #3297
Fix class inherit from null by @HalidOdat in #3312
Fix anonymous function name in cover assignment by @raskad in #3325
Add NonMaxU32 as integer variant for PropertyKey by @raskad in #3321
Add missing class name binding by @raskad in #3328
Truncate environment stack on non-caught native error by @HalidOdat in #3331
Fix regular expression construction by @HalidOdat in #3338
Fix super() construction with default parameters by @HalidOdat in #3339
Fix static class element evaluation order by @raskad in #3327
Fix detection of runtime limits for accessors by @jedel1043 in #3335
Fix Number.prototype.toFixed() by @HalidOdat in #2898
Check eval realm before call by @HalidOdat in #3375
Evaluate all parts of class in strict mode by @HalidOdat in #3383
Fix var declaration for deleted binding locator by @raskad in #3387
Fix await flag in class constructor by @raskad in #3388
Fix compilation for targets without AtomicU64 by @jedel1043 in #3399
Update regex.match spec and code by @raskad in #3462
Context independent CodeBlocks by @HalidOdat in #3424
Fix a Parser Idempotency Issue by @veera-sivarajan in #3172
Non recursive gc trace by @HalidOdat in #3508
Fix invalid return value when closing an iterator by @raskad in #3567
Implement Date parsing according to the spec by @raskad in #3564
Date refactor by @raskad in #3595
Fix regexp toString method by @raskad in #3608
Fix escaping in RegExp.prototype.source by @raskad in #3619
Fix line terminators in template strings by @raskad in #3641
Consider strict + no-strict tests as a single test by @jedel1043 in #3675
Preserve .exe suffix for Windows releases by @HalidOdat in #3680

Internal Improvements

Move RefCell of CompileTimeEnvironments to field bindings by @HalidOdat in #3108
Change name field type in CodeBlock to JsString by @HalidOdat in #3107
Refactor Array.prototype.find* and TypedArray variants to use FindViaPredicate by @dirkdev98 in #3134
Fix 1.71.0 lints by @RageKnify in #3140
Clippy updates: add panics and etc. by @nekevss in #3235
Remove unused class environments by @raskad in #3332
Improve highlighter performance by @jedel1043 in #3341
Cleanup get_option and calls to the function by @jedel1043 in #3355
Fix new lints for Rust 1.73 by @jedel1043 in #3361
Refactor compile time environment handling by @raskad in #3365
Update all dependencies by @jedel1043 in #3400
Optimize shift for dense arrays by @jedel1043 in #3405
Disallow changing type of already created objects by @jedel1043 in #3410
Merge CodeBlock constant pools by @HalidOdat in #3413
Move ordinary function [[ConstructorKind]] to CodeBlock by @HalidOdat in #3439
Move FunctionKind to CodeBlock by @HalidOdat in #3440
Unify generator and ordinary function creation by @HalidOdat in #3441
Move arguments object creation to bytecode by @HalidOdat in #3432
Move parameter environment creation to bytecode by @HalidOdat in #3433
Prevent DefVar opcode emit for global binding by @HalidOdat in #3453
Transition Intl types to NativeObject API by @jedel1043 in #3491
Reduce WeakGc<T> memory usage by @HalidOdat in #3492
Migrate Temporal to its own crate. by @nekevss in #3461
Reestructure repo and CI improvements by @jedel1043 in #3505
Move PromiseCapability to stack by @HalidOdat in #3528
Fix rust 1.75 lints by @raskad in #3540
Remove double indirection in module types by @jedel1043 in #3640
Fix clippy warnings for rustc 1.76 by @jedel1043 in #3668
Migrate to temporal_rs crate by @nekevss in #3694

Other Changes

Removed time 0.1 dependency, updated dependencies by @Razican in #3122
Add new CLI options to usage in README by @Razican in #3123
Find roots when running GC rather than runtime by @tunz in #3109
Re-enable must_use clippy rule by @tunz in #3180
Refactor environment, exception handling and jumping in VM by @HalidOdat in #3059
Refactor Context::run() method by @HalidOdat in #3179
Added examples by @postmeback in #3141
Use main stack for calling ordinary functions by @HalidOdat in #3185
Update license field following SPDX 2.1 license expression standard by @frisoft in #3209
Store active runnable and active function in CallFrame by @HalidOdat in #3197
Added MSRV check by @Razican in #3291
Reintroduce publish CI job by @jedel1043 in #3308
Format code snippets in docs by @jedel1043 in #3317
Remove direct conversion from &str to JsValue/PropertyKey. by @jedel1043 in #3319
icu_properties default features to true by @nekevss in #3326
Varying length instruction operands by @HalidOdat in #3253
Improve CI testing by @jedel1043 in #3333
Refactor function internal methods by @HalidOdat in #3322
Make environments opcodes use varying operands by @HalidOdat in #3340
Bump test262 by @jedel1043 in #3349
Refactor ordinary VM calling by @HalidOdat in #3295
Fix Array.join when the array contains itself by @ahaoboy in #3406
Rename master workflow to main by @Razican in #3409
Cleaned up a couple of Github action warnings by @Razican in #3417
Temporal duration update and cleanup by @nekevss in #3443
Progress on Duration's round/total method updates by @nekevss in #3451
Simplify all extensions APIs of Context by @jedel1043 in #3456
[[HostDefined]] Improvements by @johnyob in #3460
Make well_known_symbols functions pub by @tj825 in #3465
Use Vec<T> for keeping track of gc objects by @HalidOdat in #3493
Implement Inline Caching by @HalidOdat in #2767
Migrate ISO8601 parsing to boa_temporal by @nekevss in #3500
Implement erased objects by @jedel1043 in #3494
Build out ZonedDateTime, TimeZone, and Instant by @nekevss in #3497
boa_temporal structure changes and docs update by @nekevss in #3504
Refactor vm calling convention to allow locals by @HalidOdat in #3496
Temporal Parser Cleanup/Fixes by @nekevss in #3521
Refactor Temporal Calendar API for AnyCalendar and fields by @nekevss in #3522
Update boa_temporal Time Zone design by @nekevss in #3543
Implement DifferenceInstant and related refactor by @nekevss in #3568
Run cargo update on fuzz crate by @jedel1043 in #3607
Temporal Instant migration cont. and related changes by @nekevss in #3601
Temporal: Update Date builtin with boa_temporal and fixes by @nekevss in #3614
Temporal: Build out Time and its methods by @nekevss in #3613
Temporal: Enable temporal tests by @nekevss in #3620
Fix tests results upload by @raskad in #3635
Temporal: DateTime and PlainDateTime functionality by @nekevss in #3628
Temporal: Initial PlainTime build out by @nekevss in #3621
Ignore Cargo.lock in fuzzer by @jedel1043 in #3636
Temporal: attribute/property and custom calendar fixes by @nekevss in #3639
Docs: Update boa's main README.md by @nekevss in #3650
Bump time from 0.3.31 to 0.3.33 by @jedel1043 in #3652
Temporal: Refactor Calendar protocol for JsObjects by @nekevss in #3651
Simplify Temporal APIs by @jedel1043 in #3653
Implement inline caching tests and cleanup by @HalidOdat in #3513
Docs: Update README.md and add boa_cli's README.md by @nekevss in #3659
Change HostEnsureCanCompileStrings to the new spec by @jedel1043 in #3690
Split ICU4X data generation from boa_icu_provider by @jedel1043 in #3682
Add a catch all for other categories not labelled by @jasonwilliams in #3703
Fix temporal_rs in Cargo.toml by @nekevss in #3702

New Contributors

@AlvinKuruvilla made their first contribution in #3129
@tunz made their first contribution in #3109
@postmeback made their first contribution in #3092
@kelbazz made their first contribution in #3193
@frisoft made their first contribution in #3209
@mattsse made their first contribution in #3297
@arexon made their first contribution in #3381
@johnyob made their first contribution in #3369
@ahaoboy made their first contribution in #3406
@tj825 made their first contribution in #3465
@AngeloChecked made their first contribution in #3481

Full Changelog: https://github.com/boa-dev/boa/compare/v0.17...v0.18

0.17.0 (2023-07-05)

