const WebMidi: {
  enable(callback: (err: Error|null)=>void): void
  inputs: MidiIn[]
  outputs: any[]
};
type MidiIn = {
  name: string
  addListener(type: 'noteon', channel: string, listener: (e: {
    note: {number: number}
    velocity: number
  })=>void): void
  addListener(type: 'noteoff', channel: string, listener: (e: {
    note: {number: number}
    velocity: number
  })=>void): void
  addListener(type: 'controlchange', channel: string, listener: (e: {
    controller: {number: number}
    value: number
  })=>void): void
};

const Tonal: any;

function select(selector: string): any;

function color(color: string): Color;
type Color = {
  levels: number[],
};

const createCanvas: Function;
const colorMode: Function;
const smooth: Function;
const frameRate: Function;
const {HSB, BOLD, LEFT, TOP}: any;
const background: Function;
const fill: Function;
const stroke: Function;
const strokeWeight: Function;
const rect: Function;
const textFont: Function;
const textStyle: Function;
const textSize: Function;
const textAlign: Function;
const text: Function;
const saveCanvas: Function;
const {mouseX, mouseY}: number;

function map(...argv: any[]): number;