aws/jsii
jsii allows code in any language to naturally interact with JavaScript classes. It is the technology that enables the AWS Cloud Development Kit to deliver polyglot libraries from a single codebase! observed · 2026-08-28
Health v2 · maintenance only
99/100
- Activity 99
- Release rhythm 99
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 13.5
- age_days: 3255
- days_rel: 9
- days_push: 7
- n_releases_24m: 37
Adoption not part of the score
2866 stars · 268 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
jsii is a toolchain that lets TypeScript class libraries be consumed natively from Python, Java, C#/.NET, Go, and JavaScript by generating idiomatic bindings for each target language. It is the technology behind the AWS CDK's polyglot libraries.
Use cases
- generate python java and dotnet libraries from a typescript codebase
- build a cdk construct library for multiple languages
- make my typescript sdk usable from python and java
- create polyglot infrastructure-as-code libraries
- cross-language bindings for a javascript class library
When to choose
- you maintain a TypeScript library that must be published to multiple language ecosystems with identical APIs
- you are building AWS CDK constructs or similar developer/build tooling
- you want one source of truth for your API across languages
When to avoid
- performance-sensitive or resource-constrained applications, due to JSON marshaling overhead and lack of distributed garbage collection
- you only need bindings for a single target language
- your API relies on JavaScript-specific runtime semantics that do not translate cleanly
Facets
library · maturity active
compiler sdk developer-tools developer-tools cross-platform programming-languages cloud-computing python jvm dotnet go cross-platform polyglot-bindings aws-cdk typescript-to-native interop code-generation nodejs typescript
2 sources
- readme: https://github.com/aws/jsii · fetched 2026-08-28 · ddc30bc0783c
- homepage: https://aws.github.io/jsii · fetched 2026-08-29 · 6205ae706e54
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| aws/jsii | main | 99 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem