penpal
Penpal simplifies communication with iframes, workers, and windows by using promise-based methods on top of postMessage.
service-worker-mock
Service Worker Mock ========================= A mock service worker environment generator.
swarpc
Full type-safe RPC library for service worker -- move things off of the UI thread with ease!
@worker-tools/json-stream
Utilities for working with streaming JSON in Worker Runtimes such as Cloudflare Workers, Deno Deploy and Service Workers.
@fairfox/polly
Multi-execution-context framework with reactive state and cross-context messaging for Chrome extensions, PWAs, and worker-based applications