Interceptor common way

intercepter-common-way.ts

import { Injectable } from "@angular/core";
import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from "@angular/common/http";
import { Observable } from "rxjs";
import { HeaderService } from "./header.service";

@Injectable()
export class MyInterceptor implements HttpInterceptor {
  constructor(private headerService: HeaderService) {
  }
  intercept(request: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>> {
    const header = this.headerService.getHeader();
    return next.handle(request.clone({setHeaders: {'MyHeader': header}}))
  }
}