import { Note, BreveNote } from './../notation-service/symbol/symbol';
declare type terminalGroup = Note[];
declare type psalmLine = {
    initium: Note[];
    tenor: BreveNote;
    extraNotes: Note[];
    terminalGroups: terminalGroup[];
};
interface CustomError {
    atIndex: number;
    message: string;
}
export declare class MelodyError implements CustomError {
    atIndex: number;
    message: string;
    constructor(atIndex: number, message: string);
}
/**
 * Represents an analysis of a given psalm melody, with validity checks.
 */
export interface PsalmMelody {
    originalString: string;
    isValid: boolean;
    firstLine: psalmLine | undefined;
    secondLine: psalmLine | undefined;
    errors: MelodyError[];
}
export {};