import { IBaseFieldFilterPart, ICondition } from '@novu/shared';
import { FilterProcessingDetails, IFilterVariables } from './filter-processing-details';
export declare abstract class Filter {
    protected processFilterEquality(variables: IFilterVariables, fieldFilter: IBaseFieldFilterPart, filterProcessingDetails: FilterProcessingDetails): boolean;
    static sumFilters(summary: {
        filters: string[];
        failedFilters: string[];
        passedFilters: string[];
    }, condition: ICondition, type?: string): {
        filters: string[];
        failedFilters: string[];
        passedFilters: string[];
    };
    private parseValue;
    protected findAsync<T>(array: T[], predicate: (t: T) => Promise<boolean>): Promise<T | undefined>;
    protected filterAsync<T>(arr: T[], callback: (item: T) => Promise<boolean>): Promise<T[]>;
}
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