{
  "$schema": "http://json-schema.org/draft-07/schema",
  "title": "JSON schema for sandbox.config.json",
  "type": "object",
  "properties": {
    "parser": {
      "description": "a special syntax parser",
      "oneOf": [
        {"type": "string", "enum": ["supercss"]},
        {"type": "boolean", "enum": [false]}
      ]
    },
    "syntax": {
      "description": "an object providing a syntax parser and a stringifier",
      "type": "string",
      "enum": [
        "sugarss",
        "postcss-syntax",
        "postcss-html",
        "postcss-markdown",
        "postcss-jsx",
        "postcss-styled",
        "postcss-scss",
        "postcss-sass",
        "postcss-less",
        "postcss-less-engine",
        "postcss-js",
        "postcss-safe-parser",
        "midas"
      ]
    },
    "stringifier": {
      "description": "a special syntax output generator",
      "type": "string"
    },
    "map": {
      "description": "source map options",
      "type": "string",
      "enum": ["inline", "prev", "sourcesContent", "annotation", "from"]
    },
    "from": {
      "description": "the input file name (most runners set it automatically)",
      "type": "string"
    },
    "to": {
      "description": "the input file name (most runners set it automatically)",
      "type": "string",
      "pattern": "^(.+)/([^/]+)$"
    },
    "plugins": {
      "description": "the plugin will be loaded with defaults",
      "type": "object",
      "additionalProperties": {
        "oneOf": [
          {"type": "null"},
          {"type": "boolean", "enum": [false]},
          {
            "type": "object",
            "properties": {
              "options": {
                "type": "object"
              }
            }
          }
        ]
      }
    }
  }
}