dyomedea/src/workers/dispatcher-worker.ts

import { initDb } from '../db';

const self = globalThis as unknown as SharedWorkerGlobalScope;

const actions = { initDb };

self.onconnect = function (e) {
  var port = e.ports[0];

  port.onmessage = async function (e) {
    console.log(`Worker received ${JSON.stringify(e.data)}`);
    const { id, payload } = e.data;
    console.log(`payload.action in actions: ${payload.action in actions}`);
    var returnValue: any = 'unknownAction';
    if (payload.action in actions) {
      returnValue = await actions[<keyof typeof actions>payload.action](
        payload.params
      );
    }
    port.postMessage({ id: id, payload: returnValue });
  };
};

export default self;