constructor( writer ) {

		this.writer = writer;
		this.name = 'KHR_materials_emissive_strength';

	}
Materials Emissive Strength Extension

Specification: https://github.com/KhronosGroup/glTF/blob/5768b3ce0ef32bc39cdf1bef10b948586635ead3/extensions/2.0/Khronos/KHR_materials_emissive_strength/README.md

@private