/**
 * Text normalization utilities for the edit tool.
 *
 * Handles line endings, BOM, whitespace, and Unicode normalization.
 */
export type LineEnding = "\r\n" | "\n";
/** Detect the predominant line ending in content */
export declare function detectLineEnding(content: string): LineEnding;
/** Normalize all line endings to LF */
export declare function normalizeToLF(text: string): string;
/** Restore line endings to the specified type */
export declare function restoreLineEndings(text: string, ending: LineEnding): string;
export interface BomResult {
    /** The BOM character if present, empty string otherwise */
    bom: string;
    /** The text without the BOM */
    text: string;
}
/** Strip UTF-8 BOM if present */
export declare function stripBom(content: string): BomResult;
/** Count leading whitespace characters in a line */
export declare function countLeadingWhitespace(line: string): number;
/** Get the leading whitespace string from a line */
export declare function getLeadingWhitespace(line: string): string;
/** Compute minimum indentation of non-empty lines */
export declare function minIndent(text: string): number;
/** Detect the indentation character used in text (space or tab) */
export declare function detectIndentChar(text: string): string;
export declare function convertLeadingTabsToSpaces(text: string, spacesPerTab: number): string;
export declare function normalizeUnicode(s: string): string;
/**
 * Normalize a line for fuzzy comparison.
 * Trims, collapses whitespace, and normalizes punctuation.
 */
export declare function normalizeForFuzzy(line: string): string;
/**
 * Adjust newText indentation to match the indentation delta between
 * what was provided (oldText) and what was actually matched (actualText).
 *
 * If oldText has 0 indent but actualText has 12 spaces, we add 12 spaces
 * to each line in newText.
 */
export declare function adjustIndentation(oldText: string, actualText: string, newText: string): string;