text: const expect = require("expect.js");
  const stream = require("..");
  const filter = require("../src/filter");
  const map = require("../src/map");
  
  describe("stream module", () => {
    it("should export filter function", () => {
      expect(stream.filter).to.be(filter);
    });
  
    it("should export map function", () => {
      expect(stream.map).to.be(map);
    });
  });
  