/**
 * True when a sketch line is an elision marker (`// ... existing code ...`,
 * `# ...`, bare `...` at column 0, etc.).
 *
 * Indented bare `...` / `…` WITHOUT an elision phrase is NOT a marker — that is
 * idiomatic Python Ellipsis (stub bodies, Protocol/ABC methods, `.pyi`). Comment-
 * wrapped markers and bare column-0 `...` stay markers so AI-style elision keeps
 * working; only the Python-shaped false positive is carved out.
 * @param {string} line
 * @returns {boolean}
 */
export function isElisionMarker(line: string): boolean;
/**
 * Parse a sketch into content segments split on elision markers.
 * @param {unknown} sketch
 * @returns {{ok: true, segments: string[][], leading: boolean, trailing: boolean, markers: boolean} | {ok: false, reason: string}}
 */
export function parseSketch(sketch: unknown): {
    ok: true;
    segments: string[][];
    leading: boolean;
    trailing: boolean;
    markers: boolean;
} | {
    ok: false;
    reason: string;
};
/**
 * Align a full sketch against the original file content. Original may be the
 * full text (CRLF tolerated) or a pre-split line array. Sketches without any
 * elision marker only apply to files of <= maxUnmarkedLines lines (whole-file
 * replace); anything larger is rejected as too risky to infer.
 * @param {string | string[]} original
 * @param {unknown} sketch
 * @param {{maxUnmarkedLines?: number}} [opts]
 * @returns {{ok: true, ops: WarpOp[], tierMax: number} | {ok: false, reason: string}}
 */
export function alignSketch(original: string | string[], sketch: unknown, opts?: {
    maxUnmarkedLines?: number;
}): {
    ok: true;
    ops: WarpOp[];
    tierMax: number;
} | {
    ok: false;
    reason: string;
};
/**
 * Coalesce aligned ops into ONE byte-exact old_string/new_string replacement
 * spanning first..last changed line, grown symmetrically until old_string is
 * unique in fullText. All-or-nothing on any harness — no MultiEdit needed.
 * @param {string[]} origLines
 * @param {string} fullText joined origLines (caller supplies the snapshot's fullText)
 * @param {WarpOp[]} ops monotonic non-overlapping ops from alignSketch
 * @returns {{ok: true, i0: number, i1: number, oldString: string, newString: string} | {ok: false, reason: string}}
 */
export function lowerOpsToSpan(origLines: string[], fullText: string, ops: WarpOp[]): {
    ok: true;
    i0: number;
    i1: number;
    oldString: string;
    newString: string;
} | {
    ok: false;
    reason: string;
};
export const WARP_EDIT: boolean;
export type WarpOp = {
    /**
     * first replaced original line index (0-based, inclusive)
     */
    i0: number;
    /**
     * last replaced original line index (inclusive; >= i0)
     */
    i1: number;
    /**
     * replacement lines
     */
    newLines: string[];
    /**
     * match tier that placed this op (1 exact, 2 normalized)
     */
    tier: number;
};