v0.0.5

Added

• (generator) suspend on yield in for-of/for-in assignment-target patterns
• (generator) suspend on yield in a destructuring member-target key
• (generator) suspend on yield in destructuring-assignment defaults
• (generator) suspend on yield inside object literals
• (generator) suspend on yield inside array literals
• (builtins) Array and Object are real callable function cells
• (modules) import-defer — exotic-object edges, super/this fixes (+ general)
• (modules) import-defer proposal (core: static import defer * as ns)
• (arraybuffer) immutable-arraybuffer proposal
• (promise) Promise.allKeyed / allSettledKeyed (await-dictionary proposal)
• (object) Symbol/BigInt wrapper objects (ToObject)
• (eval) new.target valid in direct eval inside function code
• (iterators) real %RegExpStringIteratorPrototype% for matchAll
• (iterators) real per-kind iterator prototypes (Array/String/Map/Set)
• (class) TDZ for this in derived constructors (must call super)
• (functions) formal-parameter TDZ (self/forward default reference)
• (functions) separate parameter and body environments
• (eval) EvalDeclarationInstantiation param/arguments conflict
• (eval) direct eval inherits the caller's super (home object)
• (eval) completion values carried through break/continue
• (eval) proper statement completion values (UpdateEmpty)
• (intl) Intl.PluralRules conformance
• (intl) Intl.DurationFormat conformance (+ NumberFormat -0/option fixes)
• (intl) Intl.RelativeTimeFormat conformance
• (intl) Intl.ListFormat conformance
• (class) lexically-scoped private names (#x)
• (modules) module completeness pass (parser, async, namespace, early errors)
• (modules) ES module system + dynamic import()
• (language) explicit resource management (using / await using)
• (builtins) complete getOrInsert/getOrInsertComputed (upsert)
• (builtins) Promise.try (ES2025)
• (builtins) Error.prototype.stack accessor
• (builtins) FinalizationRegistry, WeakRef.prototype.deref, Symbol.prototype
• (builtins) Math.sumPrecise + fix no_std build
• (regex) early errors for inline modifier groups (?ims-ims:)
• (array) property descriptors on indices + length (ArraySetLength)
• (builtins) Error.isError (ES2025) with [[ErrorData]] brand
• (regex) reject invalid \p{…} property escapes as SyntaxError
• (regex) parse-time literal validation + structural early errors
• (builtins) Uint8Array base64/hex (ES2025)
• RegExp.escape + async yield* requires Object iterator
• (async) async yield* delegation (async-iterator protocol)
• (builtins) Array.fromAsync
• (builtins) batch 13 part 2b — Array/RegExp/TypedArray conformance
• (builtins) batch 13 part 2a — Promise/JSON/Object conformance
• (builtins) batch 12 part 2 — String/TypedArray/DataView/Date conformance
• (builtins) sparse-array holes + ES2025 Map/Set conformance
• (nbexec) true lazy async/await with microtask ordering
• (nbexec) wire lazy generators into call/dispatch/iteration
• (nbexec) true lazy generators — explicit-stack suspension engine
• (nbexec) DisposableStack, AsyncDisposableStack, ShadowRealm + SuppressedError
• (intl) real branded .prototype for every Intl service + Locale/DurationFormat
• (intl) realm prototype cache + dispatch wiring for Intl branding
• (nbexec) native subclassing — class extends Map/Array/typed/Date/…
• (nbexec) GetPrototypeFromConstructor for built-in constructors
• (intl) spec-accurate option validation + resolvedOptions for NumberFormat/DateTimeFormat
• (intl) add Intl.getCanonicalLocales + Intl.supportedValuesOf
• (regex) inline modifiers, v-flag unicodeSets, CI word/property + XID
• (builtins) Array/Function/arguments conformance sweep (batch 9 part 2)
• (annexB) escape/unescape, String HTML methods, Date legacy, RegExp compile + legacy statics
• (builtins) Object/Iterator/Proxy/Reflect conformance sweep (batch 8 part 2)
• (typedarray) detachArrayBuffer native + ArrayBuffer/DataView/TypedArray conformance
• (regexp) ES2022 d-flag match indices (MakeIndicesArray)
• (regexp) first-class RegExp.prototype + spec-compliant exec/symbol methods (nbexec)
• (builtins) TypedArray of/from prototype link + spec-faithful from
• (builtins) spec-compliant TypedArray set + subarray (offset ToInteger, species)
• (builtins) TypedArraySpeciesCreate for map/filter/slice; fix construct return
• (builtins) DataView/TypedArray/ArrayBuffer prototype & ctor conformance
• (class) support extending an ordinary function (class X extends fn)
