fix(context): revert PR #4707 (#4757)

Author: yusukebe

src/context.ts

@@ -667,10 +667,6 @@ export class Context<
     headers?: HeaderRecord
   ): ReturnType<BodyRespond> => this.#newResponse(data, arg, headers) as ReturnType<BodyRespond>
 
-  #useFastPath(): boolean {
-    return !this.#preparedHeaders && !this.#status && !this.finalized
-  }
-
   /**
    * `.text()` can render text as `Content-Type:text/plain`.
    *
@@ -688,8 +684,8 @@ export class Context<
     arg?: ContentfulStatusCode | ResponseOrInit,
     headers?: HeaderRecord
   ): ReturnType<TextRespond> => {
-    return this.#useFastPath() && !arg && !headers
-      ? (createResponseInstance(text) as ReturnType<TextRespond>)
+    return !this.#preparedHeaders && !this.#status && !arg && !headers && !this.finalized
+      ? (new Response(text) as ReturnType<TextRespond>)
       : (this.#newResponse(
           text,
           arg,
@@ -717,15 +713,11 @@ export class Context<
     arg?: U | ResponseOrInit<U>,
     headers?: HeaderRecord
   ): JSONRespondReturn<T, U> => {
-    return (
-      this.#useFastPath() && !arg && !headers
-        ? Response.json(object)
-        : this.#newResponse(
-            JSON.stringify(object),
-            arg,
-            setDefaultContentType('application/json', headers)
-          )
-    ) as JSONRespondReturn<T, U>
+    return this.#newResponse(
+      JSON.stringify(object),
+      arg,
+      setDefaultContentType('application/json', headers)
+    ) /* eslint-disable @typescript-eslint/no-explicit-any */ as any
   }
 
   html: HTMLRespond = (