text: /**
  * Copyright 2012-2018, Plotly, Inc.
  * All rights reserved.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
  
  'use strict';
  
  function truncateFloat32(arrayIn, len) {
      var arrayOut = new Float32Array(len);
      for(var i = 0; i < len; i++) arrayOut[i] = arrayIn[i];
      return arrayOut;
  }
  
  function truncateFloat64(arrayIn, len) {
      var arrayOut = new Float64Array(len);
      for(var i = 0; i < len; i++) arrayOut[i] = arrayIn[i];
      return arrayOut;
  }
  
  /**
   * Truncate a typed array to some length.
   * For some reason, ES2015 Float32Array.prototype.slice takes
   * 2x as long, therefore we aren't checking for its existence
   */
  module.exports = function truncate(arrayIn, len) {
      if(arrayIn instanceof Float32Array) return truncateFloat32(arrayIn, len);
      if(arrayIn instanceof Float64Array) return truncateFloat64(arrayIn, len);
      throw new Error('This array type is not yet supported by `truncate`.');
  };
  