Feature Enhancements

Implement new.target expression by @raskad in #2299
Parse static async private methods in classes by @raskad in #2315
Implement JsDataView by @nekevss in #2308
Upgrade clap to 4.0, add value hints for zsh and fish by @Razican in #2336
Implement JsRegExp by @nekevss in #2326
Create new lazy Error type by @jedel1043 in #2283
Fixed some documentation and clippy warnings in tests by @Razican in #2362
Removed the "VM Implementation" headline for Test262 by @Razican in #2364
Modified the loadfile example to show how Boa can read bytes by @Razican in #2363
Implement LabelledStatement by @jedel1043 in #2349
Split vm/opcode into modules by @nekevss in #2343
Removed some duplicate code, added ToIndentedString by @Razican in #2367
Document the AST by @jedel1043 in #2377
Implement member accessors in initializer of for loops by @jedel1043 in #2381
Implement JsGenerator and wrapper docs clean up by @nekevss in #2380
Add named evaluation of logical assignments by @raskad in #2389
Implement optional chains by @jedel1043 in #2390
Implement delete for references by @jedel1043 in #2395
Implement AST Visitor pattern (attempt #3) by @addisoncrump in #2392
Implement async arrow functions by @raskad in #2393
Pretty print promise objects by @jedel1043 in #2407
Parser Idempotency Fuzzer by @addisoncrump in #2400
Safe wrapper for JsDate by @anuvratsingh in #2181
Fix some Date tests by @jedel1043 in #2431
Boa Gc implementation draft by @nekevss in #2394
VM Fuzzer by @addisoncrump in #2401
Implement the WeakRef builtin by @jedel1043 in #2438
Refactor the Date builtin by @jedel1043 in #2449
Implement instruction flowgraph generator by @HalidOdat in #2422
JsArrayBuffer take method and docs by @nekevss in #2454
Set function names in object literal methods by @raskad in #2460
Redesign Intl API and implement some services by @jedel1043 in #2478
Cleanup Context APIs by @jedel1043 in #2504
Prepare Promises for new host hooks and job queue API by @jedel1043 in #2528
Implement host hooks and job queues APIs by @jedel1043 in #2529
First batch of no_std support for some sub-crates by @jedel1043 in #2544
Create Source to abstract JS code sources by @jedel1043 in #2579
Move increment and decrement operations to Update expression by @raskad in #2565
Implement binary in operation with private names by @raskad in #2582
Module parsing by @Razican in #2411
Implement WeakSet by @lupd in #2586
Implement WeakMap by @raskad in #2597
API to construct a NativeFunction from a native async function by @jedel1043 in #2542
Add --strict flag to cli by @HalidOdat in #2689
Add timeout to CI by @HalidOdat in #2691
Add ES5 and ES6 Conformance calculation to boa_tester by @ZackMitkin in #2690
Improve tester display for multiple editions by @jedel1043 in #2720
Implement JsPromise wrapper by @jedel1043 in #2758
Initial version of a JS -> Rust conversion trait. by @Razican in #2276
Implement escape and unescape by @jedel1043 in #2768
Implement debug object for CLI by @HalidOdat in #2772
Make Realm shareable between functions by @jedel1043 in #2801
Implement Annex-B string html methods by @HalidOdat in #2798
Implement annex-b trimLeft and trimRight string methods by @HalidOdat in #2806
Implement HTML comments and gate behind the annex-b feature by @jedel1043 in #2817
Implement Intl.Segmenter by @jedel1043 in #2840
Implement var initializers in for-in loops by @jedel1043 in #2842
Improve debug output of JsNativeError and Realm by @jedel1043 in #2894
Implement runtime limits for loops by @HalidOdat in #2857
Implement runtime limits for recursion by @HalidOdat in #2904
Implement annexB Block-Level Function Declarations by @raskad in #2910
Implement module execution by @jedel1043 in #2922
Type safe root shape by @HalidOdat in #2940
Implement dynamic imports by @jedel1043 in #2932
Implement pseudo-property import.meta by @jedel1043 in #2956
Implement with and object environments by @raskad in #2692
Add hooks to get the current time and timezone by @jedel1043 in #2824
Make JsSymbol thread-safe by @jedel1043 in #2539
Added a Boa runtime by @Razican in #2743
Implement TryFromJs for JsObject wrappers by @Razican in #2809
Allow passing owned HostHooks and JobQueues to Context by @jedel1043 in #2811
Implement String.prototype.toLocaleUpper/LowerCase by @jedel1043 in #2822
Implement constant folding optimization by @HalidOdat in #2679
Implement Hidden classes by @HalidOdat in #2723
show object kind, name and address when using dbg! by @jasonwilliams in #2960
Add convenience methods to ModuleLoader by @jedel1043 in #3007
Allow JobQueue to concurrently run jobs by @jedel1043 in #3036
Make IntegerIndexed::byte_offset public by @CryZe in #3017
Allow awaiting JsPromise from Rust code by @jedel1043 in #3011
Cache cargo-tarpaulin binary by @jedel1043 in #3071
add link to the main logo by @jasonwilliams in #3082

Bug Fixes

Add unicode terminator to line comment by @creampnx-x in #2301
Fix function property order by @raskad in #2305
Fix some Array spec deviations by @raskad in #2306
Fix double conversion to primitive in ToNumeric by @raskad in #2310
Fixing the output for the test diffs in PRs by @Razican in #2320
Fix Regex literal parsing in MemberExpression by @tunz in #2328
Fix error in Proxy set implementation by @raskad in #2369
Allow LineTerminator before Semicolon in continue by @raskad in #2371
Fix var collisions in strict eval calls by @jedel1043 in #2382
Set in to true when parsing AssignmentExpression in ConditionalExpression by @raskad in #2386
Skip prototype field definition for arrow function by @raskad in #2388
Remove invalid optimization in addition by @raskad in #2387
Fix order dependent execution in assignment. by @HalidOdat in #2378
Add early error for yield in GeneratorExpression parameters by @raskad in #2413
Handle __proto__ fields in object literals by @raskad in #2423
Fix built-ins/Array/prototype/toString/non-callable-join-string-tag.js test case by @akavi in #2458
Fix PartialEq for JsBigInt and f64 by @raskad in #2461
Allow class expressions without identifier by @raskad in #2464
Fix to weak_trace for boa_tester by @nekevss in #2470
Fix unary operations on this by @veera-sivarajan in #2507
Fix postfix operator line terminator parsing by @raskad in #2520
Remove Literal::Undefined by @veera-sivarajan in #2518
Add early errors for 'eval' or 'arguments' in parameters by @raskad in #2515
Pass a receiver value in property getter opcodes by @raskad in #2516
Add regex literal early errors by @raskad in #2517
Break Opcode and ByteCompiler changes by @nekevss in #2523
Refactor some class features by @raskad in #2513
Recognize Directive Prologues correctly by @raskad in #2521
Correctly parse consecutive semicolons by @raskad in #2533
Fix some HoistableDeclaration parsing errors by @raskad in #2532
Return the correct value from a statement list by @raskad in #2554
Fix error for static class methods named prototype by @raskad in #2552
Avoid creating prototype property on methods by @raskad in #2553
Fix double property access on assignment ops by @raskad in #2551
Add early errors for escaped identifiers by @raskad in #2546
Fix failing collator tests by @jedel1043 in #2575
fuzzer: bubble up NoInstructionsRemain error instead of trying to handle as exception by @Mrmaxmeier in #2566
Try-catch-block control flow fix/refactor by @nekevss in #2568
Fix doc tests and add CI check by @jedel1043 in #2606
Fix string to number conversion for infinity by @raskad in #2607
Fix exponent operator by @HalidOdat in #2681
Update README.md cli options by @HalidOdat in #2678
Fix incorrect Number.MIN_VALUE value by @HalidOdat in #2682
Correctly run async tests by @jedel1043 in #2683
Fix value to bigint conversion by @HalidOdat in #2688
Fix Object constructor by @raskad in #2694
Fix get function opcode traces by @HalidOdat in #2708
Add early errors to dynamic function constructors by @raskad in #2716
Add negative zero handling for Map.delete by @raskad in #2726
Fix remaining Set tests by @raskad in #2725
Fix update expressions getting values multiple times by @raskad in #2733
Make if statements return their completion values by @raskad in #2739
Fix super call execution order by @raskad in #2724
Fix deserialization of SpecEdition by @jedel1043 in #2762
Add json-parse-with-source feature to boa_tester by @HalidOdat in #2778
Fix Symbol.prototype[@@iterator] by @HalidOdat in #2800
Fix String.prototype.replace() order of ToString execution by @HalidOdat in #2799
Fix ThrowTypeError intrinsic by @HalidOdat in #2797
Fix String.prototype.substr() by @HalidOdat in #2805
Fix destructive for-of loop assignments by @raskad in #2803
Fix TypedArrays minus zero key by @HalidOdat in #2808
Fix sync generator yield expressions by @raskad in #2838
Fix async generators by @raskad in #2853
Catch 'eval' and 'arguments' in setter method parameter by @raskad in #2858
Fix PropertyKey index parse by @HalidOdat in #2843
Fix Date.prototype[Symbol.primitive] incorrect attributes by @HalidOdat in #2862
Allow Date object to store invalid NativeDateTime by @HalidOdat in #2861
Fix panic when calling toString with radix by @HalidOdat in #2863
Fix incorrect LoopContinue instruction in while-do loops by @HalidOdat in #2866
Initialize var bindings in runtime environments with undefined by @raskad in #2860
Bugfix/new.target is not understood by the parser as an expression #2793 by @projectnoa in #2878
Fix RegExp constructor return value when pattern is a regexp by @HalidOdat in #2880
RegExp constructor should call IsRegExp() by @HalidOdat in #2881
Fix for-of expression parsing by @HalidOdat in #2882
Disallow strict directives with escaped sequences by @jedel1043 in #2892
Make typeof throw when accessing uninitialized variables by @raskad in #2902
Fix wrong name of Function.prototype[Symbol.hasInstance] by @raskad in #2905
Fix remaining object literal tests by @raskad in #2906
Add SyntaxErrors in GlobalDeclarationInstantiation by @raskad in #2908
Fix switch default execution by @HalidOdat in #2907
Add loop and switch return values by @raskad in #2828
Allow escaped let as expression by @HalidOdat in #2916
Allow let name in for-in loop in non-strict mode by @HalidOdat in #2915
Fix lexical environments in for loops by @raskad in #2917
Fix GetSubstitution by @HalidOdat in #2933
Allow escaped async as binding name by @jedel1043 in #2936
Fix tagged template creation by @raskad in #2925
Implement Private Runtime Environments by @raskad in #2929
Fix remaining ES5 built-ins/RegExp tests by @HalidOdat in #2957
Fix remaining static module bugs by @jedel1043 in #2955
Deny Unicode Escapes in boolean and null expressions by @veera-sivarajan in #2931
Fix Date for dynamic timezones by @jedel1043 in #2877
Fix ES5 selector by @veera-sivaraja in #2924
Labelled ByteCompiler Fix by @nekevss in #2534
Fix verbose test display by @jedel1043 in #2731
Fix WASM playground by @jedel1043 in #2992
Correctly initialize functions inside modules by @jedel1043 in #2993
Allow true, false and null in object patterns by @jedel1043 in #2994
Fix panic in optional expressions with private identifiers by @raskad in #2995
Fix prompt on windows by @ShaneEverittM in #2986
Fix panic in constructor call by @raskad in #3001
Unify async iterators and iterators compilation by @jedel1043 in #2976
Correctly parse yield import(..) expressions by @jedel1043 in #3006
Return the correct value during a labelled break by @raskad in #2996
Fix panics on empty return values by @raskad in #3018
Add early error for await in class static blocks by @raskad in #3019
Fix class constructor return value by @raskad in #3028
Fix super property access by @raskad in #3026
Skip reversing arguments in SuperCallDerived by @dirkdev98 in #3062
Mark header of rooted ephemerons when tracing by @jedel1043 in #3049
Copy ABOUT.md file to all published crates by @jedel1043 in #3074
Correctly handle finally..loop..break by @dirkdev98 in #3073

