PyPI · #1588 most downloaded on PyPI

jsii

1.141.08.2M downloads/moaws/jsii ↗New releases in your daily digest, changelog included.

Python client for jsii runtime

Last release 2 days ago
01 Oct 2026
Ships fairly regularly
a new release about every 2 weeks
Nearly every release is documented
notes for 55 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
8 years old
210 releases · first in 2019

Release timeline

210 releases since 2019

20192020202120222023202420252026

Releases

0.17.018 Sept 2019
dotnet: fix deep type conversion across the process boundary, intelisense docs, set target to netcoreapp2.1
Bug Fixes

dotnet: fix deep type conversion across the process boundary, intelisense docs, set target to netcoreapp2.1 (#772) (ecf8d3b)

kernel: stack overflow in KernelHost.run() (#780) (41a8c2f), closes #778

Features

java: Indicate if method param is required (#762) (cb7e11f), closes #365

java: use immutable java implementations of JSII primitive collection types array and map (#765) (5e713e3)
Open source →

Bug Fixes

dotnet: Fix property set for nested Dictionaries (#736) (04bab47)
jsii-diff: handle violations in Enums (#730) (934b5c8)
kernel: correctly serialize enum values (#754) (41ed25d), closes #753

Features

dotnet: [JsiiOptional] attribute on properties that are optionals + Roslyn Analyzer (#717) (bece042)
dotnet: drop the useless I prefix for non datatype interfaces (#728) (b9621f1), closes #109
dotnet: Support for JSII_DEBUG and JSII_RUNTIME (#724) (1816740)
jsii: improve locality of warnings emitted for reserved words (#739) (e762da6)
superchain: bundle which in the Docker image (#751) (50c9152)
superchain: ship with openssl CLI tools (#740) (9fb32ad)

BREAKING CHANGES

dotnet: names of .NET behavioral interfaces have changed (the duplicate prefix I was removed).

Open source →

0.15.118 Aug 20192 sources agree

dotnet: add missing GetInterfaceType in the .NET runtime

Bug Fixes

dotnet: add missing GetInterfaceType in the .NET runtime (#703) (56617b1)
superchain: fix python distribution due to old setuptools (#709) (b37790d), closes #708

Features

java: detect & rename members named after reserved words (#705) (32bc117)
jsii: emit warnings when using reserved words (#704) (ca44537), closes #701
python: check distribution artifacts with twine (#711) (f3d1da0), closes #710

Open source →

0.15.012 Aug 20192 sources agree

dotnet: stop mutating Dictionary when iterating on it (#691) (8aedfc9), closes #690

Bug Fixes

dotnet: stop mutating Dictionary when iterating on it (#691) (8aedfc9), closes #690
java: improve property override detection (#692) (d90b304)

Features

dotnet: handling optional and variadic parameters (#680) (e8b5a35), closes #153 #210
java: overhauled structs with native implementation, builders, ... (#694) (b0b3fd2), closes #525
java: remove dependency on google Guava (#681) (e86bfdc)
superchain: add mono toolchain (#687) (3defca3)

Open source →

0.14.118 Jul 20192 sources agree

build: fix python runtime BaseProvider signatures

Bug Fixes

build: fix python runtime BaseProvider signatures (#601) (6526469)
kernel: validate presence of required struct properties (#591) (90135f9)

Features

jsii: configure outDir and rootDir for tsc (#593) (21855e2)
jsii-diff: also check stability transitions (#592) (15f77b5)
add support for "external" stability (#596) (dd66afb)

Open source →

0.12.125 Jun 2019

kernel: properly deserialize structs passed in byref (#554) (1e89aab), closes #553

Bug Fixes

kernel: properly deserialize structs passed in byref (#554) (1e89aab), closes #553

Open source →

Additional notes

Bug Fixes

kernel: properly deserialize structs passed in byref (#554) (1e89aab), closes #553

0.12.0 (2019-06-24)

Bug Fixes

jsii: Validate overriding does not affect optionality (#549) (8c826c1)
python: parameter names in docstrings should be snake_case, not camelCase (#539) (a91a315)

Features

jsii: enforce enum member names to be ALL_CAPS (#541) (c88080d), closes awslabs/aws-cdk#2287
jsii-diff: extend reporting options (#547) (719be24)

BREAKING CHANGES

jsii: Enum members are now expected to be ALL_CAPS

Open source →

0.12.024 Jun 2019

jsii: Validate overriding does not affect optionality

Bug Fixes

jsii: Validate overriding does not affect optionality (#549) (8c826c1)
python: parameter names in docstrings should be snake_case, not camelCase (#539) (a91a315)

