CHANGELOG.md

CHANGELOG

What's Changed

0.20.0 (2024-12-5)

Feature Enhancements

• Add a js_error! macro to create opaque errors by @hansl in #3920
• Update Instant for new Temporal functionality by @nekevss in #3928
• Add a way to add setters/getters in js_class! by @hansl in #3911
• Fix lints from rustc 1.80.0 by @jedel1043 in #3936
• Add a JsError::from_rust constructor to create native errors from Rust by @hansl in #3921
• add some temporal methods by @jasonwilliams in #3856
• Allow a custom Logger to be used as the backend for boa_runtime::Console by @hansl in #3943
• Add more utility functions around modules and exports by @hansl in #3937
• Allow trailing commas in js_class functions by @hansl in #3964
• Implement Atomics.pause by @jedel1043 in #3956
• Add a clone_inner method to allow cloning of inner data by @hansl in #3968
• fix: ignore debugger statement by @shurizzle in #3976
• Add support for boa(rename = "") in TryFromJs derive by @hansl in #3980
• Add an "iter()" method to Js*Array for convenience by @hansl in #3986
• A simple module loader from a function by @hansl in #3932
• Add a way for js_error! macro to create native errors with message by @hansl in #3971
• Limit actions runs to 1 per branch and fix macos release by @jedel1043 in #3996
• Add TextEncoder, TextDecoder implementations to boa_runtime by @hansl in #3994
• Add TryFromJs for TypedJsFunction and more tests by @hansl in #3981
• Add context to the console Logger trait by @hansl in #4005
• Add a URL class to boa_runtime by @hansl in #4004
• Add a display_lossy() to write a JsString lossily by @hansl in #4023
• TryIntoJs trait and derive macro for it by @Nikita-str in #3999
• console.debug() should use a debug Logger method by @hansl in #4019
• TryFromJs from JsMap for HashMap & BtreeMap by @Nikita-str in #3998
• Add string builder to build JsString by @CrazyboyQCD in #3915

Bug Fixes

• Implement Math.pow function according to ECMAScript specification by @magic-akari in #3916
• Fix temporal builtin properties by @nekevss in #3930
• Fix wrong neg operation by @CrazyboyQCD in #3926
• Fix destructuring assignment evaluation order by @raskad in #3934
• Fix various parser idempotency issues and parsing errors by @raskad in #3917
• Implement new spec changes for AsyncGenerator by @jedel1043 in #3950
• Refactor ast function types by @raskad in #3931
• Fix js_str macro to correctly handle latin1 strings by @jedel1043 in #3959
• Allow dead code for code that is newly detected as unused by @hansl in #3984
• Allow warnings when running CI on release branches by @jedel1043 in #3990
• docs: Fix link to examples by @it-a-me in #4007
• IntegerOrInfinity eq bug fix by @Nikita-str in #4010

Internal Improvements

• Refactor RawJsString's representation to make JsStrings construction from string literal heap-allocation free by @CrazyboyQCD in #3935
• Split default icu data into lazily deserialized parts by @jedel1043 in #3948
• Add clippy for denying print and eprints by @hansl in #3967
• Refactor iterator APIs to be on parity with the latest spec by @jedel1043 in #3962
• Add support for Trace, Finalize and JsData for Convert<> by @hansl in #3970
• use with_capacity to reduce re-allocations fixes #3896 by @jasonwilliams in #3961
• add nightly build by @jasonwilliams in #4026
• Patch the indentation in nightly_build.yml by @nekevss in #4028
• Update night build's rename binary step by @nekevss in #4032
• Use upload-rust-binary-action for nightly release by @nekevss in #4040
• Fix ref value in nightly and add target to nightly release by @nekevss in #4042
• Reduce environment allocations by @raskad in #4002

