cesiumDemo/Source/Scene/TerrainState.js

import freezeObject from '../Core/freezeObject.js';

    /**
     * @private
     */
    var TerrainState = {
        FAILED : 0,
        UNLOADED : 1,
        RECEIVING : 2,
        RECEIVED : 3,
        TRANSFORMING : 4,
        TRANSFORMED : 5,
        READY : 6
    };
export default freezeObject(TerrainState);