Features

• ability to send Java stack traces to the host (#5158) (45c50ba)
• propagate host-language stack traces through the jsii protocol (#5153) (6d28fc7)
• kernel: ~67% faster assembly loading via a runtime index by @mrgrain in #5164

Bug Fixes

• kernel: improve performance by ~10% by deferring error-context and cache serialization values (#5162) (69f2c2b)
• python: typeguard check runs on every call instead of once per process (#5169) (d9b804b)
• sibling module dependencies are eagerly loaded even if only for type annotations (#5172) (6088919)

Features

• add support for jsii-rosetta 6.0 (#5154) (8f4d9f5)

⚠ BREAKING CHANGES

• python: require Python 3.10+ in modules and update runtime dependencies (#5135)

Features

• replace eager submodule imports with lazy loading (#5110) (2ad8838), closes 40jsii/python-runtime/tests/test_compliance.py#L1331

Bug Fixes

• centralize and lazy-load typeguard to improve Python import times (#5137) (f768c2f)
• java-runtime: javax.annotation-api leaks onto consumers' runtime classpath (#5140) (97f68da), closes #5136
• java-runtime: org.jetbrains:annotations leaks onto consumers' runtime classpath (#5136) (16727a6)
• pacmak: annotation deps leak onto consumers' runtime classpath (#5146) (4b9f3c0), closes #5136 #5140
• python: require Python 3.10+ in modules and update runtime dependencies (#5135) (e14cd30), closes #5094 #5130

⚠ BREAKING CHANGES

• python: require Python 3.10+ in modules and update runtime dependencies (#5135)

Features

• replace eager submodule imports with lazy loading (#5110) (2ad8838), closes 40jsii/python-runtime/tests/test_compliance.py#L1331

Bug Fixes

• java-runtime: org.jetbrains:annotations leaks onto consumers' runtime classpath (#5136) (16727a6)
• python: require Python 3.10+ in modules and update runtime dependencies (#5135) (e14cd30), closes #5094 #5130

Bug Fixes

• kernel: forward only declared arguments to language overrides (#5126) (8945287), closes #5125
• kernel: unsafe JSON.stringify on circular arguments hides original error (#5125) (8f00f85)

Bug Fixes

• jsii-diff: npm: argument type can be shell-injected (#5118) (9f42f27)

⚠ BREAKING CHANGES

• Python 3.9 is no longer supported. The minimum required
  Python version is now 3.10. Python 3.9 reached end-of-life in October

Changes:

• CI matrix: baseline Python changed from 3.9 to 3.10, removed dedicated
  Python 3.9 test entry
• Generated code: python_requires bumped from ~=3.9 to ~=3.10, pyright
  pythonVersion set to 3.10
• Runtime: pyright and black target versions updated
• Dev dependencies: mypy bumped to 2.1.0 (requires Python >= 3.10)
• Snapshots updated to reflect new version constraints

Snapshots changed during test run with: yarn test:update. Run using
jsii-superchain.

Features

• drop Python 3.9 support, require Python >= 3.10 (#5094) (d17bb06), closes #5084

Bug Fixes

• jsii-pacmak: conditionally install mypy based on Python version (#5093) (32090f1), closes #5084

Bug Fixes

• kernel: clean up resolved promises from #promises map (#5054) (e1766bd)

Bug Fixes

• jsii-pacmak: remove GOSUMDB=off from Go target (#5044) (0dbfb03)
• spec: bundle validators to inline ajv runtime dependencies (#5040) (f423bb6)
• spec: pre-compile JSON schema validators at build time (#5039) (43f0ec3)