constructor( manager ) {

			super( manager );
			this.transcoderPath = '';
			this.transcoderBinary = null;
			this.transcoderPending = null;
			this.workerLimit = 4;
			this.workerPool = [];
			this.workerNextTaskID = 1;
			this.workerSourceURL = '';
			this.workerConfig = null;

		}
THREE.Loader for Basis Universal GPU Texture Codec.

Basis Universal is a "supercompressed" GPU texture and texture video
compression system that outputs a highly compressed intermediate file format
(.basis) that can be quickly transcoded to a wide variety of GPU texture
compression formats.

This loader parallelizes the transcoding process across a configurable number
of web workers, before transferring the transcoded compressed texture back
to the main thread.