import type { Payload, PayloadRequest, TypedUser } from 'payload';
import type { EmailSenderOption, VerificationFlowConfig } from '../types';
export type SendInvitationEmailResult = {
    status: 'sent';
} | {
    status: 'already_accepted';
} | {
    status: 'user_not_found';
} | {
    status: 'flow_not_found';
} | {
    status: 'no_invitation_flow';
};
interface SendInvitationEmailConfig {
    emailSender: EmailSenderOption | undefined;
    generateInvitationEmailHTML: (args: {
        req: PayloadRequest;
        invitationURL: string;
        user: TypedUser;
    }) => string | Promise<string>;
    generateInvitationEmailSubject: (args: {
        req: PayloadRequest;
        invitationURL: string;
        user: TypedUser;
    }) => string | Promise<string>;
    resolveInvitationURL: (args: {
        payload: Payload;
        req: PayloadRequest | undefined;
        token: string;
        user: TypedUser;
    }) => Promise<string>;
    verificationFlows: Record<string, VerificationFlowConfig> | undefined;
}
export declare function createSendInvitationEmail(config: SendInvitationEmailConfig): (options: {
    payload: Payload;
    userId: string | number;
    req?: PayloadRequest;
}) => Promise<SendInvitationEmailResult>;
export declare function sendInvitationEmail(options: {
    payload: Payload;
    userId: string | number;
    req?: PayloadRequest;
}): Promise<SendInvitationEmailResult>;
export {};
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