runtime_type library

A non-opaque representation of types at runtime.

Normally, Type objects are opaque and cannot be used for actual logic. RuntimeType allows for operations such as sub- or super-type checking, type checks, and casting using a variable instead of a literal.

To use, replace your type literals with calls to the RuntimeType constructor:

// Before
final stringType = String;
// After
final stringType = RuntimeType<String>();

Classes

RuntimeType<T>

A non-opaque representation of a Type that can be used at runtime.

Extensions

RuntimeTypeX on Object?

Provides extensions to allow RuntimeTypes appear more similar to the core Dart language.

Constants

boolType → const RuntimeType<bool>

The bool type represented as a RuntimeType.

doubleType → const RuntimeType<double>

The double type represented as a RuntimeType.

dynamicType → const RuntimeType

The dynamic type, represented as a RuntimeType.

enumType → const RuntimeType<Enum>

The enum type, represented as a RuntimeType.

intType → const RuntimeType<int>

The int type, represented as a RuntimeType.

neverType → const RuntimeType<Never>

The never type, represented as a RuntimeType.

nullType → const RuntimeType<Null>

The Null type, represented as a RuntimeType.

numType → const RuntimeType<num>

The num type, represented as a RuntimeType.

objectType → const RuntimeType<Object>

The object type, represented as a RuntimeType.

stringType → const RuntimeType<String>

The string type, represented as a RuntimeType.