/**
 * @public
 * @class utils
 */
/**
 * Converts a base64 string into a Uint8Array of binary data.
 *
 * @private
 * @method base64ToUint8
 * @param  {string} base64String The base64 string that you'd like to be converted into a Uint8Array.
 * @return {Uint8Array} A Uint8Array of converted binary audio data.
 */
export declare function base64ToUint8(base64String: string): Uint8Array;
/**
 * Strips extraneous stuff from a soundfont and splits the soundfont into a JSON
 * object. Keys are note names and values are base64 encoded strings.
 *
 * @private
 * @method mungeSoundFont
 * @param {string} soundfont A soundfont as a long base64 string
 * @return {object} A JSON representation of all the notes in the font
 */
export declare function mungeSoundFont(soundfont: string): string[];
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