The JerryScript team proudly announces JerryScript 3.0.0 release.

A short list of changes/improvements:

• 343 commits by 41 authors since JerryScript 2.4.0 release
• 84% conformance on Test262 ES2020
• Kangax 2016+ (ES2025) coverage improved from 45% to 70% (Kangax Compatibilty Table)
• Binary size increased due to the implementation of a lot of new language features
• Fixed several bugs including security issues
• New language feature:
  • Dynamic Import
  • Instance class fields
  • Logical Assignment (&&=, ||=, ??=)
  • Native Module
  • Optional chaining (?.)
  • Private class method
  • Static class fields
  • Static initialization block
• Supported new builtin methods:
  • Atomics
  • function.toString operation
  • Object.hasOwn
  • Partial support for WeakReferences
  • Promise.allSettled and Promise.Any
  • SharedArrayBuffer
• API rework
  • Resolved inconsistencies in APIs.
  • Adopted a unified naming scheme (Issue #4186).
• Better windows support
• Enhanced Python 3 compatibility
  • Dropped Python2 support due to its end of life
• Updated and improved documentation