/**
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* Utils to help to work with Promise objects.
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*/
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export declare class PromiseUtils {
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/**
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* Creates a new promise with resolved value used for lazy relations.
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*/
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static create(value: any): Promise<any>;
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/**
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* If given value is a promise created by "create" method this method gets its value.
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* If given value is not a promise then given value is returned back.
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*/
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static extractValue(object: any): any;
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/**
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* Runs given callback that returns promise for each item in the given collection in order.
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* Operations executed after each other, right after previous promise being resolved.
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*/
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static runInSequence<T, U>(collection: T[], callback: (item: T) => Promise<U>): Promise<U[]>;
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/**
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* Returns a promise that is fulfilled with an array of promise state snapshots,
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* but only after all the original promises have settled, i.e. become either fulfilled or rejected.
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*/
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static settle(promises: Promise<any>[]): Promise<any>;
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}
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