• (super) computed super member access, assignment, and delete
• (assignment) NamedEvaluation for plain identifier assignment
• (global) unify global-object properties and global var bindings
• (class) own name/length + static members as real own properties
• (builtins) Promise/Map/Set/Function/Reflect/Proxy sweep + regression cleanup (batch 6)
• (with) implement the with statement (object environment record)
• (destructuring) NamedEvaluation for binding/param defaults
• (class) inherit methods via prototype + VM prototype-chain reads
• (class) materialize class .prototype with methods/accessors
• (builtins) Array/Object/TypedArray conformance sweep (batch 5)
• (date) Date.prototype[Symbol.toPrimitive] + OrdinaryToPrimitive helper
• (iterator) add the Iterator global, %IteratorPrototype%, and helpers
• (typed-arrays) add BigInt64Array and BigUint64Array
• (nbexec) real eval() and the Function constructor (dynamic code)
• (regex) reject quantifiers on non-quantifiable assertions
• (regex) SyntaxError for invalid group names, duplicate names, bad refs, and u-mode strictness
• (parser) optional-chain tagged template + new.target placement
• (parser) destructuring-target early errors
• (parser) illegal break/continue/return early errors
• (parser) invalid assignment/update targets + strict binding names
• (parser) early-error validation pass for class & private-name rules
• (regex) full Unicode property escapes \p{…}/\P{…} (u-flag)
• (typedarray) add shared %TypedArray% intrinsic constructor hierarchy
• (engine) typed-error API for conformance checking
• (limits) add dedicated max_eval_depth knob (C2 follow-up)

Fixed

• (yield)* propagate an abrupt IteratorClose when forwarding throw to a throw-less iterator
• (yield)* pass the inner result object through; don't read value when incomplete
• (super) RequireObjectCoercible on the super base for object methods
• (proxy) forward trapless has/delete to a proxy target recursively
• (proto) validate the proto setter like SetPrototypeOf
• (Object.prototype) ToObject(this) in hasOwnProperty/propertyIsEnumerable/isPrototypeOf
• (JSON.parse) reject unescaped control characters in strings
• (compound-assign) capture the identifier reference before the RHS
• (with) lexically scope the with-statement object environment
• (parser) allow let as identifier in for-in left-hand side
• (promise) Promise.resolve/reject use NewPromiseCapability for custom C
• (parser) array/object literal contents are [+In] inside a for-header
• (regex) properties of strings are an early error in invalid positions
• (parser/eval) strict-reserved words as sloppy ident refs; direct eval inherits caller strictness
• (Object.assign) spec CopyDataProperties — key order, enumerability, errors
• (Object.assign) Set with Throw + read-only string indices
• (class) PrivateSet on a private method/accessor throws TypeError
• (assignment) ToPropertyKey before RHS in compound member assignment
• (annexB) spec-correct defineGetter/Setter & lookupGetter/Setter
• (iterator) tag boxed String wrapper's @@iterator prototype
• (class) evaluate computed member keys eagerly at class definition
• (nbvm) no-init var re-declaration must not clobber the binding
• (with) bare-name delete + NaN/undefined/Infinity resolve via with-object
• (regex) reject \p{…} property class as a range endpoint under u
• (regex) reject character-class range with low > high
• (regex) reject braced quantifier with nothing to repeat (Annex B)
• (annexB/global) preserve existing global binding + non-configurable decls
• (annexB) B.3.4 if/else function gets its own block binding
• (annexB) B.3.3 block-function hoisting through catch + switch
• (array) spec-conformant Array.prototype.concat
• (async) await adopts thenables (PromiseResolve semantics)
• (async) class async methods + async-generator promise results
• (class) super in static/field initializers + static field/method redecl
• (annexB) spec-accurate B.3.3/B.3.4 block-level function semantics
• (nbvm) route for await to the tree-walker (no bytecode await machinery)
• (destructuring,with) array GetIterator honors Symbol.iterator; with-statement var initializer
• (operators,names) ToNumber via ToPrimitive for update/unary-plus; accessor & class property names
• (fn) scope %ThrowTypeError% caller/arguments poison to restricted functions
• (intl) spec-accurate useGrouping + currency/unit/fraction-digit validation
