/**
 * @octomil/browser — Device context for silent registration
 *
 * Tracks installation identity, registration state, and auth tokens
 * for the device registration flow. Uses crypto.randomUUID() for
 * installation IDs (NOT browser fingerprinting) and persists to
 * localStorage where available.
 */
export type RegistrationState = "pending" | "registered" | "failed";
export type TokenState = {
    type: "none";
} | {
    type: "valid";
    accessToken: string;
    expiresAt: Date;
} | {
    type: "expired";
};
export declare class DeviceContext {
    readonly installationId: string;
    readonly orgId: string | null;
    readonly appId: string | null;
    private _registrationState;
    private _tokenState;
    private _serverDeviceId;
    constructor(opts: {
        installationId: string;
        orgId?: string | null;
        appId?: string | null;
    });
    get registrationState(): RegistrationState;
    get tokenState(): TokenState;
    get serverDeviceId(): string | null;
    get isRegistered(): boolean;
    authHeaders(): Record<string, string> | null;
    telemetryResource(): Record<string, string>;
    /** @internal */
    _updateRegistered(serverDeviceId: string, accessToken: string, expiresAt: Date): void;
    /** @internal */
    _updateToken(accessToken: string, expiresAt: Date): void;
    /** @internal */
    _markFailed(): void;
    /** @internal */
    _markTokenExpired(): void;
    private static readonly STORAGE_KEY;
    static getOrCreateInstallationId(): string;
}
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