Features

jsii: enforce enum member names to be ALL_CAPS (#541) (c88080d), closes awslabs/aws-cdk#2287
jsii-diff: extend reporting options (#547) (719be24)

BREAKING CHANGES

jsii: Enum members are now expected to be ALL_CAPS

Open source →

0.11.319 Jun 20192 sources agree

jsii-reflect: Expose Assembly metadata field

Features

jsii-reflect: Expose Assembly metadata field (#542) (9b35e98)

Bug Fixes

jsii: Correctly handle singleton enums (#535) (01aed03), closes #231
jsii: Correctly ignore private properties from ctor (#531) (e804cab)

Open source →

0.11.17 Jun 2019

jsii-diff: crash when changing method to a property (#521) (28241cd), closes #520

Bug Fixes

jsii-diff: crash when changing method to a property (#521) (28241cd), closes #520
jsii-pacmak: retry .NET build a couple of times (#509) (d1ef618)
python: support variadic arguments (#513) (695ca6b)

Features

Register module-level stability (#515) (efae447), closes awslabs/cdk-ops#367
jsii: Propagate stability to members (#522) (20507e6)
jsii-spec: Add optional metadata field (#512) (10e2bfe)

Open source →

Additional notes

Bug Fixes

jsii-diff: crash when changing method to a property (#521) (28241cd), closes #520
jsii-pacmak: retry .NET build a couple of times (#509) (d1ef618)
python: support variadic arguments (#513) (695ca6b)

Features

Register module-level stability (#515) (efae447), closes awslabs/cdk-ops#367
jsii: Propagate stability to members (#522) (20507e6)
jsii-spec: Add optional metadata field (#512) (10e2bfe)

0.11.0 (2019-05-21)

Bug Fixes

assembler: handle unknown types without crashing (#501) (7ba1aab)
jsii: deduplicate interfaces (#497) (05f5189), closes #496
jsii-diff: catch exception if type disappeared from other assembly (#504) (8d11900)
jsii-diff: correctly handle assignability of type unions (#500) (04c061e)
jsii-diff: don't fail on new packages (#502) (d1d0633)

Features

jsii: protect against prohibited member names (#506) (2848f76)

BREAKING CHANGES

jsii: The equals and hashCode method names may no longer be used on JSII classes and interfaces, due to their colliding with "special meaning" methods in other languages (Java, .NET, ...).

0.11.021 May 2019

assembler: handle unknown types without crashing

Bug Fixes

assembler: handle unknown types without crashing (#501) (7ba1aab)
jsii: deduplicate interfaces (#497) (05f5189), closes #496
jsii-diff: catch exception if type disappeared from other assembly (#504) (8d11900)
jsii-diff: correctly handle assignability of type unions (#500) (04c061e)
jsii-diff: don't fail on new packages (#502) (d1d0633)

Features

jsii: protect against prohibited member names (#506) (2848f76)

BREAKING CHANGES

jsii: The equals and hashCode method names may no longer be used on JSII classes and interfaces, due to their colliding with "special meaning" methods in other languages (Java, .NET, ...).

Open source →

0.10.324 Apr 20192 sources agree

java: fix illegal arguments passed to JavaDoc generator

Bug Fixes

java: fix illegal arguments passed to JavaDoc generator (#475) (4456138)
jsii-diff: be nicer about validation errors (#481) (fa4d000)
python: fix indentation for multiline bullets in RST generator (#479) (3a79142), closes #478
python: maintain inheritance chain for structs (#482) (607f151), closes #473

Features

jsii-pacmak: add Python docstrings (#470) (6cd4903)

Open source →

0.10.017 Apr 20192 sources agree

exit with non-zero exit code if there are compilation errors (#442) (6265bf6), closes #383 #441

Bug Fixes

exit with non-zero exit code if there are compilation errors (#442) (6265bf6), closes #383 #441
dotnet: fix doc comment model parsing in .NET generator (#455) (ae85aa5)
java: Stop using Streams to render params (#459) (a5e8a93)
jsii: check that static and nonstatic members don't share a name (#430) (a0741cc), closes #427
jsii: flatten out dependency list (#454) (ebdd10d), closes #453
jsii-reflect: don't load same assembly multiple times (#461) (3a6b21c)
jsii-spec: show deep validation errors (#452) (4d84e0b)
kernel: Set this in static contexts (#460) (c81b4c1), closes awslabs/aws-cdk#2304
pacmak: fix Maven dependency collector. (#449) (675b86a), closes #447

Features

jsii-spec: Model parameter optionality (#432) (21e485a), closes #296 #414

BREAKING CHANGES

jsii-spec: JSII assemblies generated by older versions of the tool will fail loading with this new version, and vice-versa. Re-compile your projects in order to fix this.

