After upgrade Angular to 11 from 10. I get Argument of type ‘Subject<void>’ is not assignable to parameter of type ‘ObservableInput<any>’

  angular, typescript

I have this line of code in almost every component file where I have subscribe to an observable returning from singleton service file.

destroy$ : Subject<void> = new Subject<void>()

this._sessionService.toggleMeetingBar.pipe(takeUntil(this.destroy$)).subscribe(result => {
      this.barType = "meetingBar";
      this._sideNav.toggle();
})
  ngOnDestroy(): void {
    this.destroy$.next();
    this.destroy$.complete();
  }

schedule-session.service.ts

  public toggleMeetingBar = new Subject<any>();


    this._session.upsertSession(sessionData).subscribe(result => {
      this.toggleMeetingBar.next(false);
    });

Now after upgrading to Angular 11. I get below error flooded in my terminal. There are many other issue regarding Firestore. But I am more concern with this one. I did this to clear the memory when the component is destroyed.

Error: src/app/shared/components/auto-complete/auto-complete.component.ts:77:34 - error TS2345: Argument of type 'Subject<void>' is not assignable to parameter of type 'ObservableInput<any>'.
  Type 'Subject<void>' is not assignable to type 'Observable<any>'.

77         .pipe(take(1), takeUntil(this._onDestroy))

How can I fixed this error ?

My package.json

  "dependencies": {
        "@angular-material-components/datetime-picker": "5.1.0",
        "@angular/animations": "^11.2.12",
        "@angular/cdk": "^11.2.11",
        "@angular/common": "11.2.12",
        "@angular/compiler": "11.2.12",
        "@angular/core": "11.2.12",
        "@angular/fire": "^6.1.4",
        "@angular/forms": "11.2.12",
        "@angular/material": "11.2.11",
        "@angular/material-moment-adapter": "11.2.11",
        "@angular/platform-browser": "11.2.12",
        "@angular/platform-browser-dynamic": "11.2.12",
        "@angular/router": "11.2.12",
        "@filestack/angular": "^1.3.0",
        "@fortawesome/angular-fontawesome": "^0.8.2",
        "@fortawesome/fontawesome-free": "^5.15.3",
        "@fortawesome/fontawesome-svg-core": "^1.2.35",
        "@fortawesome/free-brands-svg-icons": "^5.15.3",
        "@fortawesome/free-solid-svg-icons": "^5.15.3",
        "@fullcalendar/angular": "5.6.0",
        "@fullcalendar/core": "5.6.0",
        "@fullcalendar/daygrid": "5.6.0",
        "@fullcalendar/interaction": "5.6.0",
        "@fullcalendar/list": "5.6.0",
        "@fullcalendar/moment": "5.6.0",
        "@fullcalendar/rrule": "5.6.0",
        "@fullcalendar/timegrid": "5.6.0",
        "@syncfusion/ej2-angular-navigations": "^19.1.58",
        "@syncfusion/ej2-angular-progressbar": "^19.1.57",
        "@syncfusion/ej2-angular-richtexteditor": "^19.1.57",
        "@syncfusion/ej2-angular-splitbuttons": "^19.1.54",
        "@syncfusion/ej2-layouts": "^19.1.58",
        "@types/jspdf": "^1.3.3",
        "@types/stripe": "^8.0.416",
        "apexcharts": "^3.26.1",
        "bootstrap": "^4.6.0",
        "crypto-js": "4.0.0",
        "filestack-js": "^3.23.1",
        "firebase": "^8.4.3",
        "font-awesome": "^4.7.0",
        "highlight.js": "10.7.2",
        "jquery": "^3.6.0",
        "jspdf": "^2.3.1",
        "lodash-es": "4.17.21",
        "moment": "^2.29.1",
        "ng-apexcharts": "^1.5.9",
        "ng-circle-progress": "^1.6.0",
        "ng-starrating": "^1.0.20",
        "ng-stripe-checkout": "^1.0.4",
        "ng-wistia-components": "0.0.2",
        "ngx-device-detector": "^2.0.8",
        "ngx-infinite-scroll": "^10.0.1",
        "ngx-markdown": "11.1.3",
        "ngx-mat-select-search": "^3.2.0",
        "ngx-moment": "^5.0.0",
        "ngx-pagination": "^5.0.0",
        "ngx-quill": "^13.3.1",
        "ngx-sharebuttons": "^8.0.5",
        "ngx-toastr": "^13.2.1",
        "perfect-scrollbar": "1.5.0",
        "quill": "1.3.7",
        "rrule": "2.6.8",
        "rxjs": "7.0.0",
        "stripe": "^8.145.0",
        "stripe-angular": "^1.7.0",
        "tslib": "2.2.0",
        "web-animations-js": "2.3.2",
        "zone.js": "0.11.4"
    },
    "devDependencies": {
        "@angular-devkit/build-angular": "0.1102.11",
        "@angular/cli": "11.2.11",
        "@angular/compiler-cli": "11.2.12",
        "@angular/language-service": "11.2.12",
        "@types/crypto-js": "4.0.1",
        "@types/highlight.js": "9.12.4",
        "@types/jasmine": "3.6.10",
        "@types/jasminewd2": "2.0.8",
        "@types/lodash-es": "4.17.4",
        "@types/node": "15.0.1",
        "codelyzer": "6.0.2",
        "jasmine-core": "3.7.1",
        "jasmine-spec-reporter": "7.0.0",
        "karma": "6.3.2",
        "karma-chrome-launcher": "3.1.0",
        "karma-coverage-istanbul-reporter": "3.0.3",
        "karma-jasmine": "4.0.1",
        "karma-jasmine-html-reporter": "1.5.4",
        "lodash": "^4.17.21",
        "protractor": "7.0.0",
        "tailwindcss": "2.1.2",
        "ts-node": "9.1.1",
        "tslint": "6.1.2",
        "typescript": "^4.1.5"
    }

Basic import

import { Component, HostListener, Inject, OnInit, ViewChild } from '@angular/core';
import { Sessions } from "../../../customApi/sessions";
import { SessionLogsService } from '../session-logs.service';
import { Utils } from 'app/shared/utils/utils';
import { MatTableDataSource } from '@angular/material/table';
import { UserConstant } from 'app/user.constant';
import { DOCUMENT } from '@angular/common';
import { ReplaySubject, Subject } from 'rxjs';
import { takeUntil } from 'rxjs/operators';

Source: Angular Questions

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