import {Injectable} from '../index'; @Injectable() export class Log { logItems: any[]; constructor() { this.logItems = []; } add(value): void { this.logItems.push(value); } fn(value) { return (a1: any = null, a2: any = null, a3: any = null, a4: any = null, a5: any = null) => { this.logItems.push(value); } } clear(): void { this.logItems = []; } result(): string { return this.logItems.join("; "); } }