Port<TValue, TInputData extends Object?, THandler extends Function> class abstract

Base class for composable ports (pipes, behaviors, slots).

Ports are stateless across containers. Handler registration, deregistration, and invocation all go through per-container maps owned by AppContainer (via container.handlersOf<THandler>(port), container.addPortHandler(...), etc.). The only mutable field on a port itself is _owner, which is set once (either up front via the feature: constructor argument or lazily on the first apply) and never cleared — the ownership of a port is a property of the feature that declared it in ports:, stable for the lifetime of the process.

Handler invariants:

• Handlers must be pure — no side effects beyond computing the returned value. A handler that throws will break the current apply and propagate the exception to the caller (the container's reaction doesn't swallow it).
• Handlers can read from reactive State / Atom; reads are tracked automatically for invalidation. They must NOT write to reactive state during a handler body — that creates a reaction cycle where the write invalidates the very reaction executing the handler. Schedule writes outside of the handler (e.g. in an onStart Future or user-triggered task).

Implemented types

• LoggerDebugInfo

Implementers

• Behavior
• Pipe

Properties

debugInfo → Map<String, String>

Key-value pairs describing this object for debug output.

no setter, override

hashCode → int

The hash code for this object.

no setter, inherited

name → String

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

type → PortType

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited