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August 10, 2018 21:01
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model$ for recompose + rxjs
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function createModel(propsConfig = {}, sideEffects = []) { | |
const entries = Object.entries(propsConfig); | |
const props$ = combineLatest(...entries.map(entry => entry[1])).pipe( | |
map(values => | |
values.reduce((props, currValue, currIndex) => { | |
const propName = entries[currIndex][0]; | |
return { | |
...props, | |
[propName]: currValue | |
}; | |
}, {}) | |
) | |
); | |
const ignoredSideEffects$ = merge(...sideEffects).pipe(ignoreElements()); | |
return merge(props$, ignoredSideEffects$); | |
} | |
// usage | |
componentFromStream(props$ => { | |
// ... some observables | |
const model$ = createModel({ | |
isSearching: isSearching$, | |
containerClass: props$.pipe( | |
map(props => props.containerClass), | |
distinctUntilChanged() | |
) | |
}, [/* side effect observables here */]); | |
const Component = props => ( | |
<div> | |
<Searchbox | |
containerClass={props.containerClass} | |
/> | |
{props.isSearching ? <div>searching!</div> : null} | |
</div> | |
); | |
return model$.pipe(map(Component)); | |
}); |
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