• (nbexec) computed property keys use ToPropertyKey (throws on uncoercible)
• (nbexec) computed-key method call on a primitive boxes the receiver
• (nbexec) with-binding call this + method-call nullish-base order
• (nbexec) arrow functions capture lexical this/new.target/home at definition
• (nbexec) object-literal proto primitive ignored + super getter receiver this
• (nbexec) BigInt operators unwrap object operands before type-mixing check
• (nbexec) spec evaluation order for compound assignment to member targets
• (nbexec) unresolvable compound-assignment / identifier read throws ReferenceError
• (nbexec) destructuring-assignment target reference evaluated before iterator step
• (nbexec) object-destructuring boxing + delete on globals/non-references
• (nbexec) spec-correct IteratorClose + array-destructuring iterator protocol
• (class) anonymous class NamedEvaluation sets name before static init
• (class) static field initializers run deferred, in order, with this=class
• (class) private methods/accessors are shared per class, not per instance
• (class) class bodies are strict code
• (class) validate non-identifier extends clauses too
• (class) TypeError when extends value is not a constructor or null
• (scope) sloppy implicit global binds on global scope, not current
• (destructuring) object rest invokes own getters once into data props
• (class) TypeError on private accessor missing the needed half
• (object) name Symbol-keyed concise methods ([desc] / empty)
• (class) private-name internal slots, static name/length override, constructor return semantics
• (regexp) build the spec string-method helpers without the regex feature
• (intl) make f16 binary16 helpers no_std-compatible (DataView Float16)
• (builtins) Array/TypedArray toLocaleString invokes element toLocaleString
• (builtins) preserve original-object identity for generic Array callbacks
• (builtins) Array generic ToObject(this) + sort comparefn IsCallable
• (nbexec) make f16 conversions core-friendly; doc-list indent
• (builtins) IsCallable(callbackfn) guard for Array/TypedArray iteration methods
• (builtins) abrupt-propagating coercions in TypedArray/Array index methods
• (super) arrows inherit the enclosing method's super binding
• (assignment) TypeError (not Unsupported) writing a member of null/undefined
• (object) clear attribute flags on property delete
• (class) reserve per-id side-table slots before evaluating members
• (mem) cap Array.from/TypedArray.from array-like length; ulimit guard in runner
• (with) hoist var declarations out of a with body
• (functions) name/length as real own properties
• (destructuring) NamedEvaluation for assignment-pattern defaults (VM)
• (class) propagate throws from computed static member keys
• (functions) bind arguments before parameter defaults
• (class) expose class .name on the bytecode path
• (parser) close parse-phase conformance gaps (templates, comments, private-in)
• (no_std) keep clz32/imul/split/trunc paths std-free; add trunc_toward_zero
• (string) replace/replaceAll/match pattern args ToString fallibly
• (string) split limit ToUint32, undefined separator, empty-string cases
• (string) String.raw handles array-like template.raw with ToLength + ToString
• (string) search/normalize fallible arg ToString, normalize.length=0
• (string) fallible ToString/ToInteger coercion for needle/index/pad args
• (string) fallible index coercion for slice/substring/substr/indexOf; fromCharCode/fromCodePoint ToNumber + RangeError
• (string) position arg ToIntegerOrInfinity + IsRegExp guard, primitive inherited methods
• (string) String.prototype methods coerce this (ToString), thisStringValue; new Object(v)
• (date) user-overridden proto methods, Date.parse human formats + TimeClip, now.length
• (date) generic toJSON, Date/Date.UTC length=7, setters coerce primary arg always
• (date) Date.UTC coercion, instance prototype chain, negative/expanded years, day rollover
• (date) NaN getters return NaN, correct method .length values
• (date) real Date.prototype, set* arg coercion order, TimeClip, constructor coercion
• (math) constants as own props, toStringTag, clz32/imul ToUint32/ToInt32, max/min/hypot full coercion, round large ints, add f16round
• (number) prototype chain, constants as own props, toString/toFixed/toExponential/toPrecision
• (bigint) spec-accurate BigInt() coercion, asIntN/asUintN, toString radix, thisBigIntValue, IsConstructor