Internal Improvements

Direct conversion from u8 to Opcode by @HalidOdat #2951
Fix links in readme by @raskad in #2304
Switch to workspace inherited properties by @jedel1043 in #2297
Separate JsObjectType implementors to their own module by @CalliEve in #2324
First prototype for new JsString using UTF-16 by @jedel1043 in #1659
Split Node into Statement, Expression and Declaration by @jedel1043 in #2319
Changes neccesary -> necessary by @nekevss in #2370
Cleanup and speed-up CI by @RageKnify in #2376
Reduce documentation size in blog by @jedel1043 in #2383
Generate Opcode impl using macro by @jedel1043 in #2391
Extract the ast to a crate by @jedel1043 in #2402
Replace contains and friends with visitors by @jedel1043 in #2403
Rewrite some patterns with let-else and ok_or_else by @jedel1043 in #2404
Fix async tests result values by @jedel1043 in #2406
Rewrite scope analysis operations using visitors by @jedel1043 in #2408
Make JsString conform to miri tests by @jedel1043 in #2412
Reduced boilerplate code in the parser by @Razican in #2410
Extract the parser into a crate by @jedel1043 in #2409
Switch tarpaulin to llvm engine by @RageKnify in #2432
Cleanup boa_tester by @jedel1043 in #2440
Restructure lint lists in boa_ast by @raskad in #2433
Restructure lints in multiple crates by @raskad in #2447
Restructure lint lists in boa_engine by @raskad in #2455
Fix rust 1.66.0 lints by @raskad in #2486
Divide byte compiler by @e-codes-stuff in #2425
Cleanup inline annotations by @jedel1043 in #2493
[profiler] Cache StringId by @tunz in #2495
Improve identifier parsing by @jedel1043 in #2581
Remove Syntax Errors from Bytecompiler by @raskad in #2598
fix: RUSTSEC-2020-0071 in boa_engine by @hanabi1224 in #2627
Migrate tests to new test API by @jedel1043 in #2619
[regexp] new tests for unicode flag by @selfisekai in #2656
Handle surrogates in String.fromCodePoint by @jedel1043 in #2659
Bump Test262 and add new features by @jedel1043 in #2729
Fix cross-realm construction bugs by @jedel1043 in #2786
Lift InternalObjectMethods from Object by @jedel1043 in #2790
Implement async functions using generators by @jedel1043 in #2821
Improve strictness of GeneratorState by @jedel1043 in #2837
Upgraded to ICU 1.2 by @Razican in #2826
Fix setting properties inside with blocks by @jedel1043 in #2847
Create a unique PromiseCapability on each async function call by @jedel1043 in #2846
Refactor binding handling APIs by @jedel1043 in #2870
Refactor guards into a ContextCleanupGuard abstraction by @jedel1043 in #2890
Refactor binding declarations by @raskad in #2887
Cleanup some bytecompiler code by @raskad in #2918
Fix use_self lints by @raskad in #2946
Remove unused lint allows by @raskad in #2968
Decouple bytecompiler from CodeBlock by @HalidOdat in #2669
Clarity changes for the VM by @nekevss in #2531
Bump bitflags to 2.0.0 by @Razican in #2666
Replace deprecated set-output command by @karol-jani in #2500
Documentation Updates by @nekevss in #2463
Fixed typo in the docs by @Razican in #2450
update tasks.json by @jasonwilliams in #2313
Updated the Code of Conduct by @Razican in #2365
Bump serde_json from 1.0.85 to 1.0.86 by @jedel1043 in #2341
Add test case for issue #2719 by @jedel1043 in #2980
Remove unneded num_bindings in Opcodes and CodeBlock by @HalidOdat in #2967
Added period to sentence by @nekevss in #2939
Prune collected shared shapes by @HalidOdat in #2941
Separate declarative environment kinds by @jedel1043 in #2921
Shrink environment binding locators by @HalidOdat in #2950
Extract "About Boa" section into a separate file by @jedel1043 in #2938
Remove arguments_binding field from CodeBlock by @HalidOdat in #2969
Remove redundant param_count field from CallFrame by @HalidOdat in #2962
Direct length access on arrays by @HalidOdat in #2796
Prevent allocation of field names by @HalidOdat in #2901
Added unit tests for boa_ast::Punctuator by @Razican in #2884
Added unit tests for boa_ast::Keyword by @Razican in #2883
Make update operations reuse the last found binding locator by @jedel1043 in #2876
Docs update for boa_runtime and console documentation by @nekevss in #2891
Direct array element access on ByValue instructions by @HalidOdat in #2827
Optimize String.prototype.normalize by @jedel1043 in #2848
Fix more Annex B tests by @jedel1043 in #2841
Enable github queues and remove bors.toml by @jedel1043 in #2899
Shrink size of IndexedProperties by @HalidOdat in #2757
Added an example usage to documentation by @Razican in #2742
Don't construct prototype if not needed by @HalidOdat in #2751
Implement is_identifier_(start/part) using icu_properties by @jedel1043 in #2865
Add boa logo to remaining hosted docs by @nekevss in #2740
Added a bunch more tests by @Razican in #2885
Updated dependencies, removes remove_dir_all, which is vulnerable by @Razican in #2685
Updated README by @Razican in #2825
Remove panics on module compilation by @jedel1043 in #2730
Update icu dependencies by @raskad in #2574
Pin tarpaulin version to 0.22 by @jedel1043 in #2562
Improve the design of ephemerons in our GC by @jedel1043 in #2530
Pass locale data provider by ref instead of boxing by @jedel1043 in #2508
Fast path for static property keys by @tunz in #2604
Replace criterion::black_box with std::hint::black_box by @jedel1043 in #2494
Shrink objects by using ThinVecs by @HalidOdat in #2752
Redesign native functions and closures API by @jedel1043 in #2499
Make the wasmbind feature of the chrono crate optional by @Razican in #2810
Use opcode table rather than match by @tunz in #2501
Align iterator loops to the spec by @jedel1043 in #2686
Add AST node for parenthesized expressions by @raskad in #2738
Optimize Get/SetPropertyByName by @tunz in #2608
Keep Integer type for inc/dec of an integer by @tunz in #2615
Implement CompletionRecords for the Vm by @nekevss in #2618
Feature flag on builtins console import by @nekevss in #2584
Fix documentation links by @Razican in #2741
Updated syn to 2.0.3 by @Razican in #2702
Cleanup intrinsics and move to realm by @jedel1043 in #2555
Rename check_parser and Identifier by @jedel1043 in #2576
Fix rust 1.67 lints by @raskad in #2567
Avoid unneeded bounds checks in bytecode address patching by @HalidOdat in #2680
Rust 1.68 clippy fixes by @nekevss in #2646
Fix rust 1.70 lints by @raskad in #2990
Simplify/Refactor exception handling and last statement value by @HalidOdat in #3053

0.16.0 (2022-09-25)

Feature Enhancements

Implement getter and setter of Object.prototype.__proto__ by @CYBAI in #2110
Execution stack & promises by @Razican in #2107
Add the [[Done]] field to iterators by @Razican in #2125
Fix for in/of loop initializer environment by @raskad in #2135
Implement Promise.all by @raskad in #2140
Implement Promise.any by @raskad in #2145
Implement Promise.allSettled by @raskad in #2146
Implement super expressions by @raskad in #2116
Implement async function and await by @raskad in #2158
Implementation of JsMap Wrapper by @nekevss in #2115
Safe wrapper for JsSet by @anuvratsingh in #2162
Implement JsArrayBuffer by @HalidOdat in #2170
Implement arrow function parsing based on CoverParenthesizedExpressionAndArrowParameterList by @raskad in #2171
Implement Generator Function Constructor by @raskad in #2174
Parse class private async generator methods by @raskad in #2220
Implement Async Generators by @raskad in #2200
Add field accessors to destructing assignment by @raskad in #2213
Added a bit more integer operation consistency to ByteDataBlock creation by @Razican in #2272
Implement Async-from-Sync Iterator Objects by @raskad in #2234
Add URI encoding and decoding functions by @Razican in #2267
Implement for await...of loops by @raskad in #2286

Bug Fixes

Fix eval attributes by @raskad in #2130
Fix this in function calls by @raskad in #2153
Fix remaining Promise bugs by @raskad in #2156
Fix length/index in 32bit architectures by @HalidOdat in #2196
Fix yield expression to end on line terminator by @raskad in #2232
Fix spread arguments in function calls by @raskad in #2216
Fix arguments object iterator function by @raskad in #2231
check history file exist if not create it by @udhaykumarbala in #2245
Do not auto-insert semicolon in VariableDeclarationList by @tunz in #2266
Fix property access of call expression by @tunz in #2273
fix computed property methods can call super methods by @creampnx-x in #2274
Fix regex literal /[/]/ by @tunz in #2277
Fixed assignment expression parsing by @Razican in #2268
Fix labelled block statement by @creampnx-x in #2285
Implement missing global object internal methods by @raskad in #2287

Internal Improvements

Fix spec links for some object operation methods by @CYBAI in #2111
Only run benchmarks on PRs when a label is set by @raskad in #2114
Refactor construct and PromiseCapability to preserve JsObject invariants by @jedel1043 in #2136
Remove string-interner dependency and implement custom string Interner by @jedel1043 in #2147
Fix clippy 1.62.0 lints by @raskad in #2154
Store call frames in Vec instead of singly-linked list by @HalidOdat in #2164
Dense/Packed JavaScript arrays by @HalidOdat in #2167
Fix Rust 1.63 clippy lints by @raskad in #2230
Removed some unsafe_empty_trace!() calls to improve performance by @Razican in #2233
Add integer type to fast path of to_property_key by @tunz in #2261

Full Changelog: https://github.com/boa-dev/boa/compare/v0.14...v0.15

0.15.0 (2022-06-10)

Feature Enhancements

Deploy playground to custom destination dir by @jedel1043 in #1943
add README for crates.io publish by @superhawk610 in #1952
migrated to clap 3 by @manthanabc in #1957
Implement unscopables for Array.prototype by @NorbertGarfield in #1963
Retrieve feature-based results for Test262 runs by @NorbertGarfield in #1980
Added better error handling for the Boa tester by @Razican in #1984
Add From for JsValue by @lastmjs in #1990
Implement Classes by @raskad in #1976
Allow PropertyNames in BindingPropertyin ObjectBindingPattern by @raskad in #2022
Allow Initializer after ArrayBindingPattern in FormalParameter by @raskad in #2002
Allow unicode escaped characters in identifiers that are keywords by @raskad in #2021
Feature JsTypedArrays by @HalidOdat in #2003
Allow creating object with true/false property names by @lupd in #2028
Implement get RegExp.prototype.hasIndices by @HalidOdat in #2031
Partial implementation for Intl.DateTimeFormat by @NorbertGarfield in #2025
Allow let as variable declaration name by @raskad in #2044
cargo workspaces fixes #2001 by @jasonwilliams in #2026
Move redeclaration errors to parser by @raskad in #2027
Feature JsFunction by @HalidOdat in #2015
Improve JsString performance by @YXL76 in #2042
Implement ResolveLocale helper by @NorbertGarfield in #2036
Refactor IdentifierReference parsing by @raskad in #2055
Implement the global eval() function by @raskad in #2041
DateTimeFormat helpers by @NorbertGarfield in #2064
Create Date standard constructor by @jedel1043 in #2079
Implement ProxyBuilder by @jedel1043 in #2076
Remove strict flag from Context by @raskad in #2069
Integrate ICU4X into Intl module by @jedel1043 in #2083
Implement Function constructor by @raskad in #2090
Parse private generator methods in classes by @raskad in #2092

