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request intercepters order is reversed

Freshabout 21 hours ago
Mar 14, 20260 views
Confidence Score70%
70%

Problem

[code block] which prints: [code block]

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1 Fix

Canonical Fix
Unverified Fix
New Fix – Awaiting Verification

Correct Order of Axios Interceptors

Medium Risk

In Axios, interceptors are executed in the order they are added. If the order of request interceptors is reversed, it can lead to unexpected behavior, such as incorrect headers or altered request data. This typically happens when interceptors are added in an incorrect sequence or when the logic within the interceptors is not properly structured to handle the intended flow.

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  1. 1

    Identify Interceptor Definitions

    Locate the section of your code where the Axios interceptors are defined. Ensure that you have a clear understanding of what each interceptor is intended to do.

  2. 2

    Reorder Interceptors

    Rearrange the interceptor definitions so that they are added in the correct order. For example, if you have an authentication interceptor and a logging interceptor, ensure that the authentication interceptor is added first.

    javascript
    axios.interceptors.request.use(authInterceptor);
axios.interceptors.request.use(loggingInterceptor);
  3. 3

    Test Interceptor Functionality

    After reordering, run your application and make API requests to ensure that the interceptors are functioning as expected. Check that the correct headers are being set and that the request payload is as intended.

  4. 4

    Add Unit Tests for Interceptors

    Implement unit tests for each interceptor to ensure they behave correctly when called in the intended order. This will help prevent future issues related to interceptor order.

    javascript
    test('authInterceptor sets authorization header', () => {
  const config = {};
  const result = authInterceptor(config);
  expect(result.headers['Authorization']).toBeDefined();
});

Validation

Confirm that the API requests are processed correctly by checking the network logs in your browser's developer tools. Ensure that the headers and data sent match the expected values. Additionally, run the unit tests to verify that all interceptors are functioning as intended.

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Environment

Submitted by

AC

Alex Chen

2450 rep

Tags

axioshttpapi