function _textSummary(numShapes, background, width, height) {
            var text = 'Your output is a, '
              .concat(width, ' by ')
              .concat(height, ' pixels, ')
              .concat(background, ' canvas containing the following');
            if (numShapes === 1) {
              text = ''.concat(text, ' shape:');
            } else {
              text = ''.concat(text, ' ').concat(numShapes, ' shapes:');
            }
            return text;
          }
//the functions in this file support updating the text output
@module Environment
@submodule Environment
@for p5
@requires core