Vadim Petrov Komock

nilsmehlhorn / 0-throw-for-codes.ts

Last active March 17, 2020 13:51

RxJS operator for throwing semantic errors for certain HTTP status codes (now part of ngx-operators)

	import { Observable, throwError } from 'rxjs'
	import { catchError } from 'rxjs/operators'
	import { HttpErrorResponse } from '@angular/common/http'

	export const throwForCodes = (codeErrors: Array<[number, () => Error]>) => {
	const mappedCodeErrors = new Map(codeErrors)
	return <T>(source: Observable<T>) =>
	source.pipe(catchError(error => {
	if (error instanceof HttpErrorResponse) {
	const mappedErrorFn = mappedCodeErrors.get(error.status)