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/** PURE_IMPORTS_START _Observable,_from,_empty PURE_IMPORTS_END */
import { Observable } from '../Observable';
import { from } from './from';
import { empty } from './empty';
export function defer(observableFactory) {
return new Observable(function (subscriber) {
var input;
try {
input = observableFactory();
}
catch (err) {
subscriber.error(err);
return undefined;
}
var source = input ? from(input) : empty();
return source.subscribe(subscriber);
});
}
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