export declare const normalizeLine: (line: string) => string;
export declare function splitFileLines(originalContent: string): string[];
/**
 * Strip leading/trailing replacement lines that exactly duplicate file lines
 * immediately outside the anchored range.
 */
export declare function analyzeReplacementContext(fileLines: readonly string[], startLine: number, endLine: number, replacementLines: readonly string[]): {
    leadingLength: number;
    replacementLines: string[];
    trailingLength: number;
};
export declare function trimReplacementToContext(fileLines: readonly string[], startLine: number, endLine: number, replacementLines: readonly string[]): readonly string[];