Debugging with ts-node and VS code

There seems to be an issue with running threads.js with `node -r ts-node/register`.
Description of how the issue appears:
Launching application through VS Code debugger that has threads.js method call that spawns a new worker.
After the first call to such method, everything works fine - worker returns. Subsequent calls throws
```
Error: Timeout: Did not receive an init message from worker after 10000ms. Make sure the worker calls expose().
at Timeout._onTimeout (E:\something\node_modules\threads\dist\master\spawn.js:34:53)
at listOnTimeout (internal/timers.js:531:17)
at processTimers (internal/timers.js:475:7)
```

Details:
tsconfig.json
```
{
"compilerOptions": {
"skipLibCheck": true,
"lib": [
"dom",
"es5",
"es6",
"es7",
"es2015",
"es2016",
"es2017",
"es2018",
"esnext"
],
"module": "commonjs",
"moduleResolution": "node",
"pretty": true,
"sourceMap": false,
"target": "es6",
"outDir": "./dist",
"baseUrl": "./",
"declaration": true,
},
"forceConsistentCasingInFileNames": false,
"noImplicitReturns": true,
"noImplicitAny": true,
"strict": true,
"strictNullChecks": true,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"resolveJsonModule": true,
"noUnusedLocals": false,
"esModuleInterop": true,
"typeRoots": [
"./node_modules/@types",
"./src/@types"
]
},
"include": [
"./src/*.ts",
"./src/**/*.ts",
"./src/**/*.d.ts"
],
"exclude": [
"node_modules"
],
"typeAcquisition": {
"enable": true
}
}
```
vs code debuggers launch.json
```
{
"version": "0.2.0",
"configurations": [
{
"name": "API",
"type": "node",
"request": "launch",
"args": [
"${workspaceFolder}/src/Server.ts"
],
"runtimeArgs": [
"-r",
"ts-node/register"
],
"cwd": "${workspaceRoot}",
"protocol": "inspector",
"internalConsoleOptions": "openOnSessionStart",
}
]
}
```
Sample code
Controller with the worker method
```
export default class Controller {
worker_pool: WorkerPool.Pool>
constructor() {
this.story_worker_pool = Pool(() => spawn(new Worker("./worker.worker")))
}
async method() {
return this.worker_pool.queue(async worker => {
processed_items = await worker.processItems(items)
})
}
}
```
worker
```
export class Worker implements WorkerModule {
[x: string]: WorkerFunction;

public processItems(items): any[] {
items.map((story, index) => {
// do math
});
return items
}
}
expose(Worker as any)
```
How this issue could be resolved? Everything works fine with the sample code after building the source code and running it with node