parse ToString output to JSON for formatting

ToString2JSON.pegjs

QuotedObject 
  = Object
  / "'" v:Object "'" { return v }
  / '"' v:Object '"' { return v }

Object = UnnamedObject / NamedObject

UnnamedObject = "{" fieldValues:FieldValues "}" { return fieldValues.reduce((r,v)=>({...r, ...v})) } 

NamedObject = name:Name value:UnnamedObject { return {[name]: value } } 

Name = [a-zA-Z_0-9-]+ { return text() }

FieldValues = values:(', '? FieldValue)*  { return values.map(it=>it[1]) }

FieldValue 
  = field:Name '=' value:Value { return {[field]:value} }

Value = Array / QuotedObject / String /  Boolean / Null / Unquoted
Array = "[" values:([,]?[ ]* Value)* "]" { return values.map(it=>it[2]) }
String = "'" chars:[^']* "'" { return chars.join('') }
Boolean = "true" / "false" { return Boolean(text()) }
Null = "null" { return null }
Unquoted = [A-Za-z0-9-:/\\._?=&]+ { return text() }