code: function buildUmdLib(dest, plugins = []) {
  	return src.transform(rollup, {
  		plugins: plugins,
  		input: 'Ractive.js',
  		output: {
  			name: 'Ractive',
  			format: 'umd',
  			file: dest,
  			sourcemap: true,
  			banner: banner,
  			noConflict: true
  		},
  		cache: false
  	}).transform(transpile, { accept: ['.js'] }).transform(replacePlaceholders);
  }
docs: /* Bundle builders Builds a UMD bundle of Ractive