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ZeltJS

Portable application framework with DI — swap adapters for different runtimes

Simple, Intuitive API

Why Zelt?

Run Anywhere

Node, Bun, Workers, Lambda — portable across runtimes.

DI Built-in

First-class dependency injection, type-safe.

Fast Startup

Minimal wake-up time, serverless-ready.

Future-proof Decorators

TC39 & reflect-metadata dual support.

Test-friendly

DI-based testing, easy mock injection, Testcontainers integration.

Minimal Size

Tree-shakable, loads only what you need — no unused dependencies.

Benchmark

Performance comparison with popular TypeScript frameworks

Requests/sec

Higher is better

Cold Start (ms)

Lower is better

Get Started in Seconds

npm install @zeltjs/core
Read the Documentation →