external_with_initializer
External fields can't have initializers.
External variables can't have initializers.
Description
#The analyzer produces this diagnostic when a field or variable marked with the keyword external
has an initializer, or when an external field is initialized in a constructor.
Examples
#The following code produces this diagnostic because the external field x
is assigned a value in an initializer:
class C {
external int x;
C() : x = 0;
}
The following code produces this diagnostic because the external field x
has an initializer:
class C {
external final int x = 0;
}
The following code produces this diagnostic because the external top level variable x
has an initializer:
external final int x = 0;
Common fixes
#Remove the initializer:
class C {
external final int x;
}
Unless stated otherwise, the documentation on this site reflects Dart 3.7.3. Page last updated on 2025-05-08. View source or report an issue.