feat: export getAdapter function (#5324)

index.d.cts

@@ -523,6 +523,7 @@ declare namespace axios {
     isAxiosError<T = any, D = any>(payload: any): payload is AxiosError<T, D>;
     toFormData(sourceObj: object, targetFormData?: GenericFormData, options?: FormSerializerOptions): GenericFormData;
     formToJSON(form: GenericFormData|GenericHTMLFormElement): object;
+    getAdapter(adapters: AxiosAdapterConfig | AxiosAdapterConfig[] | undefined): AxiosAdapter;
     AxiosHeaders: typeof AxiosHeaders;
   }
 }

index.d.ts

@@ -512,6 +512,8 @@ export interface GenericHTMLFormElement {
   submit(): void;
 }
 
+export function getAdapter(adapters: AxiosAdapterConfig | AxiosAdapterConfig[] | undefined): AxiosAdapter;
+
 export function toFormData(sourceObj: object, targetFormData?: GenericFormData, options?: FormSerializerOptions): GenericFormData;
 
 export function formToJSON(form: GenericFormData|GenericHTMLFormElement): object;
@@ -538,6 +540,7 @@ export interface AxiosStatic extends AxiosInstance {
   isAxiosError: typeof isAxiosError;
   toFormData: typeof toFormData;
   formToJSON: typeof formToJSON;
+  getAdapter: typeof getAdapter;
   CanceledError: typeof CanceledError;
   AxiosHeaders: typeof AxiosHeaders;
 }

index.js

@@ -18,6 +18,7 @@ const {
   AxiosHeaders,
   HttpStatusCode,
   formToJSON,
+  getAdapter,
   mergeConfig
 } = axios;
 
@@ -37,5 +38,6 @@ export {
   AxiosHeaders,
   HttpStatusCode,
   formToJSON,
+  getAdapter,
   mergeConfig
 }

lib/axios.js

@@ -15,6 +15,7 @@ import AxiosError from './core/AxiosError.js';
 import spread from './helpers/spread.js';
 import isAxiosError from './helpers/isAxiosError.js';
 import AxiosHeaders from "./core/AxiosHeaders.js";
+import adapters from './adapters/adapters.js';
 import HttpStatusCode from './helpers/HttpStatusCode.js';
 
 /**
@@ -78,6 +79,8 @@ axios.AxiosHeaders = AxiosHeaders;
 
 axios.formToJSON = thing => formDataToJSON(utils.isHTMLForm(thing) ? new FormData(thing) : thing);
 
+axios.getAdapter = adapters.getAdapter;
+
 axios.HttpStatusCode = HttpStatusCode;
 
 axios.default = axios;

test/module/typings/esm/index.ts

@@ -16,6 +16,7 @@ import axios, {
   ParamsSerializerOptions,
   toFormData,
   formToJSON,
+  getAdapter,
   all,
   isCancel,
   isAxiosError,
@@ -570,6 +571,33 @@ axios.get('/user', {
   adapter: ['xhr', 'http']
 });
 
+
+{
+  // getAdapter
+  
+  getAdapter(axios.create().defaults.adapter);
+  getAdapter(undefined);
+  getAdapter([]);
+  getAdapter(['xhr']);
+  getAdapter([adapter]);
+  getAdapter(['xhr', 'http']);
+  getAdapter([adapter, 'xhr']);
+  getAdapter([adapter, adapter]);
+  getAdapter('xhr');
+  getAdapter(adapter);
+  const _: AxiosAdapter = getAdapter('xhr');
+  const __: AxiosAdapter = getAdapter(['xhr']);
+
+  // @ts-expect-error
+  getAdapter();
+  // @ts-expect-error
+  getAdapter(123);
+  // @ts-expect-error
+  getAdapter([123]);
+  // @ts-expect-error
+  getAdapter('xhr', 'http');
+}
+
 // AxiosHeaders
 
 // iterator

test/specs/api.spec.js

@@ -54,6 +54,10 @@ describe('static api', function () {
   it('should have mergeConfig properties', function () {
     expect(typeof axios.mergeConfig).toEqual('function');
   });
+
+  it('should have getAdapter properties', function () {
+    expect(typeof axios.getAdapter).toEqual('function');
+  });
 });
 
 describe('instance api', function () {

test/specs/instance.spec.js

@@ -24,6 +24,7 @@ describe('instance', function () {
         'getUri',
         'isAxiosError',
         'mergeConfig',
+        'getAdapter',
         'VERSION',
         'default',
         'toFormData',