install.json

{
  "resources": {
    "head": [
      {
        "type": "style",
        "src": "./node_modules/cssgram/source/css/cssgram.css"
      },
      {
        "type": "script",
        "src": "./source/app.js"
      }
    ]
  },
  "preview": {
    "handlers": [
      {
        "options": ["*"],
        "execute": "INSTALL_SCOPE.setOptions(INSTALL_OPTIONS)"
      }
    ]
  },
  "options": {
    "properties": {
      "regions": {
        "title": "Sets of images to filter",
        "order": 1,
        "type": "array",
        "items": {
          "notitle": true,
          "type": "object",
          "properties": {
            "location": {
              "order": 1,
              "title": "Location",
              "description": "Select the part of your page which contains the images you’d like to filter.",
              "type": "string",
              "format": "selector"
            },
            "pages": {
              "order": 2,
              "title": "Pages",
              "description": "Which pages should use this filter?",
              "type": "object",
              "format": "page"
            },
            "filter": {
              "order": 3,
              "title": "Filter",
              "type": "string",
              "enum": [
                "aden",
                "brannan",
                "brooklyn",
                "clarendon",
                "earlybird",
                "gingham",
                "hudson",
                "inkwell",
                "kelvin",
                "lark",
                "lofi",
                "maven",
                "mayfair",
                "moon",
                "nashville",
                "perpetua",
                "reyes",
                "rise",
                "slumber",
                "stinson",
                "toaster",
                "valencia",
                "walden",
                "willow",
                "xpro2",
                "_1977"
              ],
              "enumNames": {
                "aden": "Aden",
                "brannan": "Brannan",
                "brooklyn": "Brooklyn",
                "clarendon": "Clarendon",
                "earlybird": "Earlybird",
                "gingham": "Gingham",
                "hudson": "Hudson",
                "inkwell": "Inkwell",
                "kelvin": "Kelvin",
                "lark": "Lark",
                "lofi": "Lo-fi",
                "maven": "Maven",
                "mayfair": "Mayfair",
                "moon": "Moon",
                "nashville": "Nashville",
                "perpetua": "Perpetua",
                "reyes": "Reyes",
                "rise": "Rise",
                "slumber": "Slumber",
                "stinson": "Stinson",
                "toaster": "Toaster",
                "valencia": "Valencia",
                "walden": "Walden",
                "willow": "Willow",
                "xpro2": "X-Pro II",
                "_1977": "1977"
              },
              "default": "aden"
            }
          }
        },
        "default": [
          {
            "location": "body",
            "filter": "walden"
          }
        ]
      }
    }
  }
}