• (parser) four for-head / labelled-function over-rejection regressions
• (builtins) TypedArray array-like ctor + 13 descriptor regressions
• (destructuring) lazy iterator + coercion for assignment patterns
• (iteration) drive built-in for-of/spread via a proper iterables path
• (parser) catch-lexical, private object keys, yield-star ASI, static-block await
• (parser) delete-identifier, arrow ASI, with-body, and accessor-arity early errors
• (parser) object-literal, parameter, and catch early errors
• (parser) for-head early errors (bound-name overlap/dup, labelled-fn body, async-of)
• (lexer,parser) early errors for legacy-octal / non-octal-decimal numeric literals
• (parser) close 5 parser regressions (vertical-tilde, static-block arguments, using-for-of)
• (object) spec-conformant ValidateAndApplyPropertyDescriptor + call/super fixes
• (parser/lexer) close parse-phase gaps for import(), escapes, yield/await, using
• (descriptors) merge omitted attributes on redefine; callable length/name own
• (regex) propagate captures from positive lookahead/lookbehind
• (parser) allow Annex B sloppy duplicate FunctionDeclarations in block/switch
• (parser) parse export <decl> as a StatementListItem so export let works
• (parser) let in single-statement position is an ExpressionStatement (sloppy)
• (builtins) precise function descriptors + accessor this-validation

Other

• collapse short let-chain to one line (newer rustfmt)
• cargo fmt + clippy (collapse if-lets, wrap long lines)
• README — pass count 41,146/44,189
• (test262) re-bless ledger (3046 -> 3043 known failures)
• README — pass count 41,143/44,189
• (test262) re-bless ledger (3050 -> 3046 known failures)
• README — pass count 41,139/44,189
• (test262) re-bless ledger (3074 -> 3050 known failures)
• README — pass count 41,115/44,189
• (test262) re-bless ledger (3079 -> 3074 known failures)
• README — pass count 41,110/44,189
• (test262) re-bless ledger (3086 -> 3079 known failures)
• README — pass count 41,103/44,189
• (test262) re-bless ledger (3110 -> 3086 known failures)
• README — pass count 41,079/44,189
• (test262) re-bless ledger (3164 -> 3110 known failures)
• README — pass count 41,025/44,189
• (test262) re-bless ledger (3166 -> 3164 known failures)
• README — pass count 41,023/44,189
• (test262) re-bless ledger (3175 -> 3166 known failures)
• README — pass count 41,014/44,189
• (test262) re-bless ledger (3179 -> 3175 known failures)
• README — pass count 41,010/44,189
• (test262) re-bless ledger (3185 -> 3179 known failures)
• README — pass count 41,004/44,189
• (test262) re-bless ledger (3191 -> 3185 known failures)
• README — pass count 40,998/44,189
• (test262) re-bless ledger (3202 -> 3191 known failures)
• README — pass count 40,987/44,189
• (test262) re-bless ledger (3240 -> 3202 known failures)
• README — pass count 40,949/44,189
• (test262) re-bless ledger (3241 -> 3240 known failures)
• README — pass count 40,948/44,189 (latest bless 3241 fails)
• (test262) re-bless ledger (3260 -> 3241 known failures)
• README — pass count 40,929/44,189 (latest bless 3260 fails)
• (test262) re-bless ledger (3269 -> 3260 known failures)
• README — pass count 40,920/44,189 (latest bless 3269 fails)
• (test262) re-bless ledger (3290 -> 3269 known failures)
• README — pass count 40,899/44,189 (latest bless 3290 fails)
• (test262) re-bless ledger (3313 -> 3290 known failures)
• README — pass count 40,876/44,189 (latest bless 3313 fails)
• (test262) re-bless ledger (3335 -> 3313 known failures)
• README — pass count 40,854/44,189 (latest bless 3335 fails)
• (test262) re-bless ledger (3401 -> 3335 known failures)
• README — pass count 40,788/44,189 (latest bless 3401 fails)
• (test262) re-bless ledger (3447 -> 3401 known failures)
• README — pass count 40,742/44,189 (latest bless 3447 fails)
• (test262) re-bless ledger (3512 -> 3447 known failures)
• README — pass count 40,677/44,189 (latest bless 3512 fails)
• (test262) re-bless ledger (3547 -> 3512 known failures)
• README — pass count 40,626/44,189 (latest bless 3563 fails)
• (test262) re-bless ledger (3571 -> 3563 known failures)
• (test262) re-bless ledger (3575 -> 3571 known failures)
• README — pass count 40,614/44,189 (latest bless 3575 fails)
• (test262) re-bless ledger (3580 -> 3575 known failures)
• README — pass count 40,609/44,189 (≈92%, latest bless 3580 fails)
• (test262) re-bless ledger (3609 -> 3580 known failures)
