/** Validates international syntax and the fixed-length North American numbering plan. */
export declare function validatePhotonPhoneNumber(value: string): string | null;
export interface PhotonManagedProject {
    projectId: string;
    projectSecret: string;
    assignedPhoneNumber?: string;
    /** Deletes the dedicated project when a later setup phase fails. */
    cleanup(): Promise<void>;
}
export interface PhotonDeviceAuthorization {
    userCode: string;
    verificationUrl: string;
}
export interface ProvisionPhotonProjectOptions {
    projectName: string;
    phoneNumber: string;
    onAuthorization(authorization: PhotonDeviceAuthorization): void;
    signal?: AbortSignal;
    deps?: PhotonManagementDeps;
}
export interface UsePhotonProjectOptions {
    projectId: string;
    projectSecret: string;
    dedicatedLine?: string;
    phoneNumber?: string;
    deps?: PhotonManagementDeps;
}
export interface PhotonManagementDeps {
    fetch: typeof fetch;
    delay(ms: number, signal?: AbortSignal): Promise<void>;
}
/** Returns the least-loaded dedicated iMessage line, when the project has one. */
export declare function findDedicatedPhotonLine(input: {
    projectId: string;
    projectSecret: string;
    deps?: Pick<PhotonManagementDeps, "fetch">;
}): Promise<string | undefined>;
/** Authorizes Photon and creates an isolated iMessage project for one eve agent. */
export declare function provisionPhotonProject(options: ProvisionPhotonProjectOptions): Promise<PhotonManagedProject>;
/** Validates existing Photon credentials and registers the agent's iMessage user. */
export declare function usePhotonProject(options: UsePhotonProjectOptions): Promise<PhotonManagedProject>;