fix: custom fetch for all providers (#6538)

* fix: custom fetch for all providers

* fix: run in development should use built-in fetch

Author: louis-jan

src-tauri/tauri.conf.json

@@ -6,7 +6,7 @@
   "build": {
     "frontendDist": "../web-app/dist",
     "devUrl": "http://localhost:1420",
-    "beforeDevCommand": "cross-env IS_TAURI=true yarn dev:web",
+    "beforeDevCommand": "cross-env IS_TAURI=true IS_DEV=true yarn dev:web",
     "beforeBuildCommand": "cross-env IS_TAURI=true yarn build:web"
   },
   "app": {

web-app/src/lib/completion.ts

@@ -169,11 +169,12 @@ export const sendCompletion = async (
     providerName = 'openai-compatible'
 
   const tokenJS = new TokenJS({
-    apiKey: provider.api_key ?? (await getServiceHub().core().getAppToken()) ?? '',
+    apiKey:
+      provider.api_key ?? (await getServiceHub().core().getAppToken()) ?? '',
     // TODO: Retrieve from extension settings
     baseURL: provider.base_url,
     // Use Tauri's fetch to avoid CORS issues only for openai-compatible provider
-    ...(providerName === 'openai-compatible' && { fetch: getServiceHub().providers().fetch() }),
+    fetch: IS_DEV ? fetch : getServiceHub().providers().fetch(),
     // OpenRouter identification headers for Jan
     // ref: https://openrouter.ai/docs/api-reference/overview#headers
     ...(provider.provider === 'openrouter' && {
@@ -183,10 +184,11 @@ export const sendCompletion = async (
       },
     }),
     // Add Origin header for local providers to avoid CORS issues
-    ...((provider.base_url?.includes('localhost:') || provider.base_url?.includes('127.0.0.1:')) && {
+    ...((provider.base_url?.includes('localhost:') ||
+      provider.base_url?.includes('127.0.0.1:')) && {
       fetch: getServiceHub().providers().fetch(),
       defaultHeaders: {
-        'Origin': 'tauri://localhost',
+        Origin: 'tauri://localhost',
       },
     }),
   } as ExtendedConfigOptions)
@@ -402,7 +404,10 @@ export const postMessageProcessing = async (
           console.log('Parsed tool parameters:', toolParameters)
         } catch (error) {
           console.error('Failed to parse tool arguments:', error)
-          console.error('Raw arguments that failed:', toolCall.function.arguments)
+          console.error(
+            'Raw arguments that failed:',
+            toolCall.function.arguments
+          )
         }
       }
       const approved =
@@ -416,10 +421,12 @@ export const postMessageProcessing = async (
             )
           : true)
 
-      const { promise, cancel } = getServiceHub().mcp().callToolWithCancellation({
-        toolName: toolCall.function.name,
-        arguments: toolCall.function.arguments.length ? toolParameters : {},
-      })
+      const { promise, cancel } = getServiceHub()
+        .mcp()
+        .callToolWithCancellation({
+          toolName: toolCall.function.name,
+          arguments: toolCall.function.arguments.length ? toolParameters : {},
+        })
 
       useAppState.getState().setCancelToolCall(cancel)
 

web-app/src/types/global.d.ts

@@ -22,6 +22,7 @@ declare global {
   declare const MODEL_CATALOG_URL: string
   declare const AUTO_UPDATER_DISABLED: boolean
   declare const GA_MEASUREMENT_ID: string
+  declare const IS_DEV: boolean
   interface Window {
     core: AppCore | undefined
     gtag?: (...args: unknown[]) => void

web-app/vite.config.ts

@@ -40,6 +40,7 @@ export default defineConfig(({ mode }) => {
     },
     define: {
       IS_TAURI: JSON.stringify(process.env.IS_TAURI),
+      IS_DEV: JSON.stringify(process.env.IS_DEV),
       IS_WEB_APP: JSON.stringify(false),
       IS_MACOS: JSON.stringify(
         process.env.TAURI_ENV_PLATFORM?.includes('darwin') ?? false