/**
 * Text normalization utilities for DocShell
 *
 * Normalization rules:
 * - UTF-8 output, \n newlines only
 * - Remove control characters except \n\t
 * - Collapse >2 consecutive blank lines into 2 (unless raw mode)
 * - Ensure output ends with trailing newline
 */
/**
 * Normalize text according to DocText v1 spec
 */
export declare function normalizeText(text: string, raw?: boolean): string;
/**
 * Apply cat-style line numbering
 */
export declare function numberLines(text: string, nonBlankOnly?: boolean): string;
/**
 * Apply cat -s style blank squeezing
 */
export declare function squeezeBlank(text: string): string;
/**
 * Apply cat -E style (show line ends as $)
 */
export declare function showEnds(text: string): string;
/**
 * Apply cat -T style (show tabs as ^I)
 */
export declare function showTabs(text: string): string;
/**
 * Apply cat -v style (show non-printing characters)
 */
export declare function showNonPrinting(text: string): string;
export interface CatOptions {
    number?: boolean;
    numberNonblank?: boolean;
    squeezeBlank?: boolean;
    showEnds?: boolean;
    showTabs?: boolean;
    showNonprinting?: boolean;
}
/**
 * Apply all cat transformations in the correct order
 */
export declare function applyCatTransforms(text: string, options: CatOptions): string;