Typscript Question

Ionic Framework ionic-v3
#1

Hi All,

I have a file methods.ts, and would like to import a service called dataService.ts. Normally I would use @Component and define a provider, but methods.ts is not a normal display page.

Question

Please can anyone advise how I can make use of dataService.ts from within methods.ts?

Files

methods.ts

import {Component} from '@angular/core';
import {Meteor} from 'meteor/meteor';
import {check, Match} from 'meteor/check';
import {Chats, Messages} from './collections';
import {DataService} from './dataService';

const nonEmptyString = Match.Where((str) => {
  check(str, String);
  return str.length > 0;
});

Meteor.methods({
  addMessage(chatId: string, content: string): void {
    check(chatId, nonEmptyString);
    check(content, nonEmptyString);
    
    const chatExists = !!Chats.find(chatId).count();

    if (!chatExists) throw new Meteor.Error('chat-not-exists',
      'Chat doesn\'t exist');

    Messages.insert({
      chatId: chatId,
      content: content,
      createdAt: new Date()
    });
  }
});

dataService.ts

import { Injectable } from "@angular/core";
import {Chats, Messages} from './collections';

@Injectable()
export class DataService {

    constructor() {
    }

    public getChats() {
        return Chats;
    }

    public getMessages() {
        return Messages;
    }
}