Execute JavaScript in a WebAssembly QuickJS sandbox

In plain words

This TypeScript package executes JavaScript code in a secure WebAssembly sandbox using the QuickJS engine, designed for running untrusted code safely. It supports virtual file systems, custom Node modules, HTTP requests via a fetch client, and includes a built-in test runner with chai assertions. The lightweight QuickJS engine provides fast performance while maintaining isolation, making it suitable for developers who need to execute and manage untrusted JavaScript within TypeScript applications.

written from the facts on this page · September 2026

From the sources

A typescript package to execute JavaScript and TypeScript code in a webassembly quickjs sandbox - sebastianwessel/quickjs

In the maker’s words, at launch

This TypeScript package allows you to safely execute JavaScript code within a WebAssembly sandbox using the QuickJS engine. Perfect for isolating and running untrusted code securely, it leverages the lightweight and fast QuickJS engine compiled to WebAssembly, providing a robust environment for code execution.…

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