old_contents: 
  module.exports = {
    variants: {
      items: {
        // keepNames: true,
        resize: {
          mini : "300x200",
          preview: "800x600"
        },
        crop: {
          thumb: "200x200"
        },
        resizeAndCrop: {
          large: {resize: "1000x1000", crop: "900x900"}
        }
      },
  
      gallery: {
        crop: {
          thumb: "100x100"
        }
      }
    },
  
    storage: {
      Local: {
        path: '/tmp',
        mode: 0777
      },
      Rackspace: {
        username: "USERNAME",
        apiKey: "API_KEY",
        // authUrl: "https://lon.auth.api.rackspacecloud.com",
        container: "CONTAINER"
      },
      S3: {
        key: 'KEY',
        secret: 'SECRET',
        bucket: 'BUCKET'
        // set `secure: false` if you want to use buckets with characters like .
      }
    },
  
    debug: true
  }
  
new_contents: 
  module.exports = {
    variants: {
      items: {
        // keepNames: true,
        resize: {
          mini : '300x200',
          preview: '800x600'
        },
        crop: {
          thumb: '200x200'
        },
        resizeAndCrop: {
          large: {
            resize: '1000x1000',
            crop: '900x900'
          }
        }
      },
  
      gallery: {
        crop: {
          thumb: '100x100'
        }
      }
    },
  
    storage: {
      Local: {
        path: '/tmp',
        mode: 0777
      },
      Rackspace: {
        username: 'USERNAME',
        apiKey: 'API_KEY',
        // authUrl: "https://lon.auth.api.rackspacecloud.com",
        container: 'CONTAINER'
      },
      S3: {
        key: 'KEY',
        secret: 'SECRET',
        bucket: 'BUCKET'
        // set `secure: false` if you want to use buckets with characters like .
      }
    },
  
    debug: true
  }
  
subject: use single quotes