Adding a mechanism to postpone DB access before the DB is ready.

src/workers/dispatcher-worker.ts

@@ -17,11 +17,18 @@ import { getState, setState } from '../db/state';
 import { getTrk, putNewTrk } from '../db/trk';
 import { getTrkseg, appendTrkpt } from '../db/trkseg';
 import { getWpt, putWpt } from '../db/wpt';
+import { until } from '../lib/async-wait';
 
 //const self = globalThis as unknown as WorkerGlobalScope;
 
 console.log({ caller: 'dispatcher-worker' });
 
+declare global {
+  var dbReady: boolean;
+}
+
+globalThis.dbReady = false;
+
 onmessage = async function (e) {
   const actions = {
     initDb,
@@ -57,14 +64,37 @@ onmessage = async function (e) {
   const { id, payload } = e.data;
   var returnValue: any = 'unknownAction';
   if (payload.action in actions) {
-    console.log({ caller: 'dispatcher-worker / awaiting', id, payload });
+    console.log({
+      caller: 'dispatcher-worker / awaiting',
+      id,
+      payload,
+      dbReady: globalThis.dbReady,
+    });
+    if (payload.action !== 'initDb' && !globalThis.dbReady) {
+      console.log({
+        caller: 'dispatcher-worker / waiting for dbReady',
+        id,
+        dbReady: globalThis.dbReady,
+      });
+      await until(() => globalThis.dbReady, 10);
+      console.log({
+        caller: 'dispatcher-worker / dbReady',
+        id,
+        dbReady: globalThis.dbReady,
+      });
+    }
     returnValue = await actions[<keyof typeof actions>payload.action]({
       ...payload.params,
       _dispatchId: id,
     });
   }
   postMessage({ id: id, payload: returnValue });
-  console.log({ caller: 'dispatcher-worker / response sent', id, returnValue });
+  console.log({
+    caller: 'dispatcher-worker / response sent',
+    id,
+    returnValue,
+    dbReady: globalThis.dbReady,
+  });
 };
 
 export const returnAgain = (id: number, returnValue: any) => {