1. Dart
2. dart:core
3. AssertionError
4. AssertionError constructor

##### AssertionError class

1. Constructors
2. AssertionError
3. Properties
4. hashCode
5. message
6. runtimeType
7. stackTrace
8. Methods
9. noSuchMethod
10. toString
11. Operators
12. operator ==

description

# AssertionError constructor Null safety

AssertionError(

1. [Object? message]

)

## Implementation

    AssertionError([this.message]);