Other Changes

• Implement more Temporal functionality by @nekevss in #3924
• Add a Source::with_path method to set the path on a Source by @hansl in #3941
• Add spec edition 15 to the tester by @jedel1043 in #3957
• Rename as_promise to as_promise_object and add as_promise -> JsPromise by @hansl in #3965
• Build out partial record functionality, property bag construction, and with methods by @nekevss in #3955
• Enable CI for release branches by @jedel1043 in #3987
• Add a display type for JsString to allow formatting without allocations by @hansl in #3951
• Add TryIntoJsResult for vectors by @hansl in #3993
• Add tests from WPT and fix them in the Console by @hansl in #3979
• Update changelog for v0.19.1 by @jedel1043 in #3995
• Implement register allocation by @HalidOdat in #3942
• Implement scope analysis and local variables by @raskad in #3988
• JsValue::to_json fix integer property keys by @Nikita-str in #4011
• Some optimizations on Error by @CrazyboyQCD in #4020
• Option::None should try into Undefined, not Null by @hansl in #4029
• Some string optimizations by @CrazyboyQCD in #4030
• Add a JsPromise::from_result for convenience by @hansl in #4039
• Fix misspelled permissions in nightly build action by @nekevss in #4041
• Remove dockerfile from documentation by @4yman-0 in #4046
• Bump dependencies with breaking changes by @jedel1043 in #4050
• Migrate to fast-float2 by @jedel1043 in #4052

New Contributors

• @magic-akari made their first contribution in #3916
• @shurizzle made their first contribution in #3976
• @it-a-me made their first contribution in #4007
• @Nikita-str made their first contribution in #4010
• @4yman-0 made their first contribution in #4046

Full Changelog: https://github.com/boa-dev/boa/compare/v0.19...v0.20.0

0.19.1 (2024-09-11)

Bug Fixes

• Implement new spec changes for AsyncGenerator by @jedel1043 in #3950
• Allow dead code for code that is newly detected as unused by @hansl in #3984
• Allow warnings when running CI on release branches by @jedel1043 in #3990

Internal Improvements

• Add spec edition 15 to the tester by @jedel1043 in #3957
• Enable CI for release branches by @jedel1043 in #3987

Full Changelog: https://github.com/boa-dev/boa/compare/v0.19...v0.19.1

0.19.0 (2024-07-08)

Feature Enhancements

• Add release binary striping by @Razican in #3727
• Added NPM publish workflow by @Razican in #3725
• Remove references to dev docs and npm dependencies by @jedel1043 in #3787
• Cleanup tester deps and patterns by @jedel1043 in #3792
• Build docs.rs docs with all features enabled by @jedel1043 in #3794
• Add a new type Convert<> to convert values by @hansl in #3786
• Add functions to create modules from a JSON value by @hansl in #3804
• Add an embed_module!() macro to boa_interop by @hansl in #3784
• Add a ContextData struct to inject host defined types from the context by @hansl in #3802
• Implement object keys access by @HalidOdat in #3832
• Group dependabot updates by @jedel1043 in #3863
• Adding TryFromJs implementations for BTreeMap and HashMap by @hansl in #3844
• Adding TryFromJs implementations for tuples by @hansl in #3843
• Add a js_class to implement the Class trait without boilerplate by @hansl in #3872
• Implement lossless TryFromJs for integers from f64 by @HalidOdat in #3907

Bug Fixes

• Close for-of iterator when the loop body throws by @raskad in #3734
• Add default value handling for destructuring property access arrays by @raskad in #3738
• Fix invalid syntax errors for allowed let as variable names by @raskad in #3743
• Fix parsing of async in for-of loops by @raskad in #3745
• Fix parsing of binding identifier in try catch parameters by @raskad in #3752
• Add missing environment creation in initial iteration of for loop by @raskad in #3751
• chore: Update README link to reflect new site paths by @NickTomlin in #3793
• Fix order of ToString call in Function constructor by @HalidOdat in #3820
• Fix CI for nextest step by @jedel1043 in #3862
• Fix base objects in with statements by @raskad in #3870
• Fix boa cli history by @raskad in #3875
• Fix hashbang comments by using proper goal symbols by @raskad in #3876
• Fix AsyncGenerator to correctly handle return inside then by @jedel1043 in #3879
• Fix HomeObject for private class methods by @raskad in #3897
• Fix evaluation order in destructive property assignments by @raskad in #3895

