import { Shader } from "../assets/shader";
export declare class MaterialDefines {
    protected _keys: string[];
    protected _externalProperties?: {
        [name: string]: {
            type: string;
            default: any;
        };
    };
    /**
     * Creates a new instance
     * @param externalProperties list of external properties to inject into the object
     */
    constructor(externalProperties?: {
        [name: string]: {
            type: string;
            default: any;
        };
    });
    /**
     * Rebuilds the material defines
     */
    rebuild(): void;
    /**
     * Resets the material define values
     */
    reset(): void;
    pushToShader(shader: Shader): void;
    private _setDefaultValue;
}