All these function do basically the same thing. Given a parameter, the function checks if it the correct type, and returns true or false.

• aeq.isNullOrUndefined
• aeq.isBoolean
  • aeq.isBool
• aeq.isNumber
  • aeq.isNum
• aeq.isString
  • aeq.isStr
• aeq.isObject
  • aeq.isObj
• aeq.isPlainObject
• aeq.isArray
  • aeq.isArr
• aeq.isFunc
  • aeq.isFunction
• aeq.isAeq
• aeq.isApp
• aeq.isComp
  • aeq.isComposition
• aeq.isAVLayer
• aeq.isLayer
• aeq.isProperty
  • aeq.isProp
• aeq.isPropertyGroup
• aeq.reflect

The indented function names are alias functions of the function above.