import { Exception } from '@dolittle/rudiments';
import { KeySelector } from './KeySelector';
/**
 * Exception that is thrown when trying to register a projection with an unkown key selector type.
 */
export declare class UnknownKeySelectorType extends Exception {
    /**
     * Initialises a new instance of the {@link UnknownKeySelectorType} class.
     * @param {KeySelector} selectorType - The key selector type that is not implemented.
     */
    constructor(selectorType: KeySelector);
}
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