Releases

New features and capabilities

JavaScript engine migrated from Duktape to QuickJS-NG v0.11.0, with modern
JavaScript syntax and native Promise/job-queue support.
Added dukpy.run(path, **kwargs) and JSInterpreter.run(path, **kwargs);
the dukpy CLI uses this file runner. run() supports native ESM static
import/export, import.meta.url, import.meta.main, and top-level
await.
File entrypoints use Node-like classification: .mjs is ESM, .cjs is
CommonJS, and .js follows the nearest package.json "type" of module
or commonjs. Package-less ambiguous .js files are probed by compiling the
CommonJS wrapper first, then native ESM; source text is not scanned.
The QuickJS CommonJS runtime supports require, module, exports,
__filename, and __dirname. Its cache is shared with ESM/CommonJS interop,
and failed modules are removed so they can be retried.
ESM can import CommonJS: the default export is module.exports; the only
named exports are module, exports, and require. Named exports are not
inferred from CommonJS source.
Node-like fs, path, url, querystring, and punycode shims remain
available.
Promise microtasks drain before result serialization; Promise failures during
evaluation or serialization raise JSRuntimeError.
Python callbacks preserve argument order and JSON types, support Unicode names
and Unicode/emoji values, map None returns to JavaScript undefined, and
turn missing callbacks and Python exceptions into catchable ReferenceError
and InternalError, respectively.
Result conversion more closely follows JSON.stringify: null, undefined,
NaN, Infinity, and -Infinity map to Python None; circular references
and BigInt conversion failures raise runtime errors.
Stack exhaustion and oversized allocations raise runtime errors, Python signal
exceptions propagate, and blocking Atomics.wait is disabled.
The npm installer uses HTTPS for registry and tarball URLs; rejects unsafe tar
paths, path traversal, multiple roots, unsupported entries, and symlink
destination escapes; and reports missing metadata, versions, and tarball URLs
more clearly.
Bundled TypeScript was upgraded to 5.7.3.

No longer available and behavior changes

Generic Babel support was removed: dukpy.babel_compile, dukpy.webassets.BabelJS, and the babeljs WebAssets filter are unavailable; bundled Babel remains only for JSX transpilation.
CoffeeScript support, including dukpy.coffee_compile, was removed.
Duktape and its Duktape global, Duktape.modSearch, module system, error
wording, and stack formatting are gone; code relying on them must use DukPy's
QuickJS/CommonJS behavior and update exact-message expectations.
Python versions below 3.9 are unsupported; 0.6.0 requires Python >=3.9,
and old Python 2 compatibility 8000 code is gone.
The old dukpy/run.py module is removed. Use dukpy.run(...); code importing
main from dukpy.run breaks. The dukpy console command remains and now
targets dukpy.cli:main.
evaljs() remains script-only and does not auto-detect ESM syntax; run static
import/export through dukpy.run() file entrypoints.
CommonJS module IDs now use canonical file-like IDs with extensions and
forward slashes, so exact old module.id or require.id strings may differ.
require('x.mjs') and require() of .js files classified as ESM fail; use
ESM import/dukpy.run(). CommonJS named imports are unsupported unless they
are module, exports, or require; use the default import for its API.
Top-level functions and Symbols now raise Invalid Result Value; undefined,
NaN, and infinities map to None, and Duktape-specific or formerly {}
results may differ.
The installer rejects HTTP registry or tarball URLs, tarballs with symlinks,
path traversal, multiple roots, or unsupported entries, and symlinked
destinations.

What's Changed

Support Python 3.13
Support Python 3.14

Full Changelog: 0.5.0...0.5.1

@amol-

What's Changed

Upgrade duktape to 50af773 by @amol- in https://github.com/amol-/dukpy/pull/81
Testing and binary distribution for Python 3.13

Full Changelog: 0.4.0...0.5.0

@dknowles2

What's Changed

Build wheels for linux-aarch64 by @dknowles2 in https://github.com/amol-/dukpy/pull/77
fix: prevent crash with unicode emoji (e.g. 🏠) by @robinvandernoord in https://github.com/amol-/dukpy/pull/78
Switched to CESU-8 for encoding by @amol- in https://github.com/amol-/dukpy/pull/79

New Contributors

@dknowles2 made their first contribution in https://github.com/amol-/dukpy/pull/77
@robinvandernoord made their first contribution in https://github.com/amol-/dukpy/pull/78

Full Changelog: 0.3.1...0.4.0

@pandasauce

What's Changed

Python 3.12 officially supported
Emit the function name when Python callback fails by @pandasauce in https://github.com/amol-/dukpy/pull/72

New Contributors

@pandasauce made their first contribution in https://github.com/amol-/dukpy/pull/72

Full Changelog: 0.3.0...0.3.1

Upgrade to duktape engine 2.7.0
Support for installing nodejs modules where the root distribution directory is not named package.
Better error message when a Python function is not found
GitHub Actions based release workflow, wheels are now automatically generated for more versions.
Wheels for Apple Silicon (M1) are now provided.
Support for Python 2.7, 3.5 and 3.6 is deprecated. DukPy might still work, but it's untested.

Test release to verify wheels building and uploading

Support for Python 3.8
Testuite now based on pytest instead of nose
Deprecated support for Python 2.6 and 3.4
Updated included babel version to 6.26.0

Fix a memory leak in dukpy.evaljs

State compatibility with Python 3.7
Provide wheels for Python 3.7
Fix building wheel from source distribution

0.6.0

New features and capabilities

No longer available and behavior changes

Uh oh!

Version 0.5.1

What's Changed

Uh oh!

Version 0.5.0

What's Changed

Contributors

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Version 0.4.0

What's Changed

New Contributors

Contributors

Uh oh!

Version 0.3.1

What's Changed

New Contributors

Contributors

Uh oh!

Version 0.3.0

Uh oh!

wheels-test

Uh oh!

Version 0.2.3

Uh oh!

Version 0.2.2

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Version 0.2.1

Uh oh!