Bug Fixes

Fix link to the playground by @raskad in #1947
convert inner datetime to local in to_date_string by @superhawk610 in #1953
Fix panic on AST dump in JSON format by @kilotaras in #1959
Fix panic in do while by @pdogr in #1968
Support numbers with multiple leading zeroes by @lupd in #1979
Fix length properties on array methods by @lupd in #1983
Allow boolean/null as property identifier by dot operator assignment by @lupd in #1985
fix(vm): off-by-one in code block stringification. by @tsutton in #1999
Indicate bigint has constructor by @lupd in #2008
Change ArrayBuffer byteLength to accessor property by @lupd in #2010
Fix ArrayBuffer.isView() by @HalidOdat in #2019
Fix casting negative number to usize in Array.splice by @lupd in #2030
Fix Symbol and BigInt constructors by @HalidOdat in #2032
Make Array.prototype an array object by @HalidOdat in #2033
Fix early return in for in loop head by @raskad in #2043

Internal Improvements

docs: update README by structuring the topics by @ftonato in #1958
Migrate to NPM and cleanup Playground by @jedel1043 in #1951
Fix performance bottleneck in VM by @pdogr in #1973
Remove git2 and hex dependencies by @raskad in #1992
Fix rust 1.60 clippy lints by @raskad in #2014
Refactor RegExp constructor methods by @raskad in #2049
Fixing build for changes in clippy for Rust 1.61 by @Razican in #2082

Full Changelog: https://github.com/boa-dev/boa/compare/v0.14...v0.15

0.14.0 (2022-03-15) - Virtual Machine

Feature Enhancements

Implement functions for vm by @HalidOdat in #1433
Implement Object.getOwnPropertyNames and Object.getOwnPropertySymbols by @kevinputera in #1606
Implement Symbol.prototype.valueOf by @hle0 in #1618
Implement Array.prototype.at() by @nekevss in #1613
Implement Array.from by @nrabulinski #1831
Implement String.fromCharCode by @hle0 in #1619
Implement Typed Array built-in by @Razican in #1552
Implement arguments exotic objects by @jedel1043 in #1522
Allow BindingPatterns as CatchParameter by @lowr in #1628
Implement Symbol.prototype[ @@toPrimitive ] by @Nimpruda in #1634
Implement Generator parsing by @raskad in #1575
Implement Object.hasOwn and improve Object.prototype.hasOwnProperty by @kevinputera in #1639
Hashbang lexer support by @nekevss in #1631
Implement delete operator in the vm by @raskad in #1649
Implement Object.fromEntries by @kevinputera in #1660
Initial implementation for increment/decrement in VM by @abhishekc-sharma in #1621
Implement Proxy object by @raskad in #1664
Implement object literals for vm by @raskad in #1668
Implement Array findLast and findLastIndex by @bsinky in #1665
Implement DataView built-in object by @Nimpruda in #1662
Clean-up contribution guidelines, dependencies, Test262, MSRV by @Razican in #1683
Implement Async Generator Parsing by @nekevss in #1669
Implement prototype of Intl built-in by @hle0 in #1622
Add limited console.trace implementation by @osman-turan in #1623
Allow BindingPattern in function parameters by @am-a-man in #1666
Small test ux improvements by @orndorffgrant in #1704
Implement missing vm operations by @raskad in #1697
Added fallible allocation to data blocks by @Razican in #1728
Document CodeBlock by @TheDoctor314 in #1691
Generic JsResult<R> in context.throw_ methods by @HalidOdat in #1734
Implement String.raw( template, ...substitutions ) by @HalidOdat in #1741
Updated test262 suite and dependencies by @Razican in #1755
Lexer string interning by @Razican in #1758
Adjust compile and execute to avoid clones by @Razican in #1778
Interner support in the parser by @Razican in #1765
Convert Codeblock variables to Sym by @raskad in #1798
Using production builds for WebAssembly by @Razican in #1825
Give the arrow function its proper name by @rumpl in #1832
Unwrap removal by @Razican in #1842
Feature JsArray by @HalidOdat in #1746
Rename "Boa" to boa_engine, moved GC and profiler to their crates by @Razican in #1844
Added conversions from and to serde_json's Value type by @Razican in #1851
Toggleable JsValue internals displaying by @HalidOdat in #1865
Implement generator execution by @raskad in #1790
Feature arrays with empty elements by @HalidOdat in #1870
Removed reference counted pointers from JsValue variants by @Razican in #1866
Implement Object.prototype.toLocaleString() by @HalidOdat in #1875
Implement AggregateError by @HalidOdat in #1888
Implement destructing assignments for assignment expressions by @raskad in #1895
Added boa examples by @elasmojs in #1161

Bug Fixes

Fix BigInt and Number comparison by @HalidOdat #1887
Fix broken structure links in the documentation by @abhishekc-sharma in #1612
Use function name from identifiers in assignment expressions by @raskad #1908
Fix integer parsing by @nrabulinski in #1614
Fix Number.toExponential and Number.toFixed by @nrabulinski in #1620
Badge updates by @atouchet in #1638
refactor: fix construct_error functions by @RageKnify in #1703
Fix internal vm tests by @raskad in #1718
Removed a bunch of warnings and clippy errors by @Razican in #1754
Fix some broken links in the profiler documentation by @Razican in #1762
Add proxy handling in isArray method by @raskad in #1777
Copy/paste fix in Proxy error message by @icecream17 in #1787
Fixed #1768 by @Razican in #1820
Fix string.prototype methods and add static string methods by @jevancc in #1123
Handle allocation errors by @y21 in #1850
Fix wasm use outside browsers by @Razican in #1846
Add assertion to check that a break label is identified at compile-time by @VTCAKAVSMoACE in #1852
Correct reference error message by @aaronmunsters in #1855
Fixing main branch workflows by @Razican in #1858
Correct pop_on_return behaviour by @VTCAKAVSMoACE in #1853
Fix equality between objects and undefined or null by @HalidOdat in #1872
Removing the panic in favour of an error result by @Razican in #1874
Make Object.getOwnPropertyDescriptors spec compliant by @HalidOdat in #1876
Make Error and %NativeError% spec compliant by @HalidOdat in #1879
Fix Number.prototype.toString when passing undefined as radix by @HalidOdat in #1877
Cleanup vm stack on function return by @raskad in #1880
%NativeError%.[[prototype]] should be Error constructor by @HalidOdat in #1883
Make StringToNumber spec compliant by @HalidOdat in #1881
Fix PropertyKey to JsValue conversion by @HalidOdat in #1886
Make iterator spec complaint by @HalidOdat in #1889
Implement Number.parseInt and Number.parseFloat by @HalidOdat in #1894
Fix unreachable panics in compile_access by @VTCAKAVSMoACE in #1861
Continue panic fixes by @VTCAKAVSMoACE in #1896
Deny const declarations without initializer inside for loops by @jedel1043 in #1903
Fix try/catch/finally related bugs and add tests by @jedel1043 in #1901
Compile StatementList after parse passes on negative tests by @raskad in #1906
Prevent breaks without loop or switch from causing panics by @VTCAKAVSMoACE in #1860
Fix postfix increment and decrement return values by @raskad in #1913

Internal Improvements

Rewrite initialization of builtins to use the BuiltIn trait by @jedel1043 in #1586
Unify object creation with empty and from_proto_and_data methods by @jedel1043 in #1567
VM Tidy Up by @jasonwilliams in #1610
Fix master refs to main by @jasonwilliams in #1637
Refresh vm docs and fix bytecode trace output by @raskad #1921
Change type of object prototypes to Option<JsObject> by @jedel1043 in #1640
Refactor Function internal methods and implement BoundFunction objects by @jedel1043 in #1583
change that verbosity comparison to > 2 by @praveenbakkal in #1680
Respect rust 1.56 by @RageKnify in #1681
Add bors to CI by @RageKnify in #1684
Adding VM conformance output to PR checks by @Razican in #1685
Start removing non-VM path by @jasonwilliams in #1747
Using upstream benchmark action by @Razican in #1753
Fix bors hanging by @RageKnify in #1767
add more timers on object functions by @jasonwilliams in #1775
Update the PR benchmarks action by @Razican in #1774
General code clean-up and new lint addition by @Razican in #1809
Reduced the size of AST nodes by @Razican in #1821
Using the new formatting arguments from Rust 1.58 by @Razican in #1834
Rework RegExp struct to include bitflags field by @aaronmunsters in #1837
Ignore wastefull RegExp tests by @raskad in #1840
Refactor the environment for runtime performance by @raskad in #1829
Refactor mapped Arguments object by @raskad in #1849
Fixed dependabot for submodule by @Razican in #1856
Refactorings for Rust 1.59 by @RageKnify in #1867
Removing internal deprecated functions by @HalidOdat in #1854
Remove toInteger and document the string builtin by @jedel1043 in #1884
Extract Intrinsics struct from Context and cleanup names by @jedel1043 in #1890

Full Changelog: https://github.com/boa-dev/boa/compare/v0.13...v0.14

0.13.0 (2021-09-30) - Many new features and refactors

Feature Enhancements:

