@ngrx/effects
Version:
Side effect model for @ngrx/store
30 lines • 5.79 kB
JavaScript
import { merge } from 'rxjs';
import { ignoreElements, map, materialize } from 'rxjs/operators';
import { getSourceMetadata } from './effects_metadata';
import { getSourceForInstance } from './utils';
export function mergeEffects(sourceInstance, globalErrorHandler, effectsErrorHandler) {
const source = getSourceForInstance(sourceInstance);
const isClassBasedEffect = !!source && source.constructor.name !== 'Object';
const sourceName = isClassBasedEffect ? source.constructor.name : null;
const observables$ = getSourceMetadata(sourceInstance).map(({ propertyName, dispatch, useEffectsErrorHandler, }) => {
const observable$ = typeof sourceInstance[propertyName] === 'function'
? sourceInstance[propertyName]()
: sourceInstance[propertyName];
const effectAction$ = useEffectsErrorHandler
? effectsErrorHandler(observable$, globalErrorHandler)
: observable$;
if (dispatch === false) {
return effectAction$.pipe(ignoreElements());
}
const materialized$ = effectAction$.pipe(materialize());
return materialized$.pipe(map((notification) => ({
effect: sourceInstance[propertyName],
notification,
propertyName,
sourceName,
sourceInstance,
})));
});
return merge(...observables$);
}
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