message: removing global definition
  addresses
diff: @@ -15,8 +15,7 @@ const defaults = {
  path : path.resolve(__dirname, "build"),
  filename : "[name].js",
  library: "Tone",
  - libraryTarget : "umd",
  - globalObject : "typeof self !== 'undefined' ? self : this",
  + libraryTarget : "umd"
  },
  resolve : {
  extensions: ['.ts', '.js']
  