FEATURE #1526: Implement ComputedPropertyName for accessor properties in ObjectLiteral (@raskad)
FEATURE #1365: Implement splice method (@neeldug)
FEATURE #1364: Implement spread for objects (@FrancisMurillo)
FEATURE #1525: Implement Object.preventExtensions() and Object.isExtensible() (@HalidOdat)
FEATURE #1508: Implement Object.values() (@HalidOdat)
FEATURE #1332: Implement Array.prototype.sort (@jedel1043)
FEATURE #1417: Implement Object.keys and Object.entries (@skyne98)
FEATURE #1406: Implement destructuring assignments (@raskad)
FEATURE #1469: Implement String.prototype.replaceAll (@raskad)
FEATURE #1442: Implement closure functions (@HalidOdat)
FEATURE #1390: Implement RegExp named capture groups (@raskad)
FEATURE #1424: Implement Symbol.for and Symbol.keyFor (@HalidOdat)
FEATURE #1375: Implement at method for string (@neeldug)
FEATURE #1369: Implement normalize method (@neeldug)
FEATURE #1334: Implement Array.prototype.copyWithin (@jedel1043)
FEATURE #1326: Implement get RegExp[@@species] (@raskad)
FEATURE #1314: Implement RegExp.prototype [ @@search ] ( string ) (@raskad)
FEATURE #1451: Feature prelude module (@HalidOdat)
FEATURE #1523: Allow moving NativeObject variables into closures as external captures (@jedel1043)

Bug Fixes:

BUG #1521: Added "js" feature for getrandom for WebAssembly builds (@Razican)
BUG #1528: Always return undefined from functions that do not return (@raskad)
BUG #1518: Moving a JsObject inside a closure caused a panic (@jedel1043)
BUG #1502: Adjust EnumerableOwnPropertyNames to use all String type property keys (@raskad)
BUG #1415: Fix panic on bigint size (@neeldug)
BUG #1477: Properly handle NaN in new Date() (@raskad)
BUG #1449: Make Array.prototype methods spec compliant (@HalidOdat)
BUG #1353: Make Array.prototype.concat spec compliant (@neeldug)
BUG #1384: bitwise not operation (spec improvements) (@neeldug)
BUG #1374: Match and regexp construct fixes (@neeldug)
BUG #1366: Use lock for map iteration (@joshwd36)
BUG #1360: Adjust a comment to be next to the correct module (@teymour-aldridge)
BUG #1349: Fixes Array.protoype.includes (@neeldug)
BUG #1348: Fixes unshift maximum size (@neeldug)
BUG #1339: Scripts should not be considered in a block (@macmv)
BUG #1312: Fix display for nodes (@macmv)
BUG #1347: Fix stringpad abstract operation (@neeldug)
BUG #1584: Refactor the Math builtin object (spec compliant) (@jedel1043)
BUG #1535: Refactor JSON.parse (@raskad)
BUG #1572: Refactor builtin Map intrinsics to follow more closely the spec (@jedel1043)
BUG #1445: improve map conformance without losing perf (@neeldug)
BUG #1488: Date refactor (@raskad)
BUG #1463: Return function execution result from constructor if the function returned (@raskad)
BUG #1434: Refactor regexp costructor (@raskad)
BUG #1350: Refactor / Implement RegExp functions (@RageKnify) (@raskad)
BUG #1331: Implement missing species getters (@raskad)

Internal Improvements:

INTERNAL #1569: Refactor EnvironmentRecordTrait functions (@raskad)
INTERNAL #1464: Optimize integer negation (@HalidOdat)
INTERNAL #1550: Add strict mode flag to Context (@raskad)
INTERNAL #1561: Implement abstract operation GetPrototypeFromConstructor (@jedel1043)
INTERNAL #1309: Implement Display for function objects(@kvnvelasco)
INTERNAL #1492: Implement new get_or_undefined method for JsValue (@jedel1043)
INTERNAL #1553: Fix benchmark action in CI (@jedel1043)
INTERNAL #1547: Replace FxHashMap with IndexMap in object properties (@raskad)
INTERNAL #1435: Constant JsStrings (@HalidOdat)
INTERNAL #1499: Updated the Test262 submodule (@Razican)
INTERNAL #1458: Refactor the JS testing system (@bartlomieju)
INTERNAL #1485: Implement abstract operation CreateArrayFromList (@jedel1043)
INTERNAL #1465: Feature throw Error object (@HalidOdat)
INTERNAL #1493: Rename boa::Result to JsResult (@bartlomieju)
INTERNAL #1457: Rename Value to JsValue (@HalidOdat)
INTERNAL #1460: Change StringGetOwnProperty to produce the same strings that the lexer produces (@raskad)
INTERNAL #1425: Extract PropertyMap struct from Object (@jedel1043)
INTERNAL #1432: Proposal of new PropertyDescriptor design (@jedel1043)
INTERNAL #1383: clippy lints and cleanup of old todos (@neeldug)
INTERNAL #1346: Implement gh-page workflow on release (@FrancisMurillo)
INTERNAL #1422: Refactor internal methods and make some builtins spec compliant (@HalidOdat)
INTERNAL #1419: Fix DataDescriptor Value to possibly be empty (@raskad)
INTERNAL #1357: Add Example to Execute a Function of a Script File (@schrieveslaach)
INTERNAL #1408: Refactor JavaScript bigint rust type (@HalidOdat)
INTERNAL #1380: Custom JavaScript string rust type (@HalidOdat)
INTERNAL #1382: Refactor JavaScript symbol rust type (@HalidOdat)
INTERNAL #1361: Redesign bytecode virtual machine (@HalidOdat)
INTERNAL #1381: Fixed documentation warnings (@Razican)
INTERNAL #1352: Respect Rust 1.53 (@RageKnify)
INTERNAL #1356: Respect Rust fmt updates (@RageKnify)
INTERNAL #1338: Fix cargo check errors (@neeldug)
INTERNAL #1329: Allow Value.set_field to throw (@raskad)
INTERNAL #1333: adds condition to avoid triggers from dependabot (@neeldug)
INTERNAL #1337: Fix github actions (@neeldug)

0.12.0 (2021-06-07) - `Set`, accessors, `@@toStringTag` and no more panics

Feature Enhancements:

FEATURE #1085: Add primitive promotion for method calls on GetField (@RageKnify)
FEATURE #1033: Implement Reflect built-in object (@tofpie)
FEATURE #1151: Fully implement EmptyStatement (@SamuelQZQ)
FEATURE #1158: Include name in verbose results output of boa-tester (@0x7D2B)
FEATURE #1225: Implement Math[ @@toStringTag ] (@HalidOdat)
FEATURE #1224: Implement JSON[ @@toStringTag ] (@HalidOdat)
FEATURE #1222: Implement Symbol.prototype.description accessor (@HalidOdat)
FEATURE #1221: Implement RegExp flag accessors (@HalidOdat)
FEATURE #1240: Stop ignoring a bunch of tests (@Razican)
FEATURE #1132: Implement Array.prototype.flat/flatMap (@davimiku)
FEATURE #1235: Implement Object.assign( target, ...sources ) (@HalidOdat)
FEATURE #1243: Cross realm symbols (@HalidOdat)
FEATURE #1249: Implement Map.prototype[ @@toStringTag ] (@wylie39)
FEATURE #1111: Implement Set builtin object (@RageKnify)
FEATURE #1265: Implement BigInt.prototype[ @@toStringTag ] (@n14littl)
FEATURE #1102: Support Unicode escape in identifier names (@jevancc)
FEATURE #1273: Add default parameter support (@0x7D2B)
FEATURE #1292: Implement symbol.prototype[ @@ToStringTag ] (@moadmmh)
FEATURE #1291: Support GetOwnProperty for string exotic object (@jarkonik)
FEATURE #1296: Added the $262 object to the Test262 test runner (@Razican)
FEATURE #1127: Implement Array.of (@camc)

Bug Fixes:

BUG #1071: Fix attribute configurable of the length property of arguments (@tofpie)
BUG #1073: Fixed spelling (@vishalsodani)
BUG #1072: Fix get/set as short method name in object (@tofpie)
BUG #1077: Fix panics from multiple borrows of Map (@joshwd36)
BUG #1079: Fix lexing escapes in string literal (@jevancc)
BUG #1075: Fix out-of-range panics of Date (@jevancc)
BUG #1084: Fix line terminator in string literal (@jevancc)
BUG #1110: Fix parsing floats panics and bugs (@jevancc)
BUG #1202: Fix a typo in gc.rs (@teymour-aldridge)
BUG #1201: Return optional value in to_json functions (@fermian)
BUG #1223: Update cli name in Readme (@sphinxc0re)
BUG #1175: Handle early errors for declarations in StatementList (@0x7D2B)
BUG #1270: Fix Context::register_global_function() (@HalidOdat)
BUG #1135: Fix of instructions.rs comment, to_precision impl and rfc changes (@NathanRoyer)
BUG #1272: Fix Array.prototype.filter (@tofpie & @Razican)
BUG #1280: Fix slice index panic in add_rest_param (@0x7D2B)
BUG #1284: Fix GcObject to_json mutable borrow panic (@0x7D2B)
BUG #1283: Fix panic in regex execution (@0x7D2B)
BUG #1286: Fix construct usage (@0x7D2B)
BUG #1288: Fixed Math.hypot.length bug (@moadmmh)
BUG #1285: Fix environment record panics (@0x7D2B)
BUG #1302: Fix VM branch (@jasonwilliams)

Internal Improvements:

INTERNAL #1067: Change Realm::global_object field from Value to GcObject (@RageKnify)
INTERNAL #1048: VM Trace output fixes (@jasonwilliams)
INTERNAL #1109: Define all property methods of constructors (@RageKnify)
INTERNAL #1126: Remove unnecessary wraps for non built-in functions (@RageKnify)
INTERNAL #1044: Removed duplicated code in vm.run using macros (@stephanemagnenat)
INTERNAL #1103: Lazy evaluation for cooked template string (@jevancc)
INTERNAL #1156: Rework environment records (@0x7D2B)
INTERNAL #1181: Merge Const/Let/Var DeclList into DeclarationList (@0x7D2B)
INTERNAL #1234: Separate Symbol builtin (@HalidOdat)
INTERNAL #1131: Make environment methods take &mut Context (@HalidOdat)
INTERNAL #1271: Make same_value and same_value_zero static methods (@HalidOdat)
INTERNAL #1276: Cleanup (@Razican)
INTERNAL #1279: Add test comparison to Test262 result compare (@Razican)
INTERNAL #1293: Fix test262 comment formatting (@0x7D2B)
INTERNAL #1294: Don't consider panic fixes as "new failures" (@Razican)

0.11.0 (2021-01-14) - Faster Parsing & Better compliance

Feature Enhancements:

