generalize

Install:

npm install -g generalize-cli

Example

Suppose you want a schema for the NPM downloads API range results:

$ curl -s https://api.npmjs.org/downloads/range/last-week/npm
{
  "downloads": [
    {
      "day": "2015-05-21",
      "downloads": 136536
    },
    {
      "day": "2015-05-22",
      "downloads": 140254
    },
    {
      "day": "2015-05-23",
      "downloads": 95945
    },
    {
      "day": "2015-05-24",
      "downloads": 88592
    },
    {
      "day": "2015-05-25",
      "downloads": 115167
    },
    {
      "day": "2015-05-26",
      "downloads": 127149
    },
    {
      "day": "2015-05-27",
      "downloads": 131255
    }
  ],
  "start": "2015-05-21",
  "end": "2015-05-27",
  "package": "npm"
}

Run generalize on it!

$ curl -s https://api.npmjs.org/downloads/range/last-week/npm | generalize | jq .
[
  {
    "type": "object",
    "properties": {
      "downloads": [
        {
          "type": "array",
          "items": [
            {
              "type": "object",
              "properties": {
                "day": [
                  {
                    "type": "string"
                  }
                ],
                "downloads": [
                  {
                    "type": "number"
                  }
                ]
              }
            }
          ]
        }
      ],
      "start": [
        {
          "type": "string"
        }
      ],
      "end": [
        {
          "type": "string"
        }
      ],
      "package": [
        {
          "type": "string"
        }
      ]
    }
  }
]

In the current output, instead of proper JSON schema anyOf types, generalize uses arrays. If an array of schemas is 1-long, the array can be collapsed to just the single entry.

TODO

• Proper JSON output
• Optionality recognition

License

Copyright 2015 Christopher Brown. MIT Licensed.