function filterForJS ( files ) {
  return files.filter( function ( file ) {
    return file.match( /\.js$/ );
  });
}
/**
 * A utility function to get all app JavaScript sources.
 */
A utility function to get all app JavaScript sources.
A utility function to get all app JavaScript sources .
function filterForJS ( files ) {
  return files.filter( function ( file ) {
    return file.match( /\.js$/ );
  });
}
function filterForJS ( files ) { return files . filter ( function ( file ) { return file . match ( / \.js$ / ) ; } ) ; }
A utility function to get all app JavaScript sources.
A utility function to get all app JavaScript sources .