text: const gulp = require('gulp');
  const copyfiles = require('copyfiles');
  
  const LIBRARY_SRC = '../dist/**/*';
  const LIBRARY_DIST = 'lib';
  
  gulp.task('copy-lib', (callback) => {
    copyfiles([ LIBRARY_SRC, LIBRARY_DIST ], 2, callback);
  });
  
  gulp.task('copy-lib:watch', () => {
    gulp.watch(LIBRARY_SRC, ['copy-lib']);
  });
  