feat(desktop): surface local server startup failures (#30822)

packages/desktop/src/renderer/initialization.ts

@@ -0,0 +1,22 @@
+export function initializationData<A>(state: (() => A | undefined) & { error: unknown }) {
+  if (state.error !== undefined) throw markLocalServerStartup(state.error)
+  return state()
+}
+
+function markLocalServerStartup(error: unknown) {
+  const failure = error instanceof Error ? error : new Error(String(error))
+  const prefix = "Error invoking remote method 'await-initialization': Error: "
+  if (failure.message.startsWith(prefix)) {
+    const previous = failure.message
+    failure.message = failure.message.slice(prefix.length)
+    if (failure.stack) failure.stack = failure.stack.replace(`Error: ${previous}`, `Error: ${failure.message}`)
+  }
+  Object.defineProperty(failure, "localServerStartup", { value: true })
+  return failure
+}
+
+export function initializationReady<A>(state: (() => A | undefined) & { error: unknown; loading: boolean }) {
+  if (state.loading) return false
+  initializationData(state)
+  return true
+}