export declare namespace CONSTANTS {
    const PROP_MOUNT: "__PROP_MOUNT";
    const DEFAULT: "__default";
    const DEFAULT_REMOVE: "__default_remove";
    const CUSTOM_DIFF_PREFIX: "__diff_";
    const INFO_KEY: "__renderInfo";
    const STATE_NODE_KEY: "__stateNode";
    const TARGET_KEY: "__target";
    const FIBER_KEY: "__fiber";
    const POOL_DEFAULT_SIZE: 300;
}
export declare const isProduction: boolean;
export declare const isBrowser: boolean;
export declare const isBrowserDev: boolean;