Wasmer Announces "Edge.js", Achieving Higher Density and Faster Startup Than Containers with Node.js Compatibility

Wasmer announced Edge.js, a Node.js-compatible WebAssembly sandbox.

It provides safe isolation for Node.js apps without using Docker or container-based virtualization; JavaScript runs sandboxed by default with optional extra protections.

The JavaScript engine is pluggable — currently V8; Wasmer plans support for JavaScriptCore or QuickJS.

Edge.js leverages the Node.js ecosystem so frameworks like Next.js and Astro run unchanged; it follows WinterJS work, which lacked Node.js compatibility.

Wasmer describes Edge.js as an efficient, secure runtime; development used AI and completed in a few weeks.