how can i learn how i work with esformatter config like (indent, lineBreak, whiteSpace)

[derakhshanfar]

Hi guys,
First of all thanks a ton for making this amazing library, but I don't know how can I work with this config's, for example when I see some like bellow I can't understand what is it exactly!
What is (before, after, ObjectExpression, ModuleSpecifier, ExportDefault and other bellow configs) ?
What is -1, 0 2 and ..?
Can you help me?

 "lineBreak": {
    "before": {
      "ObjectExpressionOpeningBrace": -1,
      "ObjectExpressionClosingBrace": -1,
      "Property": -1,
      "ExportAllDeclaration": 2,
      "ExportDefaultDeclaration": 2,
      "ExportNamedDeclaration": 2,
      "ModuleSpecifierClosingBrace": 1,
      "ModuleSpecifierComma": 0
    },
    "after": {
      "ModuleSpecifierComma": -1,
      "ObjectExpressionOpeningBrace": -1,
      "ObjectExpressionClosingBrace": -1,
      "Property": -1,
      "ExportAllDeclaration": 2,
      "ExportDefaultDeclaration": 2,
      "ExportNamedDeclaration": 2,
      "ImportDeclaration": 2,
      "ModuleSpecifierOpeningBrace": 1,
      "ModuleSpecifierClosingBrace": -1,
      "ModuleSpecifierComma": 1
    }
  },
  "whiteSpace": {
    "before": {
      "ObjectExpressionClosingBrace": 1
    },
    "after": {
      "MethodName": 1,
      "ObjectExpressionOpeningBrace": 1,
      "PropertyValue": -1
    }
  }