/** @private */
export declare const REACTION_START_DISPLAY_SIZE = 44;
/** @private */
export declare const REACTION_NUMBER_OF_ANIMATION_FRAMES = 51;
/** @private */
export declare const REACTION_SCREEN_SHARE_ANIMATION_TIME_MS = 4133;
/** @private */
export declare const REACTION_DEFAULT_RESOURCE_FRAME_SIZE_PX = 128;
/** @private */
export declare const getCombinedKey: (userId: string, reactionType: string, receivedAt: Date) => string;
/** @private */
export declare const getReceivedUnixTime: (receivedTime: Date) => number;
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