Hako

lastmod 2025-05-09created 2025-05-092 edits

An embeddable, high-performance, lightweight JavaScript engine

Features

• A lightweight JavaScript engine based on PrimJS, compiled to WebAssembly for safety and excellent portability
• Security and extensibility through a strong sandbox architecture offering memory safety and JavaScript feature restrictions, plus a "fail-fast" philosophy
• Can run hundreds of VMs in parallel even on a single machine, with configurable memory and compute (gas) limits for scripts
• Embeddable on almost any platform as a single .wasm file, without complex builds or FFI, and very small at about 800KB
• Up to 28% better performance than QuickJS, with native-level execution speed in JIT environments

See also

• JavaScript engine
• JavaScript
• PrimJS
• QuickJS

Favorite site

• Github - andrewmd5/hako
• Hako - by Andrew Sampson - ./make
• Hako - An embeddable, high-performance, lightweight JavaScript engine | GeekNews