import { Coords3D } from './coordinates';
/**
 * Convert a linear sequence of note types into a piano-style layout
 * @param ys Desired vertical coordinates for the notes/keys
 * @param shifts Adjustments to the first three rows. A shift difference of 1 puts a row behind the next row. Defaults to `[0, 0, 0]` so that the all rows are ahead of the rows below.
 * @returns `indexByCode`: a `Map` instance from keycodes to note indices. `coordsByIndex`: location of each note on layer 1 (the one with QWERTY/ASDF keys).
 */
export declare function pianoMap(ys: number[], shifts?: number[]): {
    coordsByIndex: (Coords3D | undefined)[];
    indexByCode: Map<string, number>;
};