feat: add per route busboy configuration

index.js

@@ -72,7 +72,7 @@ function fastifyMultipart (fastify, options, done) {
         return
       }
 
-      for await (const part of req.parts()) {
+      for await (const part of req.parts(req.routeOptions.config.multipart_options)) {
         req.body = part.fields
 
         if (part.file) {

types/index.d.ts

@@ -35,6 +35,10 @@ declare module 'fastify' {
   interface FastifyInstance {
     multipartErrors: MultipartErrors;
   }
+
+  interface FastifyContextConfig {
+    multipart_options?: Omit<BusboyConfig, 'headers'>
+  }
 }
 
 type FastifyMultipartPlugin = FastifyPluginCallback<