From 2254e73cf76f1bc95d4850211e3fa34acae50136 Mon Sep 17 00:00:00 2001
From: zjx0905 <954270063@qq.com>
Date: Fri, 7 Apr 2023 15:18:05 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=20axios.fork()=20?=
 =?UTF-8?q?=E6=97=A0=E6=B3=95=E8=AE=BF=E9=97=AE=E7=A7=81=E6=9C=89=E6=96=B9?=
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---
 src/axios.ts           |  9 ++++++++-
 test/axios.api.test.ts | 15 +++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/axios.ts b/src/axios.ts
index 7c48b9c..3fabcb9 100644
--- a/src/axios.ts
+++ b/src/axios.ts
@@ -89,7 +89,14 @@ function createInstance(defaults: AxiosRequestConfig): AxiosInstance {
   }
 
   Object.assign(axios, instance);
-  Object.setPrototypeOf(axios, Object.getPrototypeOf(instance));
+  Object.setPrototypeOf(
+    axios,
+    Object.assign(Object.getPrototypeOf(instance), {
+      // axios.fork 内部调用了 instance 的私有方法，无法直接访问私有方法
+      // axios.fork 调用时 this 重新指向 instance
+      fork: instance.fork.bind(instance),
+    }),
+  );
 
   return axios as AxiosInstance;
 }
diff --git a/test/axios.api.test.ts b/test/axios.api.test.ts
index 53357c3..fba7fb6 100644
--- a/test/axios.api.test.ts
+++ b/test/axios.api.test.ts
@@ -118,4 +118,19 @@ describe('src/axios.ts', () => {
       });
     });
   });
+
+  test('应该可以获取 URI', () => {
+    expect(
+      axios.getUri({
+        url: 'test',
+      }),
+    ).toBe('test');
+  });
+
+  test('应该可以派生领域', () => {
+    const a = axios.fork({
+      baseURL: 'test',
+    });
+    expect(a.defaults.baseURL).toBe('http://api.com/test');
+  });
 });