node_modules/rxjs/dist/esm/internal/operators/delayWhen.js

import { concat } from '../observable/concat';
import { take } from './take';
import { ignoreElements } from './ignoreElements';
import { mapTo } from './mapTo';
import { mergeMap } from './mergeMap';
import { innerFrom } from '../observable/innerFrom';
export function delayWhen(delayDurationSelector, subscriptionDelay) {
    if (subscriptionDelay) {
        return (source) => concat(subscriptionDelay.pipe(take(1), ignoreElements()), source.pipe(delayWhen(delayDurationSelector)));
    }
    return mergeMap((value, index) => innerFrom(delayDurationSelector(value, index)).pipe(take(1), mapTo(value)));
}
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