FEATURE #836: Async/Await parse (@Lan2u)
FEATURE #704: Implement for...of loops (@joshwd36)
FEATURE #770: Support for symbols as property keys for Object.defineProperty (@georgeroman)
FEATURE #717: Strict Mode Lex/Parse (@Lan2u)
FEATURE #800: Implement console crate feature - Put console object behind a feature flag (@HalidOdat)
FEATURE #804: Implement EvalError (@HalidOdat)
FEATURE #805: Implement Function.prototype.call (@RageKnify)
FEATURE #806: Implement URIError (@HalidOdat)
FEATURE #811: Implement spread operator using iterator (@croraf)
FEATURE #844: Allow UnaryExpression with prefix increment/decrement (@croraf)
FEATURE #798: Implement Object.getOwnPropertyDescriptor() and Object.getOwnPropertyDescriptors() (@JohnDoneth)
FEATURE #847: Implement Map.prototype.entries() (@croraf)
FEATURE #859: Implement spec compliant Array constructor (@georgeroman)
FEATURE #874: Implement Map.prototype.values and Map.prototype.keys (@croraf)
FEATURE #877: Implement Function.prototype.apply (@georgeroman)
FEATURE #908: Implementation of instanceof operator (@morrien)
FEATURE #935: Implement String.prototype.codePointAt (@devinus)
FEATURE #961: Implement the optional space parameter in JSON.stringify (@tofpie)
FEATURE #962: Implement Number.prototype.toPrecision (@NathanRoyer)
FEATURE #983: Implement Object.prototype.isPrototypeOf (@tofpie)
FEATURE #995: Support Numeric separators (@tofpie)
FEATURE #1013: Implement nullish coalescing (?? and ??=) (@tofpie)
FEATURE #987: Implement property accessors (@tofpie)
FEATURE #1018: Implement logical assignment operators (&&= and ||=) (@tofpie)
FEATURE #1019: Implement early errors for non-assignable nodes in assignment (@tofpie)
FEATURE #1020: Implement Symbol.toPrimitive (@tofpie)
FEATURE #976: Implement for..in (@tofpie)
FEATURE #1026: Implement String.prototype.split (@jevancc)
FEATURE #1047: Added syntax highlighting for numbers, identifiers and template literals (@Razican)
FEATURE #1003: Improve Unicode support for identifier names (@jevancc)

Bug Fixes:

BUG #782: Throw TypeError if regexp is passed to startsWith, endsWith, includes (@pt2121)
BUG #788: Fixing a duplicated attribute in test262 results (@Razican)
BUG #790: Throw RangeError when BigInt division by zero occurs (@JohnDoneth)
BUG #785: Fix zero argument panic in JSON.parse() (@JohnDoneth)
BUG #749: Fix Error constructors to return rather than throw (@RageKnify)
BUG #777: Fix cyclic JSON.stringify / primitive conversion stack overflows (@vgel)
BUG #799: Fix lexer span panic with carriage return (@vgel)
BUG #812: Fix 2 bugs that caused Test262 to fail (@RageKnify)
BUG #826: Fix tokenizing Unicode escape sequence in string literal (@HalidOdat)
BUG #825: calling "new" on a primitive value throw a type error (@dlemel8)
BUG #853 Handle invalid Unicode code point in the string literals (@jevancc)
BUG #870 Fix JSON stringification for fractional numbers (@georgeroman)
BUG #807: Make boa::parse emit error on invalid input, not panic (@georgeroman)
BUG #880: Support more number literals in BigInt's from string constructor (@georgeroman)
BUG #885: Fix BigInt.prototype.toString() radix checks (@georgeroman)
BUG #882: Fix (panic) remainder by zero (@georgeroman)
BUG #884: Fix some panics related to BigInt operations (@georgeroman)
BUG #888: Fix some panics in String.prototype properties (@georgeroman)
BUG #902: Fix Accessors panics (@HalidOdat)
BUG #959: Fix Unicode character escape sequence parsing (@tofpie)
BUG #964: Fix single line comment lexing with CRLF line ending (@tofpie)
BUG #919: Reduce the number of Array-related panics (@jakubfijalkowski)
BUG #968: Fix unit tests that can be failed due to daylight saving time (@tofpie)
BUG #972: Fix enumerable attribute on array length property (@tofpie)
BUG #974: Fix enumerable attribute on string length property (@tofpie)
BUG #981: Fix prototypes for Number, String and Boolean (@tofpie)
BUG #999: Fix logical expressions evaluation (@tofpie)
BUG #1001: Fix comparison with infinity (@tofpie)
BUG #1004: Fix panics surrounding Object.prototype.hasOwnProperty() (@HalidOdat)
BUG #1005: Fix panics surrounding Object.defineProperty() (@HalidOdat)
BUG #1021: Fix spread in new and call expressions (@tofpie)
BUG #1023: Fix attributes on properties of functions and constructors (@tofpie)
BUG #1017: Don't panic when function parameters share names (@AnnikaCodes)
BUG #1024: Fix delete when the property is not configurable (@tofpie)
BUG #1027: Supress regress errors on invalid escapes for regex (@jasonwilliams
BUG #1031: Fixed some extra regex panics (@Razican)
BUG #1049: Support overriding the arguments variable (@AnnikaCodes)
BUG #1050: Remove panic on named capture groups (@Razican)
BUG #1046: Remove a few different panics (@Razican)
BUG #1051: Fix parsing of arrow functions with 1 argument (@Lan2u)
BUG #1045: Add newTarget to construct (@tofpie)
BUG #659: Error handling in environment (@54k1)

Internal Improvements:

INTERNAL #735: Move exec implementations together with AST node structs (@georgeroman)
INTERNAL #724: Ignore tests for code coverage count (@HalidOdat)
INTERNAL #768 Update the benchmark Github action (@Razican)
INTERNAL #722: ConstructorBuilder, ObjectInitializer, cache standard objects and fix global object attributes (@HalidOdat)
INTERNAL #783: New test262 results format (This also reduces the payload size for the website) (@Razican)
INTERNAL #787: Refactor ast/node/expression into ast/node/call and ast/node/new (@croraf)
INTERNAL #802: Make Function.prototype a function (@HalidOdat)
INTERNAL #746: Add Object.defineProperties and handle props argument in Object.create (@dvtkrlbs)
INTERNAL #774: Switch from regex to regress for ECMA spec-compliant regex implementation (@neeldug)
INTERNAL #794: Refactor PropertyDescriptor (Improved performance) (@HalidOdat)
INTERNAL #824: [parser Expression] minor expression macro simplification (@croraf)
INTERNAL #833: Using unstable sort for sorting keys on to_json() for GC objects (@Razican)
INTERNAL #837: Set default-run to boa removing need for --bin (@RageKnify)
INTERNAL #841: Minor refactor and rename in eval() method (@croraf)
INTERNAL #840: fix(profiler): update profiler to match current measureme api (@neeldug)
INTERNAL #838: style(boa): minor cleanup (@neeldug)
INTERNAL #869: Updated cache in workflows (@Razican)
INTERNAL #873 Removed cache from MacOS builds (@Razican)
INTERNAL #835: Move Object internal object methods to GcObject (@HalidOdat)
INTERNAL #886: Support running a specific test/suite in boa_tester (@georgeroman)
INTERNAL #901: Added "unimplemented" syntax errors (@Razican)
INTERNAL #911: Change Symbol hash to u64 (@HalidOdat)
INTERNAL #912: Feature Context::register_global_property() (@HalidOdat)
INTERNAL #913: Added check to ignore semicolon in parser (@AngelOnFira)
INTERNAL #915: Improve lexer by make cursor iterate over bytes (@jevancc)
INTERNAL #952: Upgraded rustyline and test262 (@Razican)
INTERNAL #960: Fix unresolved links in documentation (@tofpie)
INTERNAL #979: Read file input in bytes instead of string (@tofpie)
INTERNAL #1014: StatementList: Rename statements to items (@AnnikaCodes)
INTERNAL #860: Investigation into ByteCode Interpreter (@jasonwilliams)
INTERNAL #1042: Add receiver parameter to object internal methods (@tofpie)
INTERNAL #1030: VM: Implement variable declaration (var, const, and let) (@AnnikaCodes)
INTERNAL #1010: Modify environment binding behaviour of function (@54k1)

0.10.0 (2020-09-29) - New Lexer & Test 262 Harness

Feature Enhancements:

FEATURE #524: Implement remaining Math methods (@mr-rodgers)
FEATURE #562: Implement remaining Number methods (@joshwd36)
FEATURE #536: Implement SyntaxError (@HalidOdat)
FEATURE #543: Implements Object.create builtin method (@croraf)
FEATURE #492: Switch to rustyline for the CLI (@IovoslavIovchev & @Razican)
FEATURE #595: Added syntax highlighting for strings in REPL (@HalidOdat)
FEATURE #586: Better error formatting and cli color (@HalidOdat)
FEATURE #590: Added keyword and operator colors and matching bracket validator to REPL (@HalidOdat)
FEATURE #555: Implement Array.prototype.reduce (@benjaminflin)
FEATURE #550: Initial implementation of Map() (@joshwd36 & @HalidOdat)
FEATURE #579: Implement Array.prototype.reduceRight (@benjaminflin)
FEATURE #585: Implement Well-Known Symbols (@joshwd36)
FEATURE #589: Implement the comma operator (@KashParty)
FEATURE #341: Ability to create multiline blocks in boa shell (@HalidOdat)
FEATURE #252: Implement Date (@jcdickinson)
FEATURE #711: Add support for >>>= (@arpit-saxena)
FEATURE #549: Implement label statements (@jasonwilliams)
FEATURE #373: Introduce PropertyKey for field acces (@RageKnify)
FEATURE #627: Feature native class objects (NativeObject and Class traits) (@HalidOdat)
FEATURE #694: Feature gc module (@HalidOdat)
FEATURE #656: Feature Context (@HalidOdat)
FEATURE #673: Add #[track_caller] to GcObject methods that can panic (@HalidOdat)
FEATURE #661: Add documentation to GcObject methods (@HalidOdat)
FEATURE #662: Implement std::error::Error for GcObject borrow errors (@HalidOdat)
FEATURE #660: Make GcObject::contruct not take 'this' (@HalidOdat)
FEATURE #654: Move require_object_coercible to Value (@HalidOdat)
FEATURE #603: Index PropertyKey, Object iterators and symbol support (@HalidOdat)
FEATURE #637: Feature boa::Result<T> (@HalidOdat)
FEATURE #625: Moved value operations from Interpreter to Value (@HalidOdat)
FEATURE #638: Changed to Value::to_*int32 => Value::to_*32 (@HalidOdat)

