export default class CredentialIssuancePurpose {
    constructor({ controller, date, maxTimestampDelta }?: {
        controller?: object | undefined;
        date?: string | number | Date | undefined;
        maxTimestampDelta?: number | undefined;
    });
    validate(proof: object, { document, suite, verificationMethod, documentLoader, expansionMap }: {
        document: object;
        suite: object;
        verificationMethod: string;
        documentLoader?: object | undefined;
        expansionMap?: object | undefined;
    }): Promise<{
        valid: boolean;
        error: Error;
    }>;
}