import { type TrackPresetSelection } from "./track-preset.ts";
export type ViewerMode = "piano-roll" | "arrangement";
export type PersistedTrackState = {
    enabled: boolean;
    solo: boolean;
    gain: number;
    presetOverride?: TrackPresetSelection | null;
};
export type PersistedViewerState = {
    presetDefaultsVersion: number;
    followPlayhead: boolean;
    viewMode: ViewerMode;
    arrangementTrackHeight: number;
    arrangementTrackHeightManual: boolean;
    pianoRollRowHeight: number;
    tracks: Record<string, PersistedTrackState>;
};
export declare const DEFAULT_ARRANGEMENT_TRACK_HEIGHT = 88;
export declare const DEFAULT_PIANO_ROLL_ROW_HEIGHT = 8;
export declare const CURRENT_PRESET_DEFAULTS_VERSION = 2;
export declare function normalizeViewerState(value: unknown): Partial<PersistedViewerState>;
export declare function collectViewerTrackState(tracks: readonly {
    id: string;
    enabled: boolean;
    solo: boolean;
    gain: number;
    presetOverride: TrackPresetSelection | null;
}[]): Record<string, PersistedTrackState>;