deku-memoize

Decorator to allow components to have a shouldUpdate method. For use with [deku] v2 or [decca].


Usage

dekuMemoize(component) takes in a deku Component, and returns another Component (a [decorator]). It will use the component's shouldUpdate funtion to check if there are updates to be done.

``js
import dekuMemoize from 'deku-memoize'

function render ({ props }) {
return { props.label }
}

// next and prev are the parameters passed onto render().
function shouldUpdate (next, prev) {
return next.props.label !== prev.props.label
}

module.exports = dekuMemoize({ render, shouldUpdate })
`

shouldUpdate

shouldUpdate takes 2 arguments; both are the first parameters passed onto render(). If it returns true, then a render will be triggered; otherwise, render() will not be called.

shouldUpdate` will not be called on the first render.

If shouldUpdate is not given, it will always re-render no matter what (default deku behavior).

[deku]: http://dekujs.github.io/deku/
[decca]: http://ricostacruz.com/decca
[decorator]: https://en.wikipedia.org/wiki/Decorator_pattern

Thanks

deku-memoize © 2015+, Rico Sta. Cruz. Released under the [MIT] License.

Authored and maintained by Rico Sta. Cruz with help from contributors ([list][contributors]).

> ricostacruz.com  · 
> GitHub @rstacruz  · 
> Twitter @rstacruz

[MIT]: http://mit-license.org/
[contributors]: http://github.com/rstacruz/deku-memoize/contributors