export interface SlackCanvasDocumentContent {
    type: "markdown";
    markdown: string;
}
export type SlackCanvasCreateMethod = "canvases.create" | "conversations.canvases.create";
export type SlackCanvasCreateKind = "standalone" | "channel";
export type SlackCanvasUpdateMode = "append" | "prepend" | "replace";
export type SlackCanvasSectionType = "h1" | "h2" | "h3" | "any_header";
export type SlackCanvasEditOperation = "insert_at_end" | "insert_at_start" | "replace";
export interface SlackCanvasCommentRecord {
    id?: string;
    userId?: string;
    createdTs?: string;
    text: string;
}
export interface SlackCanvasCommentsPage {
    canvasId: string;
    title?: string;
    permalink?: string;
    commentsCount: number;
    returnedCount: number;
    page?: number;
    pages?: number;
    comments: SlackCanvasCommentRecord[];
    nextCursor?: string;
}
export interface SlackCanvasCreateInput {
    kind?: string;
    title?: string;
    markdown?: string;
    channelId?: string;
}
export interface SlackCanvasCreateRequest {
    kind: SlackCanvasCreateKind;
    method: SlackCanvasCreateMethod;
    body: {
        title?: string;
        channel_id?: string;
        document_content?: SlackCanvasDocumentContent;
    };
}
export interface SlackCanvasEditRequest {
    canvas_id: string;
    changes: [
        {
            operation: SlackCanvasEditOperation;
            document_content: SlackCanvasDocumentContent;
            section_id?: string;
        }
    ];
}
export interface SlackCanvasSectionLookupRequest {
    canvas_id: string;
    criteria: {
        contains_text: string;
        section_types?: SlackCanvasSectionType[];
    };
}
export interface SlackCanvasSectionLookupResult {
    id?: string;
}
export declare function normalizeSlackCanvasCreateKind(kind?: string): SlackCanvasCreateKind;
export declare function normalizeSlackCanvasUpdateMode(mode?: string): SlackCanvasUpdateMode;
export declare function normalizeSlackCanvasSectionType(type?: string): SlackCanvasSectionType | undefined;
export declare function normalizeSlackCanvasCommentsLimit(limit?: number): number;
export declare function buildSlackCanvasCreateRequest(input: SlackCanvasCreateInput): SlackCanvasCreateRequest;
export declare function buildSlackCanvasEditRequest(input: {
    canvasId: string;
    markdown: string;
    mode?: string;
    sectionId?: string;
}): SlackCanvasEditRequest;
export declare function buildSlackCanvasSectionsLookupRequest(input: {
    canvasId: string;
    containsText: string;
    sectionType?: string;
}): SlackCanvasSectionLookupRequest;
export declare function pickSlackCanvasSectionId(sections: SlackCanvasSectionLookupResult[] | undefined, sectionIndex?: number): string;
export declare function extractSlackChannelCanvasId(response: Record<string, unknown>): string | null;
export declare function extractSlackCanvasCommentsPage(response: Record<string, unknown>, fallbackCanvasId?: string): SlackCanvasCommentsPage;