@adminide-stack/aieditor-core

JS worker evaluates arbitrary JS code in a safe sandbox. Check main.ts as an entry point to the code.

We define an async messaging interface (messenger.ts) on top of the default .postMessage interface of WebWorkers for an easier DX.

To summarize, this bit of code can;

• Create a sandboxed JS execution environment.
• Define async interface on top of WebWorker API.
• Execute arbitrary async JS.
• Install/Uninstall CDN Libraries into the sandbox.
• Provide tern autocomplete generation for CDN libraries.

JS Evaluation

Check worker-internal/eval.ts for the heart of JS evaluation. We opted for indirect eval so that we can prevent local scope access. All JS code executes within the global scope of their sandbox.

CDN Libraries

js-library and worker-internal/handlers/jsLibrary.ts defines necessary logic to install/uninstall libraries into the sandbox. We use importScripts and dynamic import for levaraging CDN libraries but since these are very basic methods, we handle generating library accessors, handling namespace clashes and safely removing libraries.

NodeJS Support

In theory, (almost) all the API we define here is NodeJS worker compatible so we can load the entry into a Node worker and fire it up. However, this is not tested yet. Only importScripts require a polyfill.

Extra:

• Node worker threads