fix(desktop): prevent update downgrades

packages/desktop/src/main/updater/config.test.ts

@@ -0,0 +1,18 @@
+import { expect, test } from "bun:test"
+import { configureStableUpdates } from "./config"
+
+test("stable updates do not install older releases", () => {
+  const client = {
+    channel: null,
+    allowPrerelease: null,
+    allowDowngrade: true,
+  }
+
+  configureStableUpdates(client)
+
+  expect(client).toEqual({
+    channel: "latest",
+    allowPrerelease: false,
+    allowDowngrade: false,
+  })
+})

packages/desktop/src/main/updater/config.ts

@@ -0,0 +1,11 @@
+type UpdateClient = {
+  channel: string | null
+  allowPrerelease: boolean | null
+  allowDowngrade: boolean
+}
+
+export function configureStableUpdates(client: UpdateClient) {
+  client.channel = "latest"
+  client.allowPrerelease = false
+  client.allowDowngrade = false
+}

packages/desktop/src/main/updater/platform.ts

@@ -2,6 +2,7 @@ import { app, autoUpdater } from "electron"
 import pkg from "electron-updater"
 import { Effect } from "effect"
 import { setAppQuitting } from "../windows"
+import { configureStableUpdates } from "./config"
 import type { Platform } from "./index"
 
 const updateClient = pkg.autoUpdater
@@ -15,9 +16,7 @@ export const make = Effect.gen(function* () {
     error: (...args) => runFork(Effect.logError(...args)),
     debug: (...args) => runFork(Effect.logDebug(...args)),
   }
-  updateClient.channel = "latest"
-  updateClient.allowPrerelease = false
-  updateClient.allowDowngrade = true
+  configureStableUpdates(updateClient)
   updateClient.autoDownload = false
   updateClient.autoInstallOnAppQuit = process.platform === "darwin"
   yield* Effect.logInfo("auto updater configured", {