Issue TS2304: Unable to locate symbol 'ITokenResponse'

I encountered this error message:

Error TS2304: Unable to locate the name 'ITokenResponse'.

Even after trying to import as suggested in a StackOverflow response, I encountered another error:

Error TS2306: File 'C:/Repository/MAngular/src/app/interfaceModals/ItokenResponse.ts' is not recognized as a module.

Any ideas on how I can resolve this? Here's the code snippet below. I'm currently working with Angular12. Thank you for your help!!

import { Inject, Injectable, PLATFORM_ID } from '@angular/core';
import {HttpClient} from '@angular/common/http';
import {map, tap} from 'rxjs/operators' ;
import { isPlatformBrowser } from '@angular/common';



@Injectable({
  providedIn: 'root'
})
export class AuthenticationService {

  client_id: string = "Manage";
  authKey: string ="auth";
  roleKey: string="role";

  constructor(private http: HttpClient, @Inject(PLATFORM_ID) private platformId:any) { }

  login(username: string, password: string, userRole: string){
      var data ={
        username: username,
        password: password,
        client_id: this.client_id,
        grant_type: "password",
        role_name: userRole
      };
      this.http.post<ITokenResponse>('url', data)
        .pipe(map( tkDetails => {
          let checkIfTokenConditions =  tkDetails && tkDetails.token;
          //the above statement is lambda expresion. it checks if the 
          if(checkIfTokenConditions){
            this.setAuth(tkDetails);
            this.setRole(tkDetails.role_name);
          }
          return tkDetails;
     }))
      
  }

Answer №1

If you want to share classes, interfaces, functions, or variables across different files (also known as global scope), you must use the export keyword.

ItokenResponse.ts

export interface ITokenResponse {
    token: string;
    expiration: number;
    refresh_token: string;
    role_name: string;
}

After that, you'll need an import statement to access a variable, function, class, or interface exported from a different module(s).

authentication-service.ts

import { ITokenResponse } from 'src/app/interfaceModals/ItokenResponse';

export class AuthenticationService {
 ...
}

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