@localnerve/gulp-responsive/lib/format.js

small patch for gulp-responsive

import path from 'node:path'

export default function format (filePath) {
  const extname = path.extname(filePath)
  switch (extname) {
    case '.jpeg':
      return 'jpeg'
    case '.jpg':
      return 'jpg'
    case '.jpe':
      return 'jpeg'
    case '.png':
      return 'png'
    case '.webp':
      return 'webp'
    default:
      return 'unsupported'
  }
}