Bug Fixes:

BUG #405: Fix json.stringify symbol handling (@n14little)
BUG #520: Fix all Value operations and add unsigned shift right (@HalidOdat)
BUG #529: Refactor exec/expression into exec/call and exec/new (@croraf)
BUG #510: [[Call]] calling an undefined method does not throw (@joshwd36)
BUG #493: Use correct exponential representation for rational values (@Tropid)
BUG #572: Spec Compliant Number.prototype.toString(), better Number object formating and -0 (@HalidOdat)
BUG #599: Fixed String.prototype.indexOf() bug, when the search string is empty (@HalidOdat)
BUG #615: Fix abstract relational comparison operators (@HalidOdat)
BUG #608: Debug::fmt Causes Causes a Stack Overflow (@jcdickinson)
BUG #532 [builtins - Object] Object.getPrototypeOf returning incorrectly (@54k1)
BUG #533 [exec - function] function.prototype doesn't have own constructor property pointing to this function (@54k1)
BUG #641 Test new_instance_should_point_to_prototype is not checked correctly (@54k1)
BUG #644 undefined constants panic on execution (@jcdickinson)
BUG #631: Unexpected result when applying typeof to undefined value (@jcdickinson)
BUG #667: Fix panic when calling function that mutates itself (@dvtkrlbs)
BUG #668: Fix clippy on Nightly (@dvtkrlbs)
BUG #582: Make String.prototype.repeat() ECMAScript specification compliant (@HalidOdat)
BUG #541: Made all Math methods spec compliant (@HalidOdat)
BUG #597: Made String.prototype.indexOf spec compliant. (@HalidOdat)
BUG #598: Made String.prototype.lastIndexOf() spec compliant (@HalidOdat)
BUG #583: Fix string prototype trim methods (@HalidOdat)
BUG #728: Fix bug when setting the length on String objects (@jasonwilliams)
BUG #710: Fix panic when a self mutating function is constructing an object (@HalidOdat)
BUG #699: Fix Value::to_json order of items in array (@sele9)
BUG #610: Fix: String.prototype.replace substitutions (@RageKnify)
BUG #645: Fix undefined constant expression evaluation (@jcdickinson)
BUG #643: Change default return type from null to undefined (@54k1)
BUG #642: Missing constructor field in ordinary functions (@54k1)
BUG #604: Missing __proto__ field in functions instances (@54k1)
BUG #561: Throw a TypeError when a non-object is called (@joshwd36)
BUG #748: Fix parse error throwing a TypeError, instead of SyntaxError (@iamsaquib8)
BUG #737: Make Object.toString() spec compliant (@RageKnify)

Internal Improvements:

INTERNAL #567: Add ECMAScript test suite (test262) (@Razican)
INTERNAL #559: New Lexer (@Lan2u @HalidOdat @Razican)
INTERNAL #712: Refactor: Value::to_object to return GcObject (@RageKnify)
INTERNAL #544: Removed consoles dependency of InternalState (@HalidOdat)
INTERNAL #556: Added benchmark for goal symbol switching (@Razican)
INTERNAL #578: Extract prototype from internal slots (@HalidOdat)
INTERNAL #553: Refactor Property Descriptor flags (@HalidOdat)
INTERNAL #592: RegExp specialization (@HalidOdat)
INTERNAL #626: Refactor Function (@HalidOdat @Razican)
INTERNAL #564: Add benchmarks for "uglified" JS (@neeldug)
INTERNAL #706: Cache well known symbols (@HalidOdat)
INTERNAL #723: Add fast path for string concatenation (@RageKnify)
INTERNAL #689: Move object module to root (@HalidOdat)
INTERNAL #684: Move property module to root (@HalidOdat)
INTERNAL #674: Move value module to root (@HalidOdat)
INTERNAL #693: Rename Object::prototype() and Object::set_prototype() (@RageKnify)
INTERNAL #665: approx_eq! macro for expm1 tests. (@neeldung)
INTERNAL #581: Added CLEAN_JS and MINI_JS benches (@neeldung)
INTERNAL #640: Benchmark refactor (@neeldung)
INTERNAL #635: Add missing ops to exec module (@jarredholman)
INTERNAL #616: Remove Value::as_num_to_power() (@HalidOdat)
INTERNAL #601: Removed internal_slots from object (@HalidOdat)
INTERNAL #560: Added benchmarks for full program execution (@Razican)
INTERNAL #547: Merged create into init for builtins (@HalidOdat)
INTERNAL #538: Cleanup and added test for String.prototype.concat (@HalidOdat)
INTERNAL #739: Add release action (@jasonwilliams)
INTERNAL #744: Add MacOS check and test to CI (@neeldug)

# 0.9.0 (2020-07-03) - Move to Organisation, 78% faster execution time

Feature Enhancements:

FEATURE #414: Implement Number object constants (@Lan2u) (@HalidOdat)
FEATURE #345: Implement the optional replacer parameter in JSON.stringify( value[, replacer [, space] ] ) (@n14little)
FEATURE #480: Implement global Infinity property (@AnirudhKonduru)
FEATURE #410: Add support for the reviver function to JSON.parse (@abhijeetbhagat)
FEATURE #425: Specification compliant ToString (to_string) (@HalidOdat)
FEATURE #442: Added TypeError implementation (@HalidOdat)
FEATURE #450: Specification compliant ToBigInt (to_bigint) (@HalidOdat)
FEATURE #455: TemplateLiteral Basic lexer implementation (@croraf)
FEATURE #447: parseInt, parseFloat implementation (@Lan2u)
FEATURE #468: Add BigInt.asIntN() and BigInt.asUintN() functions (@Tropid)
FEATURE #428: [Feature Request] - Create benchmark for Array manipulation (@abhijeetbhagat)
FEATURE #439: Implement break handling in switch statements (@Lan2u)
FEATURE #301: Implementing the switch statement in the new parser (@Lan2u)
FEATURE #120: Implement globalThis (@zanayr)
FEATURE #513: Implement Object.is() method (@tylermorten)
FEATURE #481: Implement global undefined property (@croraf)

Bug Fixes:

BUG #412: Fixed parsing if statement without else block preceded by a newline (@HalidOdat)
BUG #409: Fix function object constructable/callable (@HalidOdat)
BUG #403 Value::to_json() does not handle undefined correctly (@n14little)
BUG #443: HasOwnProperty should call GetOwnProperty and not GetProperty (@n14little)
BUG #210: builtinfun.length undefined (@Croraf)
BUG #466: Change ToPrimitive() (to_primitive()) hint to be an enum, instead of string (@HalidOdat)
BUG #421: NaN is lexed as a number, not as an identifier (@croraf)
BUG #454: Function declaration returns the function, it should return undefined (@croraf)
BUG #482: Field access should propagate the exception (Err(_)) (@neeldug)
BUG #463: Use of undefined variable should throw an error (@croraf)
BUG #502: Fixed global objects initialization order (@HalidOdat)
BUG #509: JSON.stringify(undefined) panics (@n14little)
BUG #514: Clean up Math Methods (@n14little)
BUG #511: [Call] Usage of "this" in methods is not supported (@jasonwilliams)

Internal Improvements

INTERNAL #435: Optimize type comparisons (@Lan2u)
INTERNAL #296: using measureme for profiling the interpreter (@jasonwilliams)
INTERNAL #419: Object specialization (fast paths for many objects) (@HalidOdat)
INTERNAL #392: Execution and Node modulization (@Razican)
INTERNAL #465: Refactoring Value (decouple Gc from Value) (@HalidOdat)
INTERNAL #416 & INTERNAL #423: Update links to boa-dev (@pedropaulosuzuki)
INTERNAL #378: Code Coverage! (@Lan2u)
INTERNAL #431: Updates to PR Benchmarks (@Razican)
INTERNAL #427 #429 #430: Added new benchmarks (@Razican)

# 0.8.0 (2020-05-23) - BigInt, Modularized Parser, Faster Hashing

v0.8.0 brings more language implementations, such as do..while, function objects and also more recent EcmaScript additions, like BigInt. We have now moved the Web Assembly build into the wasm package, plus added a code of conduct for those contributing.

The parser has been even more modularized in this release making it easier to add new parsing rules.

Boa has migrated it's object implemention to FXHash which brings much improved results over the built-in Rust hashmaps (at the cost of less DOS Protection).

Feature Enhancements:

FEATURE #121: BigInt Implemented (@HalidOdat)
FEATURE #293: Improved documentation of all modules (@HalidOdat)
FEATURE #302: Implement do..while loop (@ptasz3k)
FEATURE #318: Added continous integration for windows (@HalidOdat)
FEATURE #290: Added more build profiles (@Razican)
FEATURE #323: Aded more benchmarks (@Razican)
FEATURE #326: Rename Boa CLI (@sphinxc0re)
FEATURE #312: Added jemallocator for linux targets (@Razican)
FEATURE #339: Improved Method parsing (@muskuloes)
FEATURE #352: create boa-wasm package (@muskuloes)
FEATURE #304: Modularized parser
FEATURE #141: Implement function objects (@jasonwilliams)
FEATURE #365: Implement for loop execution (@Razican)
FEATURE #356: Use Fx Hash to speed up hash maps in the compiler (@Razican)
FEATURE #321: Implement unary operator execution (@akryvomaz)
FEATURE #379: Automatic auditing of Boa (@n14little)
FEATURE #264: Implement this (@jasonwilliams)
FEATURE #395: impl abstract-equality-comparison (@hello2dj)
FEATURE #359: impl typeof (@RestitutorOrbis)
FEATURE #390: Modularize try statement parsing (@abhijeetbhagat)

Bug fixes:

BUG #308: Assignment operator not working in tests (a = a +1) (@ptasz3k)
BUG #322: Benchmarks are failing in master (@Razican)
BUG #325: Put JSON functions on the object, not the prototype (@coolreader18)
BUG #331: We only get Const::Num, never Const::Int (@HalidOdat)
BUG #209: Calling new Array with 1 argument doesn't work properly (@HalidOdat)
BUG #266: Panic assigning named function to variable (@Razican)
BUG #397: fix NaN is lexed as identifier, not as a number (@attliaLin)
BUG #362: Remove Monaco Editor Webpack Plugin and Manually Vendor Editor Workers (@subhankar-panda)
BUG #406: Dependency Upgrade (@Razican)
BUG #407: String() wasn't defaulting to empty string on call (@jasonwilliams)
BUG #404: Fix for 0 length new String(@tylermorten)

Code Of Conduct:

COC #384: Code of conduct added (@Razican)

Security:

SEC #391: run security audit daily at midnight. (@n14little)

# 0.7.0 (2020-04-13) - New Parser is 67% faster

v0.7.0 brings a REPL, Improved parser messages and a new parser! This is now the default behaviour of Boa, so running Boa without a file argument will bring you into a javascript shell. Tests have also been moved to their own files, we had a lot of tests in some modules so it was time to separate.

