import type { Filter, RegexFilter, PrefixesFilter, Position, AllStreamSubscription } from "../types";
interface FilterOptionsBase {
    /**
     * Sets how often the checkpointReached callback is called.
     * Must be greater than 0.
     */
    checkpointInterval?: number;
    /**
     * A callback invoked and await when a checkpoint is reached.
     * Set the checkpointInterval to define how often this method is called.
     */
    checkpointReached?: (subscription: AllStreamSubscription, position: Position) => Promise<void> | void;
    /**
     * The maximum number of events that are filtered out before the page is returned
     * Must be greater than 0, if supplied.
     */
    maxSearchWindow?: number;
}
interface RegexOptions extends FilterOptionsBase {
    /**
     * A regex to filter by.
     */
    regex: string;
}
interface PrefixesOptions extends FilterOptionsBase {
    /**
     * A list of prefixes to filter on.
     */
    prefixes: string[];
}
interface PrefixesOptions extends Omit<PrefixesFilter, "filterOn" | "checkpointInterval"> {
    checkpointInterval?: Filter["checkpointInterval"];
}
export type FilterOptions = RegexOptions | PrefixesOptions;
export declare const streamNameFilter: {
    (options: RegexOptions): RegexFilter;
    (options: PrefixesOptions): PrefixesFilter;
};
export declare const eventTypeFilter: {
    (options: RegexOptions): RegexFilter;
    (options: PrefixesOptions): PrefixesFilter;
};
export declare const excludeSystemEvents: (options?: Omit<RegexOptions, "regex">) => RegexFilter;
export {};