fix: type definition for transformRequestOption

Author: xiaoxiangmoe

index.d.ts

@@ -1,2 +1,2 @@
-import { AxiosRequestConfig, AxiosPromise } from 'axios';
-export default function mpAdapter(config: AxiosRequestConfig): AxiosPromise;
+import { AxiosRequestConfig, AxiosPromise } from 'axios';
+export default function mpAdapter(config: AxiosRequestConfig, { transformRequestOption }?: { transformRequestOption?: ((requestOption: any) => any) | undefined }): AxiosPromise;

package.json

@@ -5,6 +5,7 @@
   "main": "dist/index.js",
   "jsnext:main": "dist/index.esm.js",
   "module": "dist/index.esm.js",
+  "types": "index.d.ts",
   "miniprogram": "dist/miniprogram",
   "sideEffects": false,
   "scripts": {
@@ -58,4 +59,4 @@
   "dependencies": {
     "axios": "^0.19.2"
   }
-}
+}