Interceptors aren't chained

[veloware]

Describe the bug
Interceptors aren't chained, in that global interceptors at the provider level, are overridden if an interceptor is introduced at the useFetch() hook level

There does seem to be a work around, at the hook level -

request: async ({ options }) => {
        globalOptions.interceptors?.request?.({ options });
        ...

However, that could easily be forgotten on a case per case basis, and is no different that just housing the 'global' interceptor code in a standard function, and just invoking that, which defeats the purpose of a global 'interceptor'

⚠️ Make a Codesandbox ⚠️
Please do this to easily reproduce the bug.

To Reproduce

• introduce a request interceptor at the provider level, to say, add a request correlation-id header
• introduce a request interceptor at the hook usage level, to say, add another request header
• When running the hook, the provider level request interceptor does not run.

Expected behavior
Both should run, probably the global first, then the more specific interceptor at the hook level second

[krishnasaga]

@veloware I came across the same problem and solved very similar approach as you mentioned.
I think you can create a pull request with this change so it can be reviewed ?

[alon-green]

@veloware how can you access the globalOptions?

[veloware]

@alon-green there is a 2nd arg you can pass to useFetch as a callback, its the first arg of that callback, e.g. -

useFetch(url, (globalOptions) => ({
   ...
    interceptors: {
      request: async ({ options }) => {
        globalOptions.interceptors?.request?.({ options });
        ...

[alon-green]

@veloware thanks for the answer, but I already pass options in the useFetch, in nested hook, I need access to the option of the provider

[veloware]

in the case above though, the globalOptions is not passed to the callback, it's provided by the callback. Those will be the options that were set at the <Provider options={xxx}> level

[alon-green]

But I can't access the provider, can't I take it from the context or something?

[krishnasaga]

@veloware Let me try to create a CodesandBox of this

[krishnasaga]

@alon-green here is the CodeSandbox https://codesandbox.io/s/usefetch-use-http-todo-list-app-managed-state-forked-x1ru0p?file=/src/index.js. If this code sandbox is clarifying solution to your problem or still, it is a problem. now you can modify the code sandbox to help us to understand better. hopefully we can solve it.

@veloware