Function ExitableMixin

Returns {
    _mixinName: string;
    instructionFields: string[];
    prototype: __type<any>;
    subscribableFields: SubscribableFieldDescriptor[];
    new (...args: any[]): __type;
} & TBase

• • new (...args: any[]): __type

  • Parameters

    • ...args: any[]

    Returns __type

• _mixinName: string

• instructionFields: string[]

  exits is the canonical instruction field shape for declarative content. applyExits consumes a Record<string, ExitInstruction> and installs the runtime entries — no paired getter for the spec (the runtime exits: Map<string, Exit> has its own API). See applyExits and feedback_property_vs_instruction_fields.

• prototype: __type<any>

• subscribableFields: SubscribableFieldDescriptor[]

  Projection field for live subscriptions. Reads getObviousExits() (explicit ∪ zone-derived, !hidden) and shapes each entry as { direction } for the wire. Destination paths are deliberately NOT shipped — the pane renders a "go

  " click target, not a hyperlink to the destination.

  No dependsOnFields plumbing today: rooms with explicit exits settle at hydration and cartesian-derived exits are positional. If runtime exit add/remove ever becomes a hot path (door sealing, dynamic walls), wire addExit / removeExit to fire FieldChangedEvent { field: 'exits' } the same way Container's addContainable / removeContainable do for contents.