# AssertionError class

Error thrown by the runtime system when an assert statement fails.

Inheritance
  - Object
  - Error
  - AssertionError
Implemented by
  - TypeError

## Constructors

AssertionError([Object message ])

## Properties

message → Object
  Message describing the assertion error.
  final
hashCode → int
  The hash code for this object. [...]
  read-only, inherited
runtimeType → Type
  A representation of the runtime type of the object.
  read-only, inherited
stackTrace → StackTrace
  read-only, inherited

## Methods

toString() → String
  Returns a string representation of this object.
noSuchMethod(Invocation invocation) → dynamic
  Invoked when a non-existent method or property is accessed. [...]
  inherited

## Operators

operator ==(dynamic other) → bool
  The equality operator. [...]
  inherited