Internal Improvements

• Apply new clippy lints for rustc 1.77 by @jedel1043 in #3759
• Change dependabot interval to weekly by @jedel1043 in #3758
• Dense array storage variants for i32 and f64 by @HalidOdat in #3760
• Optimize number to PropertyKey conversion by @HalidOdat in #3769
• don't run test262 on push by @jasonwilliams in #3774
• Check that min <= max in clamp_finite by @jedel1043 in #3699
• Decouple Context from ByteCompiler by @HalidOdat in #3829
• Implement latin1 encoded JsStrings by @HalidOdat in #3450
• Replace js_str with js_string in examples by @getong in #3836
• Separate JsString into its own crate by @HalidOdat in #3837
• Bump temporal_rs to latest commit by @jedel1043 in #3880
• Remove FormalParameterList from CodeBlock by @HalidOdat in #3882

Other Changes

• Fix a few Duration code typos by @robot-head in #3730
• Add a try_from_js implementation for Vec (accept any Array-like) by @hansl in #3755
• Swap to Duration::round from temporal_rs by @robot-head in #3731
• Cache this value by @HalidOdat in #3771
• Allow deserialization of missing objects properties into Option<> by @hansl in #3767
• Optimize Regex match check by @HalidOdat in #3779
• Add a boa_interop crate by @hansl in #3772
• Add a path to Module (and expose it in Referrer) by @hansl in #3783
• Properly resolve paths in SimpleModuleLoader and add path to Referrer::Script by @hansl in #3791
• Fix SimpleModuleLoader on Windows by @hansl in #3795
• Add more utility traits and funtions to boa_interop by @hansl in #3773
• Implement Promise.try() by @linusg in #3800
• Implement TryFromJs for Either<L, R> by @hansl in #3822
• Fix Rust 1.78.0 Clippy lints by @HalidOdat in #3838
• Switch from actions-rs/toolchain to dtolnay/rust-toolchain by @raskad in #3845
• Replace archived github actions from actions-rs by @raskad in #3848
• Add matrix badge and update communication to include matrix by @nekevss in #3865
• Add groupCollapsed by @leoflalv in #3867
• Bump ICU4X to 1.5 and cleanup Intl by @jedel1043 in #3868
• Update regress to v0.10.0 by @raskad in #3869
• Combine HasProperty and Get operations when possible by @raskad in #3883
• Remove some environment clones by @raskad in #3884
• Refactor call frame access to avoid panic checks by @raskad in #3888
• Remove Temporal.Calendar and Temporal.TimeZone by @jedel1043 in #3890
• Update Temporal rounding and implement additional methods by @nekevss in #3892
• format code in comments by @jasonwilliams in #3902
• Updates to temporal_rs version and temporal methods by @nekevss in #3900
• Patch regression from change to to-relative-to-object by @nekevss in #3906
• Add get_unchecked method to JsString and JsStr by @CrazyboyQCD in #3898
• bump gc threshold by @jasonwilliams in #3908
• update versions and ABOUT files by @jasonwilliams in #3903
• Cleanup README.md and contributor documentation by @jedel1043 in #3909
• Refactor environment stack to remove some panics by @raskad in #3893

New Contributors

• @robot-head made their first contribution in #3730
• @hansl made their first contribution in #3755
• @NickTomlin made their first contribution in #3793
• @linusg made their first contribution in #3800
• @getong made their first contribution in #3836
• @leoflalv made their first contribution in #3867
• @CrazyboyQCD made their first contribution in #3898

Full Changelog: https://github.com/boa-dev/boa/compare/v0.18...v0.19

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