export type SlackModalView = Record<string, unknown>;
export declare function normalizeSlackModalViewInput(view: unknown): SlackModalView;
export interface SlackModalThreadContext {
    threadTs: string;
    channel: string;
}
export interface DecodedSlackModalPrivateMetadata {
    raw: string | null;
    value: unknown;
    threadContext: SlackModalThreadContext | null;
}
export declare function encodeSlackModalPrivateMetadata(privateMetadata: string | undefined, threadContext: SlackModalThreadContext | null): string | undefined;
export declare function decodeSlackModalPrivateMetadata(privateMetadata: string | undefined): DecodedSlackModalPrivateMetadata;