service-resolver.ts

import { Injector } from "@angular/core";
import { MessageTypeEnum } from "../model/message-type.enum";
import { LogService } from "../services/log.service";
import { ErrorService } from "../services/error.service";
import { TableService } from "../services/table.service";
import { Executioner } from "../model/executioner";
export class ServiceResolver {

    static getService(message: MessageTypeEnum, injector: Injector): Executioner {
        switch(message){
            case MessageTypeEnum.ConsoleError:
                return injector.get(ErrorService);
            case MessageTypeEnum.ConsoleLog:
                return injector.get(LogService);
            case MessageTypeEnum.ConsoleTable:
                return injector.get(TableService);
        }
        throw Error ('Service not found');
    }
}