HarmonyOS 类实现方案的问题

下面两种实现方式有什么异同，推荐使用哪种呢

1、通过单例暴露出去

2、通过new出来一个实例暴露出去

export class GlobalContext {
  private static instance: GlobalContext;
  private _objects: Map<string, Object | undefined>;

  private constructor() {
    this._objects = new Map<string, Object | undefined>();
  }

  public static getContext(): GlobalContext {
    if (!GlobalContext.instance) {
      GlobalContext.instance = new GlobalContext();
    }
    return GlobalContext.instance;
  }

  getObject(key: string): Object | undefined {
    return this._objects.get(key);
  }

  setObject(key: string, objectClass: Object | undefined): void {
    this._objects.set(key, objectClass);
  }

  deleteObject(key: string): void {
    this._objects.delete(key);
  }
}



import { hilog } from '@kit.PerformanceAnalysisKit';

class Logger {
  private domain: number;
  private prefix: string;
  private format: string = "%{public}s, %{public}s";

  constructor(prefix: string) {
    this.prefix = prefix;
    this.domain = 0xFF00;
  }

  debug(...args: Object[]): void {
    hilog.debug(this.domain, this.prefix, this.format, args);
  }

  info(...args: Object[]): void {
    hilog.info(this.domain, this.prefix, this.format, args);
  }

  warn(...args: Object[]): void {
    hilog.warn(this.domain, this.prefix, this.format, args);
  }

  error(...args: Object[]): void {
    hilog.error(this.domain, this.prefix, this.format, args);
  }
}

export default new Logger('[iTalentApp]');