Interface ModifierState

Snapshot of modifier-key state at gesture dispatch.

Lives in core rather than beside the gesture types that produce it because core/selection/chromeState.ts reads it, and core may not import from interactions/. Re-exported from interactions/gestures/types.ts, which is still where gesture code names it.

interface ModifierState {
    alt: boolean;
    ctrl: boolean;
    meta: boolean;
    shift: boolean;
}