three.js/examples/jsm/renderers/webgl/utils/WebGLConstants.js

export const GLFeatureName = {

	'WEBGL_compressed_texture_astc': 'texture-compression-astc',
	'WEBGL_compressed_texture_etc': 'texture-compression-etc2',
	'WEBGL_compressed_texture_etc1': 'texture-compression-etc1',
	'WEBGL_compressed_texture_pvrtc': 'texture-compression-pvrtc',
	'WEBKIT_WEBGL_compressed_texture_pvrtc': 'texture-compression-pvrtc',
	'WEBGL_compressed_texture_s3tc': 'texture-compression-bc',
	'EXT_texture_compression_bptc': 'texture-compression-bptc',

};