provide config for codegen

frontend/search/config.ts

@@ -0,0 +1,11 @@
+import * as default_config from './public/config.json'
+
+export let config = default_config  /** to infer the types **/
+let config_fetched = false
+
+export async function fetch_config () {
+  if(!config_fetched) {
+    await fetch("/config.json").then(async res => {config = await res.json()
+                                                   config_fetched = true})
+  }
+}

frontend/search/public/config.json

@@ -0,0 +1,2 @@
+{"base_url": "http://localhost:3000",
+ "backend_base_url": "http://localhost:4000"}