creation_with_non_type
The name '{0}' isn't a class.
Description
#The analyzer produces this diagnostic when an instance creation using either new
or const
specifies a name that isn't defined as a class.
Example
#The following code produces this diagnostic because f
is a function rather than a class:
int f() => 0;
void g() {
new f();
}
Common fixes
#If a class should be created, then replace the invalid name with the name of a valid class:
int f() => 0;
void g() {
new Object();
}
If the name is the name of a function and you want that function to be invoked, then remove the new
or const
keyword:
int f() => 0;
void g() {
f();
}
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.