• (test262) re-bless ledger (3646 -> 3609 known failures)
• README — pass count 40,558/44,189 (latest bless)
• (test262) re-bless ledger (3651 -> 3646 known failures)
• README — pass count 40,553/44,189 (latest bless)
• (test262) re-bless ledger (3678 -> 3651 known failures)
• README — pass count 40,527/44,189 (latest bless)
• (test262) re-bless ledger (3703 -> 3678 known failures)
• README — pass count 40,502/44,189 (latest bless)
• (test262) re-bless ledger (3727 -> 3703 known failures)
• README — pass count 40,478/44,189 (latest bless)
• (test262) re-bless ledger (3759 -> 3727 known failures)
• (test262) re-bless ledger (3782 -> 3759 known failures)
• README — pass count 40,423/44,189 (latest bless)
• (test262) re-bless ledger (3810 -> 3782 known failures)
• README — pass-rate figures 40,395/44,189 (latest bless)
• (test262) re-bless ledger (3964 -> 3810 known failures)
• README — pass-rate ≈91% (40,241/44,189) + recent conformance areas
• (test262) re-bless ledger (4042 -> 3964 known failures)
• (test262) re-bless ledger (4098 -> 4042 known failures)
• (test262) re-bless ledger (4274 -> 4098 known failures)
• drop accidentally-committed pycache bytecode + gitignore it
• update curated tests for tightened conformance + enabled modules
• bump intl 0.4 -> 0.5
• (test262) re-bless ledger (4419 -> 4274 known failures)
• cargo fmt + fix rustdoc private-item links (CI gate)
• bless workflow rebases before pushing the ledger
• workflow_dispatch job to re-bless the Test262 ledger
• README — pass-rate ≈ 90%
• ROADMAP — mark ES modules + explicit resource management landed
• refresh ROADMAP + README to current engine state
• (test262) surface Test262Error message in typed throws
• (test262) refresh ledger after async/async-gen fix batch
• (test262) refresh ledger after batch 13 part 2 (Promise/JSON/Object + Array/RegExp/TypedArray)
• (test262) refresh ledger after batch 13 part 1 (AnnexB block-fns + class static super)
• (test262) refresh ledger after batch 12 part 2 (String/TypedArray/DataView)
• (test262) refresh ledger after batch 12 part 1 (async/await + array holes + Map/Set)
• (test262) refresh ledger after batch 11 (lazy generators, DisposableStack, parser)
• close parse-phase early-error gaps + fix regex-after-} lexing
• (test262) refresh ledger after prototype/branding model
• (test262) refresh ledger after batch 10 part 2 (language operators/caller)
• (test262) refresh ledger after batch 10 part 1 (RegExp engine + intl402)
• (test262) refresh ledger after batch 9 part 2 (Array/Function/arguments)
• (test262) refresh ledger after batch 9 part 1 (AnnexB + language)
• (test262) refresh ledger after batch 8 part 2 (Object/Iterator/Proxy/Reflect)
• (test262) batch 8 part 1 — language core + TypedArray/detach
• (test262) refresh ledger after RegExp.prototype sweep (batch 7 complete)
• (test262) refresh ledger after full Array/DataView/TypedArray sweep
• (test262) refresh ledger after batch 7 (language core + TypedArray/DataView)
• (nbexec) move the cfg(test) tests module into nbexec/tests.rs
• (nbexec) split the Interp impl into cohesive submodules
• (nbexec) git mv nbexec.rs to nbexec/mod.rs
• (test262) refresh ledger after batch 6 (language core, Promise/collections, parser)
• (test262) refresh ledger after batch 5 (builtin sweeps)
• remove test runner helper script
• cargo fmt
• (test262) refresh ledger after batch 4 (iterators, TypedArray ctor, parser)
• cargo fmt
• (parser) fix doc-comment formatting for clippy doc_lazy_continuation
• (test262) refresh ledger after batch 3 (Object descriptors, BigInt arrays, parser/lexer)
• (test262) refresh ledger after batch 2 (eval/Function, parser fixes, advanced regex)
• (regex) drop unused saw_named_group field
• (parser) cover let single-statement position and Annex B fn redeclaration
• (test262) refresh ledger after batch 1 (descriptors, regex \p, parser strictness)
• (parser) document jump/target/new.target/optchain rules in validate
• (test262) refresh ledger after %TypedArray% intrinsic
• (test262) conformant official-corpus runner + baseline + nightly CI
• (test262) vendor the official tc39/test262 corpus as a pinned submodule
• prune value-reachable GC side-tables as weak-key maps (H/GC)
• add ephemeron (weak-key) marking primitive + split sweep (H/GC)
• (ic) wire the inline cache into bytecode GetProp/SetProp (H1)
• (ic) add IC fast-path accessors for property read/write (H1)