Function createRequest

test/function_wrappers.ts:20–30

(
    body: object | string,
    headers?: {[key: string]: string},
  )

  };

  const createRequest = (
    body: object | string,
    headers?: {[key: string]: string},
  ) =>
    ({
      body,
      // eslint-disable-next-line @typescript-eslint/no-unused-vars
      header: (h: string) => {
        return headers === undefined ? '' : headers[h];
      },
    }) as Request;

  class ResponseMock extends EventEmitter {
    public headers: {[key: string]: string} = {};