Schema Extractor

Extract the schema of a json file.

This script expects a json file, an array or an object.

• When the json file is an object, the output will be the schema of this object.
• When the json file is an array, the output will be the schema among the array objects.

For example, if you run node . package.json, the output will be something like:

{
  "name": {
    "<string>": {}
  },
  "version": {
    "<string>": {}
  },
  "type": {
    "<string>": {}
  },
  "main": {
    "<string>": {}
  },
  "scripts": {
    "<object>": {}
  },
  "keywords": {
    "<array>": {
      "<empty>": {}
    }
  },
  "author": {
    "<string>": {}
  },
  "license": {
    "<string>": {}
  },
  "description": {
    "<string>": {}
  }
}

Json examples from json.org