+ constructor(workerScript: string, workerOptions: WorkerOptions) {
+ if (workerScript == null) {
+ throw new TypeError('Worker script is not defined');
+ }
+ if (typeof workerScript !== 'string') {
+ throw new TypeError('Worker script must be a string');
+ }
+ if (workerScript.trim().length === 0) {
+ throw new Error('Worker script is an empty string');
+ }
+ if (!existsSync(workerScript)) {
+ throw new Error('Worker script file does not exist');
+ }