build/lib/tsb/transpiler.ts/TscTranspiler/constructor
class TscTranspiler:	constructor(
		logFn: (topic: string, message: string) => void,
		private readonly _onError: (err: any) => void,
		configFilePath: string,
		private readonly _cmdLine: ts.ParsedCommandLine
	) {
		logFn('Transpile', `will use ${TscTranspiler.P} transpile worker`);
		this._outputFileNames = new OutputFileNameOracle(_cmdLine, configFilePath);
	}