import * as str from './str';
export declare const enum LINE_PATCH_OP_TYPE {
    /**
     * The whole line is deleted. Delete the current src line and advance the src
     * counter.
     */
    DEL = -1,
    /**
     * Lines are equal in src and dst. Keep the line in src and advance, both, src
     * and dst counters.
     */
    EQL = 0,
    /**
     * The whole line is inserted. Insert the current dst line and advance the dst
     * counter.
     */
    INS = 1,
    /**
     * The line is modified. Execute inner diff between the current src and dst
     * lines. Keep the line in src and advance the src and dst counters.
     */
    MIX = 2
}
export type LinePatchOp = [
    type: LINE_PATCH_OP_TYPE,
    /**
     * Assignment of this operation to the line in the `src` array.
     */
    src: number,
    /**
     * Assignment of this operation to the line in the `dst` array.
     */
    dst: number,
    /**
     * Character-level patch.
     */
    patch: str.Patch
];
export type LinePatch = LinePatchOp[];
/**
 * Aggregate character-by-character patch into a line-by-line patch.
 *
 * @param patch Character-level patch
 * @returns Line-level patch
 */
export declare const agg: (patch: str.Patch) => str.Patch[];
export declare const diff: (src: string[], dst: string[]) => LinePatch;