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v0.21

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@jedel1043 jedel1043 released this 21 Oct 23:21
· 65 commits to main since this release
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In this release, our conformance has grown to 94.12% in the official ECMAScript Test Suite (Test262).

Highlights

  • Polished our implementation of the Temporal proposal to reach ~97% conformance on Temporal-related tests.
  • Added support for span nodes and error backtraces.
  • Enhanced Boa's compatibility with async Rust by revamping JobQueue and asyncifying ModuleLoader.
  • Introduced a new set of macros to facilitate creating ECMAScript values, classes and modules from Rust code.
  • Implemented several runtime features in boa_runtime, including fetch, setTimeout, and queueMicrotask.
  • Added some support for conformance testing runtime features against the Web Platform Tests (WPT).
  • JsValue now uses a Nan-boxing representation, reducing the memory footprint of the engine.
  • Migrated from a stack-based VM to a register based VM.

New built-ins

  • Implemented Atomics.waitAsync.
  • Implemented new Set methods.
  • Implemented Float16 support in TypedArray, Dataview and Math built-ins.
  • Implemented Error.isError.
  • Implemented Math.sumPrecise.
  • Implemented Array.fromAsync.

Changelog