/**
 * CSV Line Splitting Utilities
 *
 * Shared helpers for splitting CSV input into lines while preserving
 * the original line ending length (LF/CR/CRLF).
 */
export interface SplitLine {
    /** Line content without the line ending */
    line: string;
    /** Line ending length (0 when last line has no newline) */
    lineEndingLength: number;
    /** Total length of line + line ending */
    lineLengthWithEnding: number;
}
/**
 * Split input into lines using the given linebreak regex and yield per-line
 * metadata including the actual line ending length.
 *
 * Notes:
 * - Works with mixed line endings.
 * - Skips trailing split artifacts (empty string produced by split when the input ends with a newline).
 */
export declare function splitLinesWithEndings(input: string, linebreakRegex: RegExp | string): Generator<SplitLine, void, undefined>;