not_a_type
Details about the 'not_a_type' diagnostic produced by the Dart analyzer.
'{0}' isn't a type.
{0} isn't a type.
Description
#The analyzer produces this diagnostic when a name is used as a type but declared to be something other than a type.
Example
#The following code produces this diagnostic because f is a function:
dart
f() {}
g(f v) {}
Common fixes
#Replace the name with the name of a type.
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除非另有说明，文档之所提及适用于 Dart 3.11.0 版本报告页面问题.