feat(vite): cache rpc response

Author: webfansplz

packages/vite/src/app/composables/rpc.ts

@@ -14,6 +14,7 @@ export const connectionState = reactive<{
 })
 
 const rpc = shallowRef<BirpcReturn<DevToolsRpcServerFunctions, DevToolsRpcClientFunctions>>(undefined!)
+const responseCacheMap = new Map<string, unknown>()
 
 export async function connect() {
   const runtimeConfig = useRuntimeConfig()
@@ -40,6 +41,15 @@ export async function connect() {
           connectionState.error = e
           console.error(`[vite-devtools] RPC error on executing "${name}":`)
         },
+        onRequest: async (req, next, resolve) => {
+          const cacheKey = `${req.m}-${JSON.stringify(req.a)}`
+          if (responseCacheMap.has(cacheKey)) {
+            resolve(responseCacheMap.get(cacheKey))
+          }
+          else {
+            responseCacheMap.set(cacheKey, await next(req))
+          }
+        },
       },
     })