Filter images from an array of files

filterFileListByExtension.js

// Test file list
let fileList = [
  'myFile.js',
  'myImage.png',
  './subdir/image.jpg',
];

// Filter images from the changed files list
let imageFiles = fileList.filter(fileName => {
  return fileName.match(/\.(jpg|png|gif)$/);
});
// -> ['myImage.png', './subdir/image.jpg',]