Type alias Fetcher<K, V, FC>

Fetcher<K, V, FC>: ((key, staleValue, options) => Promise<V | undefined | void> | V | undefined | void)

Type Parameters

K
V
FC = unknown

Type declaration

- (key, staleValue, options): Promise<V | undefined | void> | V | undefined | void
- The type signature for the OptionsBase.fetchMethod option.
  Parameters
  - key: K
  - staleValue: V | undefined
  - options: FetcherOptions<K, V, FC>
  Returns Promise<V | undefined | void> | V | undefined | void

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