/** @packageDocumentation Audio properties for ProTracker MOD files. */
import { AudioProperties } from "../audioProperties.js";
import type { ReadStyle } from "../toolkit/types.js";
/**
 * Audio properties for ProTracker MOD files.
 */
export declare class ModProperties extends AudioProperties {
    /** Number of audio channels. */
    private _channels;
    /** Number of instruments in the module. */
    private _instrumentCount;
    /** Length of the song in patterns (order list entries). */
    private _lengthInPatterns;
    /**
     * Construct audio properties with the given read style.
     * @param readStyle - Detail level for audio property parsing.
     */
    constructor(readStyle: ReadStyle);
    /** Always 0; MOD files do not provide a time-based duration. */
    get lengthInMilliseconds(): number;
    /** Number of audio channels. */
    get channels(): number;
    /** @param value - Number of audio channels. */
    set channels(value: number);
    /** Number of instruments in the module. */
    get instrumentCount(): number;
    /** @param value - Number of instruments. */
    set instrumentCount(value: number);
    get lengthInPatterns(): number;
    set lengthInPatterns(value: number);
}
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