TBConsoleClient/src/app/app.component.ts

import { Component } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { FormControl } from '@angular/forms';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent {
  title = 'TBConsoleClient';

  logMessages = '';

  commandControl: FormControl = new FormControl('');

  constructor(private http: HttpClient) {
  }

  async sendCommand() {
    try {
      const res = await this.http.post('http://localhost:8019/', this.commandControl.value, {responseType: 'text'}).toPromise();
      this.logMessages += res + "\n";
    } catch (e) {
      if (e.status == 0)
        this.logMessages += "Failed to contact mod! Make sure it is running and listening.\n";
      else
        this.logMessages += e.message + "\n";
    }
  }
}