Open source →

0.9.04 Apr 20192 sources agree

jsii: Prohibit illegal uses of structs (aka data types) (#418) (8ff9137), closes #287

Bug Fixes

jsii: Prohibit illegal uses of structs (aka data types) (#418) (8ff9137), closes #287

Features

jsii: check that referenced @params exist (#431) (265c304), closes #422
jsii: Enforce use of peerDependencies (#421) (e72fea5), closes #361
jsii: Erase un-exported base classes instead of prohibiting those (#425) (d006f5c), closes #417
jsii: Erase un-exported base interfaces instead of prohibiting those (#426) (afbabff), closes #417
jsii: record source locations in assembly (#429) (e601c0c)
jsii: Tag the jsii compiler version in the .jsii assemblies (#420) (42dece1), closes #412
jsii-diff: standardize doc comments, add API compatibility tool (#415) (9cfd867)
kernel: Normalize empty structs to undefined (#416) (a8ee954), closes #411

BREAKING CHANGES

jsii: All direct dependencies must be duplicated in peerDependencies unless they are in bundledDependencies.

Open source →

0.8.228 Mar 20192 sources agree

kernel: Transitively consider properties when deserializing structs

Bug Fixes

kernel: Transitively consider properties when deserializing structs (#409) (66789e8)
python: Lift the entire data class hierarchy (#408) (f813620)

Features

python: Add support for synchronous callbacks (#407) (4cb91b3)

Open source →

0.8.128 Mar 2019

kernel: make type serialization explicit and recursive (#401) (0a83d52), closes awslabs/aws-cdk#1981

Bug Fixes

kernel: make type serialization explicit and recursive (#401) (0a83d52), closes awslabs/aws-cdk#1981
runtime: Passing 'this' to a callback from constructor (#395) (850f42b)

Open source →

Additional notes

Bug Fixes

kernel: make type serialization explicit and recursive (#401) (0a83d52), closes awslabs/aws-cdk#1981
runtime: Passing 'this' to a callback from constructor (#395) (850f42b)

0.8.0 (2019-03-20)

Bug Fixes

jsii: prohibit exported const enums (#372) (5a94825), closes awslabs/aws-cdk#1969
jsii: show jsii diagnostics in watch mode and support $tsc problem matcher (#383) (0275944), closes #382
copy non-hidden bases when erasing hidden interfaces (#392) (5af84b6), closes #390
Fix Async function support in Python (b5d49de)
Fix permissions error in pipeline when generating Python runtime (af1346f)
Proxy interface literals in the generated Python code (10242eb)
Python's abstract class proxies now inherit from parent's proxy (6f1c9c0)

Features

Add Python Support (cc3ec87)
internal accessibility (#390) (e232cb5), closes #287 #388
pass data types (structs) by-value instead of by-ref (#376) (db3ccdf), closes awslabs/aws-cdk#965 #375

BREAKING CHANGES

all properties in interfaces which represent data types must be marked as readonly. Otherwise, jsii compilation will fail.
member names that begin with underscore now must be marked as "@internal" in their jsdocs, which will cause them to disappear from type declaration files and jsii APIs.

Open source →

0.8.024 Mar 2019

jsii: prohibit exported const enums (#372) (5a94825), closes awslabs/aws-cdk#1969

Bug Fixes

jsii: prohibit exported const enums (#372) (5a94825), closes awslabs/aws-cdk#1969
jsii: show jsii diagnostics in watch mode and support $tsc problem matcher (#383) (0275944), closes #382
copy non-hidden bases when erasing hidden interfaces (#392) (5af84b6), closes #390
Fix Async function support in Python (b5d49de)
Fix permissions error in pipeline when generating Python runtime (af1346f)
Proxy interface literals in the generated Python code (10242eb)
Python's abstract class proxies now inherit from parent's proxy (6f1c9c0)

Features

Add Python Support (cc3ec87)
internal accessibility (#390) (e232cb5), closes #287 #388
pass data types (structs) by-value instead of by-ref (#376) (db3ccdf), closes awslabs/aws-cdk#965 #375

BREAKING CHANGES

all properties in interfaces which represent data types must be marked as readonly. Otherwise, jsii compilation will fail.
member names that begin with underscore now must be marked as "@internal" in their jsdocs, which will cause them to disappear from type declaration files and jsii APIs.

Open source →