Possible type patterns:

// basic string
'type' // only one test
'type | type' // returns to test one or more types
'type?' // is type or null/undefined
'type | type?' // the second type would be type or null/undefined
'enum:val1,val2,val3' // enum type - validates if value matches any of the specified values
'enum:val1,val2,val3?' // optional enum - also accepts null/undefined
'string | enum:red,green,blue' // enum combined with other types


// basic array 
'[type]' // returns test to test all the keys
'[type | type]' // returns test to test all key with one or more
'[[type],[type]]'
'[enum:red,green,blue]' // array where all elements must match one of the enum values

// basic object
'{key1: type}' 
'{key1: type | type}' 
'{key1: type, key2: type}' 
'{key1: type, key2?: type}' // if key2 is not present or null/undefined, it will not be tested
'{key1: type, key2: type?}' // if key2 is not set or null/undefined, it will not be tested
'{key1: type | type, key2: type | type}' 
'{any: type}' // any key
'{any: type | type}' // any key
'{key1: type, any: type}' // specific key, and all other "any"
'{key1: type | type, ...}' // specific key, and all other no test
'{status: enum:active,inactive,pending}' // object with enum property
'{role: enum:admin,user,guest, active: boolean}' // multiple properties with enum


// ADVANCE
// array of objects
'[{key1: type}]' // returns test to test all the keys
'[{key1: type | type}]' // returns test to test all key with one or more
'[{key1: type, key2: type}]' // returns
'[{key1: type, key2: type}, {key1: type, key2: type}]'
'[{key1: type | type, key2: type | type}, {key1: type | type, key2: type | type}]'
'[{key1: type, any: type}]'


// Builder Object gets a Map() with the following keys. For nested maps, the same keys are used.
for basic types
Map(){
    testMethod: basic,
    tests: [test1, test2, test3],
}

for array
Map(){
    testMethod: array,
    tests: [test1, test2, test3],
}

for object
Map(){
    testMethod: object,
    tests: Map(test1, test2, test3),
    optionalKeys: [],// keys that are optional and may not tested if not found
    testFew: [], // when 'Any' is in the test, testFew will be used to test the keys here and all other with Any"
    testAllAny: boolean, // it will test all keys with the 'any' test
    testOnly: boolean, // when this is set, only this keys will be tested. It works when the test has '...'
}