undefined_setter
The setter '{0}' isn't defined for the '{1}' function type.
The setter '{0}' isn't defined for the type '{1}'.
Description
#The analyzer produces this diagnostic when it encounters an identifier that appears to be the name of a setter but either isn't defined or isn't visible in the scope in which the identifier is being referenced.
Example
#The following code produces this diagnostic because there isn't a setter named z
:
class C {
int x = 0;
void m(int y) {
this.z = y;
}
}
Common fixes
#If the identifier isn't defined, then either define it or replace it with the name of a setter that is defined. The example above can be corrected by fixing the spelling of the setter:
class C {
int x = 0;
void m(int y) {
this.x = y;
}
}
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.