Rename _middleware to _requestMiddleware

Author: rekmarks

src/JsonRpcEngine.ts

@@ -95,13 +95,13 @@ export type JsonRpcNotificationMiddleware<T> = (
  * Give it a stack of middleware, pass it requests, and get back responses.
  */
 export class JsonRpcEngine extends SafeEventEmitter {
-  private _middleware: JsonRpcMiddleware<unknown, unknown>[];
+  private _requestMiddleware: JsonRpcMiddleware<unknown, unknown>[];
 
   private _notificationMiddleware: JsonRpcNotificationMiddleware<unknown>[];
 
   constructor() {
     super();
-    this._middleware = [];
+    this._requestMiddleware = [];
     this._notificationMiddleware = [];
   }
 
@@ -111,7 +111,7 @@ export class JsonRpcEngine extends SafeEventEmitter {
    * @param middleware - The middleware function to add.
    */
   pushRequestMiddleware<T, U>(middleware: JsonRpcMiddleware<T, U>): void {
-    this._middleware.push(middleware as JsonRpcMiddleware<unknown, unknown>);
+    this._requestMiddleware.push(middleware as JsonRpcMiddleware<unknown, unknown>);
   }
 
   /**
@@ -133,7 +133,7 @@ export class JsonRpcEngine extends SafeEventEmitter {
   pushNotificationMiddleware<T>(
     middleware: JsonRpcNotificationMiddleware<T>,
   ): void {
-    this._middleware.push(middleware as JsonRpcNotificationMiddleware<unknown>);
+    this._requestMiddleware.push(middleware as JsonRpcNotificationMiddleware<unknown>);
   }
 
   /**
@@ -225,7 +225,7 @@ export class JsonRpcEngine extends SafeEventEmitter {
     return async (req, res, next, end) => {
       try {
         const [middlewareError, isComplete, returnHandlers] =
-          await JsonRpcEngine._runAllMiddleware(req, res, this._middleware);
+          await JsonRpcEngine._runAllMiddleware(req, res, this._requestMiddleware);
 
         if (isComplete) {
           await JsonRpcEngine._runReturnHandlers(returnHandlers);
@@ -379,7 +379,7 @@ export class JsonRpcEngine extends SafeEventEmitter {
     };
 
     try {
-      await JsonRpcEngine._processRequest(req, res, this._middleware);
+      await JsonRpcEngine._processRequest(req, res, this._requestMiddleware);
     } catch (_error) {
       // A request handler error, a re-thrown middleware error, or something
       // unexpected.