Modify Request

[kaaax0815]

I am sending a request from inside a interceptor (to refresh auth token). If the Refresh Token is not valid I get a 401, which in turn triggers the interceptor again.
I could exclude the request by the url, but I don't want to do that.
Is there a way to add a property to the Request before it goes through the interceptors?

[dosubot[bot]]

Hi @kaaax0815! I'm Dosu and I’m helping the openapi-ts team.

Yes, you can prevent recursive interceptor triggering by marking your refresh token request with a custom property or header, then checking for that marker in your interceptor.

• If you're using Axios, you can add a custom property (like config._isRefreshRequest = true) or a custom header to the request config inside your interceptor, and then check for it to skip the refresh logic for those requests. This is a common and supported pattern in Axios-based SDKs (docs).

• For Fetch-based clients (including Nuxt, Next.js, and legacy clients), you can't reliably add arbitrary properties to the request object, but you can set a custom header (like x-refresh-request: true) in your refresh request. In your interceptor, check for this header and skip the refresh logic if it's present (docs, docs, docs).

This approach avoids relying on the URL and works across different client types. If you want a code example tailored to your specific client, let me know which one you're using!

To reply, just mention @dosu.

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