text: /**
   * @author alteredq / http://alteredqualia.com/
   * @author mr.doob / http://mrdoob.com/
   */
  
  export default  {
      
          canvas: !! window.CanvasRenderingContext2D,
          webgl: ( function () {
      
              try {
      
                  var canvas = document.createElement( 'canvas' ); return !! ( window.WebGLRenderingContext && ( canvas.getContext( 'webgl' ) || canvas.getContext( 'experimental-webgl' ) ) );
      
              } catch ( e ) {
      
                  return false;
      
              }
      
          } )(),
          workers: !! window.Worker,
          fileapi: window.File && window.FileReader && window.FileList && window.Blob,
      
          getWebGLErrorMessage: function () {
      
              var element = document.createElement( 'div' );
              element.id = 'webgl-error-message';
              element.style.fontFamily = 'monospace';
              element.style.fontSize = '13px';
              element.style.fontWeight = 'normal';
              element.style.textAlign = 'center';
              element.style.background = '#fff';
              element.style.color = '#000';
              element.style.padding = '1.5em';
              element.style.width = '400px';
              element.style.margin = '5em auto 0';
      
              if ( ! this.webgl ) {
      
                  element.innerHTML = window.WebGLRenderingContext ? [
                      'Your graphics card does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation" style="color:#000">WebGL</a>.<br />',
                      'Find out how to get it <a href="http://get.webgl.org/" style="color:#000">here</a>.'
                  ].join( '\n' ) : [
                      'Your browser does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation" style="color:#000">WebGL</a>.<br/>',
                      'Find out how to get it <a href="http://get.webgl.org/" style="color:#000">here</a>.'
                  ].join( '\n' );
      
              }
      
              return element;
      
          },
      
          addGetWebGLMessage: function ( parameters ) {
      
              var parent, id, element;
      
              parameters = parameters || {};
      
              parent = parameters.parent !== undefined ? parameters.parent : document.body;
              id = parameters.id !== undefined ? parameters.id : 'oldie';
      
              element = Detector.getWebGLErrorMessage();
              element.id = id;
      
              parent.appendChild( element );
      
          }
      
      };
  