message: fixing fetch mock
diff: @@ -3,7 +3,7 @@ export class FetchMock {
  constructor() {
  this.fetchCache = null;
  }
  - mockResponse(data) {
  + public mockResponse(data) {
  // @ts-ignore
  this.fetchCache = global.fetch;
  // @ts-ignore
  @@ -17,7 +17,7 @@ export class FetchMock {
  });
  });
  }
  - mockError(e) {
  + public mockError(e) {
  // @ts-ignore
  this.fetchCache = global.fetch;
  // @ts-ignore
  @@ -26,10 +26,10 @@ export class FetchMock {
  throw new Error(e);
  });
  }
  - restore() {
  + public restore() {
  // @ts-ignore
  global.fetch = this.fetchCache;
  }
  }
  -export default FetchMock;
  +export default new FetchMock();
  