isLoading field

[vladnkolesnikov]

Hi,
there is a field isLoading in the original library that allows to implement cases like initial state. Is there any plans to implement it soon?
Also I was curious if isValidating field should be true by default whenever key is missing?

[adamdehaven]

Could useSwrvState handle what you're needing?
https://docs-swrv.netlify.app/features.html#useswrvstate

[vladnkolesnikov]

Unfortunately not. I could if isValidating was false in case no key was provided, meaning the first request was skipped.

I have a case when I need to display several states:

• Initial state: request is not being called: data & error is undefined
• loading state: data & error is undefined, waiting for response;
• success & error state;
• validating: has data, but new request is being called.

[vladnkolesnikov]

Also I was wondered why isValidating state is true by default? In original library initial value depends on few conditions like key presence, initial params and so on

SWR implementation:
https://github.com/vercel/swr/blob/1d8110900d1aee3747199bfb377b149b7ff6848e/core/src/use-swr.ts#L302

Vue port implementation:

swrv/src/use-swrv.ts

Line 230 in 649fc77

isValidating: true,

[adamdehaven]

I have a case when I need to display several states:

• Initial state: request is not being called: data & error is undefined
• loading state: data & error is undefined, waiting for response;
• success & error state;
• validating: has data, but new request is being called.

• The initial state would have to be known from your host app - if you're using dependent fetching or something to trigger the first fetch, the host app would obviously be in control of that state, so you should already know whether you have triggered the first fetch.