export declare enum SilkeCommandType {
    ACTION = "/",
    MENTION = "@"
}
export type SilkeCommand = {
    partialMatch?: boolean;
    type: SilkeCommandType;
    value: string;
};
export type SilkeTextValue = {
    type: 'text';
    value: string;
};
export type SilkeImageValue = {
    type: 'image';
    /** Base64-encoded image data */
    data: string;
    /** MIME type (e.g., 'image/png', 'image/jpeg') */
    mimeType: string;
    /** Optional filename */
    name?: string;
};
export type SilkeFileValue = {
    type: 'file';
    /** Base64-encoded file data */
    data: string;
    /** MIME type (e.g., 'text/csv', 'application/vnd.ms-excel') */
    mimeType: string;
    /** Filename */
    name: string;
};
export type SilkeCommandTextFieldValue = SilkeCommand | SilkeTextValue | SilkeImageValue | SilkeFileValue;
/** Key direction mappings for navigation and editing */
export declare const KEY_DIRECTION: Record<string, number>;
/** Get the caret offset within a contentEditable element */
export declare function getCaretOffset(element: HTMLDivElement | null): number;
/** Check if there is a text selection with length > 0 */
export declare function hasSelectionLength(): boolean;
/** Set the caret to a specific character offset within a contentEditable element */
export declare function setCaretOffset(element: HTMLDivElement | null, offset: number): void;
/** Escape HTML special characters to prevent XSS */
export declare function escapeHtml(text: string): string;
/** Get the index of the command at a given caret position */
export declare function getActiveCommandIndex(caretPos: number, value: SilkeCommandTextFieldValue[]): number;
/** Calculate total text length up to a given index */
export declare function getTextLength(value: SilkeCommandTextFieldValue[], index?: number): number;
/** Get the rendered length of a single command/text value */
export declare function getItemLength(item: SilkeCommandTextFieldValue): number;
/** Convert command values to HTML for rendering (excludes images) */
export declare function valueToHtml(value: SilkeCommandTextFieldValue[], styles: Record<string, string>): string;
/** Convert command values to plain string (excludes images) */
export declare function convertSilkeCommandsToString(value: SilkeCommandTextFieldValue[]): string;
/** Check if a command value is a non-text, non-image command */
export declare function isSilkeCommand(value: SilkeCommandTextFieldValue | undefined): value is SilkeCommand;
/** Check if a command value is a text segment */
export declare function isText(value: SilkeCommandTextFieldValue | undefined): value is SilkeTextValue;
/** Check if a command value is an image */
export declare function isImage(value: SilkeCommandTextFieldValue | undefined): value is SilkeImageValue;
/** Check if a command value is a non-image file attachment */
export declare function isFile(value: SilkeCommandTextFieldValue | undefined): value is SilkeFileValue;
/** Check if a command value is any attachment (image or file) */
export declare function isAttachment(value: SilkeCommandTextFieldValue | undefined): value is SilkeImageValue | SilkeFileValue;
/**
 * Calculate a match score for a command against a search query.
 * Higher scores indicate better matches.
 * Returns -1 if there's no match.
 */
export declare function getCommandMatchScore(command: SilkeCommand, query: string): number;
/**
 * Filter and sort commands based on partial matching against a query.
 * Returns commands sorted by match quality (best matches first).
 * If query is empty, returns all commands of the given type sorted alphabetically.
 */
export declare function filterAndSortCommands(commands: SilkeCommand[], query: string, type: SilkeCommandType): SilkeCommand[];