TRPCExpressRouteLive

src/Layers/trpc/TRPCExpressRoute.ts

@@ -1,15 +1,21 @@
-import { createExpressMiddleware } from "@trpc/server/adapters/express"
 import { Config, Effect, Layer } from "effect"
+import { ImportError } from "../../ImportError"
 import { ExpressApp } from "../express"
 import { TRPCUnknownContextCreator } from "./TRPCContextCreator"
 import { TRPCAnyRouter } from "./TRPCRouter"
 
 
+const importTRPCServerExpressAdapter = Effect.tryPromise({
+    try: () => import("@trpc/server/adapters/express"),
+    catch: cause => new ImportError({ path: "@trpc/server/adapters/express", cause }),
+})
+
 export const TRPCExpressRouteLive = (
     config: {
         readonly path: Config.Config<string>
     }
 ) => Layer.effectDiscard(Effect.gen(function*() {
+    const { createExpressMiddleware } = yield* importTRPCServerExpressAdapter
     const app = yield* ExpressApp.ExpressApp
 
     app.use(yield* config.path,