data.schema.json

{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "id": "https://developer.mozilla.org/browser-compat-data-schema/1.0",

  "definitions": {
    "featureSetLevel5": {
      "type": "object",
      "additionalProperties": {
        "oneOf": [
          { "$ref": "#/definitions/featureSetLevel4" },
          { "$ref": "#/definitions/featureSetLevel3" },
          { "$ref": "#/definitions/featureSetLevel2" },
          { "$ref": "#/definitions/featureSetLevel1" },
          { "$ref": "#/definitions/featureSet" },
          { "$ref": "#/definitions/feature" }
        ]
      }
    },

    "featureSetLevel4": {
      "type": "object",
      "additionalProperties": {
        "oneOf": [
          { "$ref": "#/definitions/featureSetLevel3" },
          { "$ref": "#/definitions/featureSetLevel2" },
          { "$ref": "#/definitions/featureSetLevel1" },
          { "$ref": "#/definitions/featureSet" },
          { "$ref": "#/definitions/feature" }
        ]
      }
    },

    "featureSetLevel3": {
      "type": "object",
      "additionalProperties": {
        "oneOf": [
          { "$ref": "#/definitions/featureSetLevel2" },
          { "$ref": "#/definitions/featureSetLevel1" },
          { "$ref": "#/definitions/featureSet" },
          { "$ref": "#/definitions/feature" }
        ]
      }
    },

    "featureSetLevel2": {
      "type": "object",
        "oneOf": [
          { "$ref": "#/definitions/featureSetLevel1" },
          { "$ref": "#/definitions/featureSet" },
          { "$ref": "#/definitions/feature" }
        ]
    },
  
    "featureSetLevel1": {
      "type": "object",
        "oneOf": [
          { "$ref": "#/definitions/featureSet" },
          { "$ref": "#/definitions/feature" }
        ]
    },

    "featureSet": {
      "type": "object",
      "additionalProperties": { "$ref": "#/definitions/feature" }
    },

    "feature": {
      "type": "object",
      "required": [ "platforms", "status" ],
      "properties" : {
        "name"     : { "$ref": "#/definitions/l10nStrings" },
        "platforms": { "$ref": "#/definitions/platforms"   },
        "status"   : { "$ref": "#/definitions/status"      }
      }
    },

    "platforms": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "Android"            : { "$ref": "#/definitions/browser" },
        "Chrome"             : { "$ref": "#/definitions/browser" },
        "Chrome for Android" : { "$ref": "#/definitions/browser" },
        "Edge"               : { "$ref": "#/definitions/browser" },
        "Edge Mobile"        : { "$ref": "#/definitions/browser" },
        "Firefox"            : { "$ref": "#/definitions/browser" },
        "Firefox for Android": { "$ref": "#/definitions/browser" },
        "Internet Explorer"  : { "$ref": "#/definitions/browser" },
        "IE Mobile"          : { "$ref": "#/definitions/browser" },
        "Node.js"            : { "$ref": "#/definitions/browser" },
        "Opera"              : { "$ref": "#/definitions/browser" },
        "Opera Mobile"       : { "$ref": "#/definitions/browser" },
        "Safari"             : { "$ref": "#/definitions/browser" },
        "Safari Mobile"      : { "$ref": "#/definitions/browser" },
        "Servo"              : { "$ref": "#/definitions/browser" }
      }
    },

    "browser": {
      "type": "object",
      "properties": {
        "support": {
          "oneOf": [
            { "type": "null" },
            { "type": "boolean" },
            { "type": "string", "pattern": "^\\d+(\\.\\d+){0,}$" }
          ]
        },
        "notes": { "$ref": "#/definitions/l10nStrings"}
      },
      "required": ["support"],
      "additionalProperties": false
    },

    "status": {
      "type": "object",
      "required": [ "experimental", "standardized", "stable", "obsolete" ],
      "properties": {
         "experimental": { "type": "boolean" },
         "standardized": { "type": "boolean" },
         "stable"      : { "type": "boolean" },
         "obsolete"    : { "type": "boolean" }
       }
    },

    "l10nStrings": {
      "oneOf": [
        {
          "type" : "array",
          "items": { "type": "string" }
        }, {
          "type": "object",
          "patternProperties": {
            "^[a-z]{2,3}(-[a-z]{2,3})?$": { "type": "array", "items": { "type": "string" } }
          }
        }
      ]
    }
  },

  "type": "object",
  "additionalProperties": {
    "anyOf": [
      { "$ref": "#/definitions/feature" },
      { "$ref": "#/definitions/featureSet" },
      { "$ref": "#/definitions/featureSetLevel1"  },
      { "$ref": "#/definitions/featureSetLevel2"  },
      { "$ref": "#/definitions/featureSetLevel3"  },
      { "$ref": "#/definitions/featureSetLevel4"  },
      { "$ref": "#/definitions/featureSetLevel5"  }
    ]
  }
}