usePrevious Hook
Got from https://usehooks.com/usePrevious/ It saves the previous value of props or state
usePromiseCallback Hook
Hook dedicated to offer a sync way of accessing a promise state.
Keeps the last result until new results are loaded, to avoid UI flashes.
Supports a delayMS param to customise the loading threshold, to avoid UI flashes.
Only processes the last promise call.
usePromise Hook
Wrapped usePromiseCallback.
It gets triggered on init and every time the args change by default.
Useful to fetch page data.
\* | The value to save |
**Example**
```js
const [state, setState] = React.useState()
const prev = usePrevious(state)
```
## usePromiseCallback(promise, deps, delayMS)
usePromiseCallback Hook
Hook dedicated to offer a sync way of accessing a promise state.
Keeps the last result until new results are loaded, to avoid UI flashes.
Supports a delayMS param to customise the loading threshold, to avoid UI flashes.
Only processes the last promise call.
**Kind**: global function
| Param | Type | Description |
| --- | --- | --- |
| promise | Promise | The promise that would be wrapped |
| deps | Array.<any> | extra deps used to re-create the callback |
| delayMS | number | The delay in ms to switch the loading state to true |
**Example**
```js
const [callback, result, loading, err] = usePromiseCallback(Promise.resolve, [], 500)
```
## usePromise(promise, deps, delayMS)
usePromise Hook
Wrapped [usePromiseCallback](module:hooks.usePromiseCallback).
It gets triggered on init and every time the args change by default.
Useful to fetch page data.
**Kind**: global function
| Param | Type | Description |
| --- | --- | --- |
| promise | Promise | The promise that would be wrapped |
| deps | Array.<any> | deps to call the function with |
| delayMS | number | The delay in ms to switch the loading state to true |
**Example**
```js
const [callback, result, loading, err] = usePromise(Promise.resolve, ["hello"], 500)
```
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_Source: https://npm.io/package/@washingtonpost/red-react-lib · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._