New Parser

Most of the work in this release has been on rewriting the parser. A big task taken on by HalidOdat, Razican and myself.

The majority of the old parser was 1 big function (called parse) which had some pattern matching on each token coming in. The easy branches could generate expressions (which were basically AST Nodes), the more involved branches would recursively call into the same function, until eventually you had an expression generated.

This only worked so far, eventually debugging parsing problems were difficult, also more bugs were being raised against the parser which couldn't be fixed.

We decided to break the parser into more of a state-machine. The initial decision for this was inspired by Fedor Indutny who did a talk at (the last) JSConf EU about how he broke up the old node-parser to make it more maintanable. He goes into more detail here https://www.youtube.com/watch?v=x3k_5Mi66sY&feature=youtu.be&t=530

The new parser has functions to match the states of parsing in the spec. For example https://tc39.es/ecma262/#prod-VariableDeclaration has a matching function read_variable_declaration. This not only makes it better to maintain but easier for new contributors to get involed, as following the parsing logic of the spec is easier than before.

Once finished some optimisations were added by HalidOdat to use references to the tokens instead of cloning them each time we take them from the lexer. This works because the tokens live just as long as the parser operations do, so we don't need to copy the tokens. What this brings is a huge performance boost, the parser is 67% faster than before!

Feature enhancements:

FEATURE #281: Rebuild the parser (@jasonwilliams, @Razican, @HalidOdat)
FEATURE #278: Added the ability to dump the token stream or ast in bin. (@HalidOdat)
FEATURE #253: Implement Array.isArray (@cisen)
FEATURE Switch to normal output instead of debugged output (stdout/stdout) (@jasonwilliams)
FEATURE #258: Moved test modules to their own files (@Razican)
FEATURE #267: Add print & REPL functionality to CLI (@JohnDoneth)
FEATURE #268: Addition of forEach() (@jasonwilliams) (@xSke)
FEATURE #262: Implement Array.prototype.filter (@Nickforall)
FEATURE #261: Improved parser error messages (@Razican)
FEATURE #277: Add a logo to the project (@HalidOdat)
FEATURE #260: Add methods with f64 std equivelant to Math object (@Nickforall)

Bug fixes:

BUG #249: fix(parser): handle trailing comma in object literals (@gomesalexandre)
BUG #244: Fixed more Lexer Panics (@adumbidiot)
BUG #256: Fixed comments lexing (@Razican)
BUG #251: Fixed empty returns (@Razican)
BUG #272: Fix parsing of floats that start with a zero (@Nickforall)
BUG #240: Fix parser panic
BUG #273: new Class().method() has incorrect precedence

Documentation Updates:

DOC #297: Better user contributed documentation

# 0.6.0 (2020-02-14) - Migration to Workspace Architecture + lexer/parser improvements

The lexer has had several fixes in this release, including how it parses numbers, scientific notation should be improved. On top of that the lexer no longer panics on errors including Syntax Errors (thanks @adumbidiot), instead you get some output on where the error happened.

Moving to a workspace architecture

Boa offers both a CLI and a library, initially these were all in the same binary. The downside is those who want to embed boa as-is end up with all of the command-line dependencies. So the time has come to separate out the two, this is normal procedure, this should be analogous to ripgrep and the regex crate. Cargo has great support for workspaces, so this shouldn't be an issue.

Benchmarks

We now have benchmarks which run against master! Thanks to Github Actions these will run automatically a commit is merged.

Feature enhancements:

FEATURE #218: Implement Array.prototype.toString (@cisen)
FEATURE #216: Keep accepting new array elements after spread.
FEATURE #220: Documentation updates. (@croraf)
FEATURE #226: add parser benchmark for expressions. (@jasonwilliams)
FEATURE #217: String.prototype.replace() implemented
FEATURE #247: Moved to a workspace architecture (@Razican)

Bug fixes:

BUG #222: Fixed clippy errors (@IovoslavIovchev)
BUG #228: [lexer: single-line-comment] Fix bug when single line comment is last line of file (@croraf)
BUG #229: Replace error throwing with panic in "Lexer::next()" (@croraf)
BUG #232/BUG #238: Clippy checking has been scaled right back to just Perf and Style (@jasonwilliams)
BUG #227: Array.prototype.toString should be called by ES value (@cisen)
BUG #242: Fixed some panics in the lexer (@adumbidiot)
BUG #235: Fixed arithmetic operations with no space (@gomesalexandre)
BUG #245: Fixed parsing of floats with scientific notation (@adumbidiot)

# 0.5.1 (2019-12-02) - Rest / Spread (almost)

Feature enhancements:

FEATURE #151: Implement the Rest/Spread operator (functions and arrays).
FEATURE #193: Implement macro for setting builtin functions
FEATURE #211: Better Display support for all Objects (pretty printing)

# 0.5.0 (2019-11-06) - Hacktoberfest Release

Feature enhancements:

FEATURE #119: Introduce realm struct to hold realm context and global object.
FEATURE #89: Implement exponentiation operator. Thanks @arbroween
FEATURE #47: Add tests for comments in source code. Thanks @Emanon42
FEATURE #137: Use Monaco theme for the demo page
FEATURE #114: String.match(regExp) is implemented (@muskuloes)
FEATURE #115: String.matchAll(regExp) is implemented (@bojan88)
FEATURE #163: Implement Array.prototype.every() (@letmutx)
FEATURE #165: Implement Array.prototype.find() (@letmutx)
FEATURE #166: Implement Array.prototype.findIndex() (@felipe-fg)
FEATURE #39: Implement block scoped variable declarations (@barskern)
FEATURE #161: Enable obj[key] = value syntax.
FEATURE #179: Implement the Tilde operator (@letmutx)
FEATURE #189: Implement Array.prototype.includes (incl tests) (@simonbrahan)
FEATURE #180: Implement Array.prototype.slice (@muskuloes @letmutx)
FEATURE #152: Short Function syntax (no arguments)
FEATURE #164: Implement Array.prototype.fill() (@bojan88)
Array tests: Tests implemented for shift, unshift and reverse, pop and push (@muskuloes)
Demo page has been improved, new font plus change on input. Thanks @WofWca
FEATURE #182: Implement some Number prototype methods (incl tests) (@pop)
FEATURE #34: Number object and Constructore are implemented (including methods) (@pop)
FEATURE #194: Array.prototype.map (@IovoslavIovchev)
FEATURE #90: Symbol Implementation (@jasonwilliams)

Bug fixes:

BUG #113: Unassigned variables have default of undefined (@pop)
BUG #61: Clippy warnings/errors fixed (@korpen)
BUG #147: Updated object global
BUG #154: Correctly handle all whitespaces within the lexer
Tidy up Globals being added to Global Object. Thanks @DomParfitt

0.4.0 (2019-09-25)

v0.4.0 brings quite a big release. The biggest feature to land is the support of regular expressions. Functions now have the arguments object supported and we have a debugging section in the docs.

Feature enhancements:

FEATURE #6: Support for regex literals. (Big thanks @999eagle)
FEATURE #13: toLowerCase, toUpperCase, substring, substr and valueOf implemented (thanks @arbroween)
Support for arguments object within functions
StringData instead of PrimitieData to match spec
Native function signatures changed, operations added to match spec
Primitives can now be boxed/unboxed when methods are ran on them
Spelling edits (thanks @someguynamedmatt)
Ability to set global values before interpreter starts (thanks @999eagle)
Assign operators implemented (thanks @oll3)

Bug fixes:

BUG #57: Fixed issue with stackoverflow by implementing early returns.
Allow to re-assign value to an existing binding. (Thanks @oll3)

0.3.0 (2019-07-26)

UnexpectedKeyword(Else) bug fixed #38
Contributing guide added
Ability to specify file - Thanks @callumquick
Travis fixes
Parser Tests - Thanks @Razican
Migrate to dyn traits - Thanks @Atul9
Added implementations for Array.prototype: concat(), push(), pop() and join() - Thanks @callumquick
Some clippy Issues fixed - Thanks @Razican
Objects have been refactored to use structs which are more closely aligned with the specification
Benchmarks have been added
String and Array specific console.log formats - Thanks @callumquick
isPropertyKey implementation added - Thanks @KrisChambers
Unit Tests for Array and Strings - Thanks @GalAster
typo fix - Thanks @palerdot
dist cleanup, thanks @zgotsch

0.2.1 (2019-06-30)

Some String prototype methods are implemented. Thanks to @lennartbuit we have trim/trimStart/trimEnd added to the string prototype

Feature enhancements:

String.prototype.concat ( ...args )
String.prototype.endsWith ( searchString [ , endPosition ] )
String.prototype.includes ( searchString [ , position ] )
String.prototype.indexOf ( searchString [ , position ] )
String.prototype.lastIndexOf ( searchString [ , position ] )
String.prototype.repeat ( count )
String.prototype.slice ( start, end )
String.prototype.startsWith ( searchString [ , position ] )

Bug fixes:

Plenty

0.2.0 (2019-06-10)

Working state reached

Tests on the lexer, conforms with puncturators and keywords from TC39 specification
wasm-bindgen added with working demo in Web Assembly
snapshot of boa in a working state for the first time

Files

CHANGELOG.md

Latest commit

History

CHANGELOG.md

File metadata and controls

CHANGELOG

What's Changed

Feature Enhancements

Bug Fixes

Internal Improvements

Other Changes

New Contributors

Feature Enhancements

Bug Fixes

Internal Improvements

Feature Enhancements

Bug Fixes

Internal Improvements

Feature Enhancements

Bug Fixes

Internal Improvements

Feature Enhancements

Bug Fixes

Internal Improvements

New Parser

Moving to a workspace architecture

Benchmarks

0.4.0 (2019-09-25)

0.3.0 (2019-07-26)

0.2.1 (2019-06-30)

0.2.0 (2019-06-10)