Argument of type 'Error' is not assignable to parameter of type 'Scheduler'

[hassanasad]

Please provide us with the following information:

OS?

Windows 7, 8 or 10. Linux (which distribution). Mac OSX (Yosemite? El Capitan?)
MacOS Seirra

Versions.

Please run ng --version. If there's nothing outputted, please run in a Terminal: node --version and paste the result here:

angular-cli: 1.0.0-beta.24
node: 7.2.1
os: darwin x64
@angular/common: 2.4.0
@angular/compiler: 2.4.0
@angular/core: 2.4.0
@angular/forms: 2.4.0
@angular/http: 2.4.0
@angular/platform-browser: 2.4.0
@angular/platform-browser-dynamic: 2.4.0
@angular/router: 3.4.0
@angular/compiler-cli: 2.4.0

After the update to angular-cli beta 24 i started getting this error:

ERROR in ./src/app/shared/services/baseapi.service.ts
Module build failed: Error: /Users/hassan/Code/project/src/app/shared/services/baseapi.service.ts (22,20): Argument of type 'Error' is not assignable to parameter of type 'Scheduler'.
  Property 'SchedulerAction' is missing in type 'Error'.)
/Users/hassan/Code/project/src/app/shared/services/baseapi.service.ts (43,20): Argument of type 'Error' is not assignable to parameter of type 'Scheduler'.)
    at _checkDiagnostics (/Users/hassan/Code/project/node_modules/@ngtools/webpack/src/loader.js:116:15)
    at /Users/hassan/Code/project/node_modules/@ngtools/webpack/src/loader.js:141:17
 @ ./src/app/shared/services/user.service.ts 18:0-51
 @ ./src/app/app.module.ts
 @ ./src/main.ts
 @ multi main

This is the code in context:

	httpGet( URL: string, requestOptions = this.getRequestOptions() ): Observable<any> {
		return this.http.get(URL, requestOptions)
			.retryWhen(error => error.delay(200))
			.timeout(20000, new Error('Request timeout'))   <===== LINE 22
			.map(this.extractData).catch(this.handleError);
	}

If i comment line 22 everything works fine. However, i do want to throw that error of timeout. Any suggestions please?

[clydin]

A timeout always throws a Rx.TimeoutError with the latest rxjs. So the error parameter is unnecessary.

[hassanasad]

@clydin thanks - what if i want to modify what it says ? :)

[peterpeterparker]

I'm interested too. I opened a same related question on stackoverflow

http://stackoverflow.com/questions/41320125/how-to-implement-http-post-timeout-wth-last-rjxs-version

[hassanasad]

@peterpeterparker I can see that you updated your question/answer yesterday on stackoverflow. I am still not sure how can you throw a custom error message with that? (If I dont want to check error message in subscribe method).

[peterpeterparker]

@hassanasad I don't know neither except by checking the error in the error part, but at least, it works again ;)

[filipesilva]

Sorry but this isn't a CLI problem so I'll have to close it. Stack Overflow is a good place to ask.

[roshenpo007]

@hassanasad Do you find any solution for this ?

[hassanasad]

I changed my code as follows (it doesn't necessarily solve the issue but i got over it):

// Get data from server
httpGet( URL: string, requestOptions = this.getRequestOptions() ): Observable<any> {
		
	let tried = 0;
	return this.http.get(URL, requestOptions)
		.retryWhen(error => { 
			// Retry when error.status is NOT 500
			return error
				.switchMap((error) => {
					tried++;
					// If number of tried are over - throw error in each case
					if ( tried >= 4 ) return Observable.throw(error);

					// Retry if error.status is NOT 500 otherwise try again
					return (error.status === 500) ? Observable.throw(error) : Observable.of(error);
				})
				.delay( 500 )  // Number of miliseconds between each retry
				.take( 4 );  // Number of tries
		})
		.timeout( 30000 )   // Total number of miliseconds to throw timeout error
		.map(this.extractData)
		.catch(this.handleError);
}

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