import type { SceneAnimationCancellationReason } from "@skenora/contracts";
export interface AnimationPropertyOwner {
    readonly keys: readonly string[];
    /** Continuous controllers block replacement in either direction. */
    readonly kind: "animation" | "exclusive";
    /** Clips reserve one slot per participant; independent writers use one. */
    readonly slots?: number;
    cancel(reason: SceneAnimationCancellationReason): void;
}
export declare const CAMERA_ANIMATION_PROPERTY_KEY: string;
export declare class AnimationPropertyConflict extends Error {
    readonly code: "conflict" | "budget";
    constructor(code: "conflict" | "budget");
}
/** One session's writer arbitration and notification boundary; no scene values. */
export declare class AnimationPropertyOwners {
    #private;
    readonly maxRunning: number;
    constructor(maxRunning?: number);
    transaction<T>(commit: () => T): T;
    notify(callback: () => void): void;
    preflight(owner: AnimationPropertyOwner): void;
    acquire(owner: AnimationPropertyOwner): void;
    /** Call only after preparing every field/instance without writes. */
    write(keys: readonly string[], commit: () => void, reason?: SceneAnimationCancellationReason): void;
    release(owner: AnimationPropertyOwner): void;
    has(keys: readonly string[]): boolean;
    /** Lifecycle invalidation may also revoke exclusive continuous controllers. */
    cancel(keys: readonly string[], reason: SceneAnimationCancellationReason): void;
    cancelAll(reason: SceneAnimationCancellationReason): void;
}
/** Tuple encoding avoids collisions with authored IDs containing separators. */
export declare function animationPropertyKey(kind: "entity" | "material", id: string, property: string): string;
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