Example of implementing common behaviour accross multiple RxJS requests.

Common-RxJs.ts

// Original - Usage and Implementation

httpClient
	.get("https://google.com")
	.pipe(
		share(),
		retry(2),
		catchError((err, caught) => {
			console.log(`${fileName} - ${err.statusText} (HTTP ${err.status})`, err, caught, optionalParams);
			return throwError(err);
		})
	)

httpClient
	.get("https://bing.com")
	.pipe(
		share(),
		retry(2),
		catchError((err, caught) => {
			console.log(`${fileName} - ${err.statusText} (HTTP ${err.status})`, err, caught, optionalParams);
			return throwError(err);
		})
	)
	
// New - Common Function

public static readonly standardBehaviour = (fileName: string, ...optionalParams) =>
	<T>(source: Observable<T>) =>
		source.pipe(
			share(),
			retry(),
			catchError((err, caught) => {
				console.error(`${fileName} - ${err.statusText} (HTTP ${err.status})`, err, caught, optionalParams)
				return throwError(err);
			})
		);
			
// New - Usage

httpClient
	.get("https://google.com")
	.pipe(this.standardBehaviour('myFile.ts', null))
    
httpClient
	.get("https://bing.com")
	.pipe(this.standardBehaviour('myFile.ts', null))