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0

I am trying to move heavy calculation task or method-calls to separate web workers. I am using URL.createObjectURL(blob) to inject worker code. But from the code, it has to call some other functions which are defined in Typescript (it is hard to put all complex logic in the worker's blob).

let workers = ;

export function mapWorker<T, R>(cb: (value: T) => R, input: any): Observable<R>

 const subject = new Subject<R>();
 let workerString = cb.toString();
 let worker: Worker;

 if (workers[workerString])
 
 worker = workers[workerString];
 else
 worker = createStaticWorker(cb);
 workers[workerString] = worker;
 

 worker.onmessage = e => subject.next(e.data);
 worker.onerror = err => subject.error(err);
 worker.postMessage(input);
 return subject;


export function createStaticWorker(fn: Function): Worker

 const blob = new Blob(
 [ 'self.cb = ', fn.toString(), ';',
 'self.onmessage = function (e) self.postMessage(self.cb(e.data)) '
 ], 
 type: 'text/javascript'
 
 );
 const url = URL.createObjectURL(blob);
 return new Worker(url);

When using it, I did this.

 mapWorker(x =>
 
 return Helper.AsyncCalc(x as Array<any>);
 , inputs).subscribe(value => this.areas = value);

Then 'Helper.AsyncCalc' was the method defined in Helper.ts which contains majority of the logic. I noted that in run time the 'helper' name has been
compiled to different name in JS which led to an error saying that was undefined. Could someone help on this? Is there any way to call Typescript method from that js inline method?

Thanks so much in advance.

javascript angular typescript web

share|improve this question

asked Mar 26 at 2:26

RichRich

4299 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I am really not into TypeScript nor Angular, but your question basically asks how to eval TypeScript source at run time, just like this question did before. So I won't use mjolnir here, but if you think your question indeed is the same as this one, let me know, so I can link them together.
  
  – Kaiido
  Mar 26 at 3:11
  

  
  
  
  

add a comment | 

0

I am trying to move heavy calculation task or method-calls to separate web workers. I am using URL.createObjectURL(blob) to inject worker code. But from the code, it has to call some other functions which are defined in Typescript (it is hard to put all complex logic in the worker's blob).

let workers = ;

export function mapWorker<T, R>(cb: (value: T) => R, input: any): Observable<R>

 const subject = new Subject<R>();
 let workerString = cb.toString();
 let worker: Worker;

 if (workers[workerString])
 
 worker = workers[workerString];
 else
 worker = createStaticWorker(cb);
 workers[workerString] = worker;
 

 worker.onmessage = e => subject.next(e.data);
 worker.onerror = err => subject.error(err);
 worker.postMessage(input);
 return subject;


export function createStaticWorker(fn: Function): Worker

 const blob = new Blob(
 [ 'self.cb = ', fn.toString(), ';',
 'self.onmessage = function (e) self.postMessage(self.cb(e.data)) '
 ], 
 type: 'text/javascript'
 
 );
 const url = URL.createObjectURL(blob);
 return new Worker(url);

When using it, I did this.

 mapWorker(x =>
 
 return Helper.AsyncCalc(x as Array<any>);
 , inputs).subscribe(value => this.areas = value);

Then 'Helper.AsyncCalc' was the method defined in Helper.ts which contains majority of the logic. I noted that in run time the 'helper' name has been
compiled to different name in JS which led to an error saying that was undefined. Could someone help on this? Is there any way to call Typescript method from that js inline method?

Thanks so much in advance.

javascript angular typescript web

share|improve this question

asked Mar 26 at 2:26

RichRich

4299 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I am really not into TypeScript nor Angular, but your question basically asks how to eval TypeScript source at run time, just like this question did before. So I won't use mjolnir here, but if you think your question indeed is the same as this one, let me know, so I can link them together.
  
  – Kaiido
  Mar 26 at 3:11
  

  
  
  
  

add a comment | 

I am trying to move heavy calculation task or method-calls to separate web workers. I am using URL.createObjectURL(blob) to inject worker code. But from the code, it has to call some other functions which are defined in Typescript (it is hard to put all complex logic in the worker's blob).

let workers = ;

export function mapWorker<T, R>(cb: (value: T) => R, input: any): Observable<R>

 const subject = new Subject<R>();
 let workerString = cb.toString();
 let worker: Worker;

 if (workers[workerString])
 
 worker = workers[workerString];
 else
 worker = createStaticWorker(cb);
 workers[workerString] = worker;
 

 worker.onmessage = e => subject.next(e.data);
 worker.onerror = err => subject.error(err);
 worker.postMessage(input);
 return subject;


export function createStaticWorker(fn: Function): Worker

 const blob = new Blob(
 [ 'self.cb = ', fn.toString(), ';',
 'self.onmessage = function (e) self.postMessage(self.cb(e.data)) '
 ], 
 type: 'text/javascript'
 
 );
 const url = URL.createObjectURL(blob);
 return new Worker(url);

When using it, I did this.

 mapWorker(x =>
 
 return Helper.AsyncCalc(x as Array<any>);
 , inputs).subscribe(value => this.areas = value);

Then 'Helper.AsyncCalc' was the method defined in Helper.ts which contains majority of the logic. I noted that in run time the 'helper' name has been
compiled to different name in JS which led to an error saying that was undefined. Could someone help on this? Is there any way to call Typescript method from that js inline method?

Thanks so much in advance.

javascript angular typescript web

share|improve this question

asked Mar 26 at 2:26

RichRich

4299 bronze badges

let workers = ;

export function mapWorker<T, R>(cb: (value: T) => R, input: any): Observable<R>

 const subject = new Subject<R>();
 let workerString = cb.toString();
 let worker: Worker;

 if (workers[workerString])
 
 worker = workers[workerString];
 else
 worker = createStaticWorker(cb);
 workers[workerString] = worker;
 

 worker.onmessage = e => subject.next(e.data);
 worker.onerror = err => subject.error(err);
 worker.postMessage(input);
 return subject;


export function createStaticWorker(fn: Function): Worker

 const blob = new Blob(
 [ 'self.cb = ', fn.toString(), ';',
 'self.onmessage = function (e) self.postMessage(self.cb(e.data)) '
 ], 
 type: 'text/javascript'
 
 );
 const url = URL.createObjectURL(blob);
 return new Worker(url);

 mapWorker(x =>
 
 return Helper.AsyncCalc(x as Array<any>);
 , inputs).subscribe(value => this.areas = value);

javascript angular typescript web

javascript angular typescript web

share|improve this question

asked Mar 26 at 2:26

RichRich

4299 bronze badges

share|improve this question

asked Mar 26 at 2:26

RichRich

4299 bronze badges

asked Mar 26 at 2:26

RichRich

4299 bronze badges

asked Mar 26 at 2:26

RichRich

4299 bronze badges