import type { BaseMaterialOptions } from './BaseMaterial';
/**
 * merges two base material options.
 * works with both PBR and Phong Material options
 * @param option1 - base material options
 * @param option2 - base material options
 * @returns - merged base material options
 */
export declare function mergeBaseMaterialOptions(option1?: Partial<BaseMaterialOptions>, option2?: Partial<BaseMaterialOptions>): BaseMaterialOptions;
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