3 releases

Uses new Rust 2024

0.1.2	Jan 16, 2026
0.1.1	Jan 15, 2026
0.1.0	Jan 15, 2026

#4 in #jsc

MIT license

675KB
15K SLoC

otterjs

A fast TypeScript/JavaScript runtime CLI.

Installation

cargo install otterjs

Usage

# Run a script directly
otter script.ts
otter script.js

# Or with the run command
otter run script.ts
otter run script.ts --watch
otter run script.ts --timeout 5000

Commands

Command	Description
`run <file>`	Execute a TypeScript or JavaScript file
`check <file>`	Type check TypeScript files
`test`	Run tests
`repl`	Start interactive REPL
`install`	Install dependencies from package.json
`add <package>`	Add a dependency
`remove <package>`	Remove a dependency
`init`	Initialize a new project
`info`	Show runtime information

Examples

# Run with watch mode
otter run src/index.ts --watch

# Type check
otter check src/**/*.ts

# Run tests
otter test

# Start REPL
otter repl

# Package management
otter init
otter add lodash
otter install
otter remove lodash

License

MIT

Dependencies

~47–89MB
~1.5M SLoC