NodeAdapter Memory Leaks indicated with jest --detectLeaks

[antho1jp]

Description

This appears to be similar if not the same issue as 370.

Shareable Source

describe("Simple Example", function () {
  it("fetches a post", async function () {
    const polly = new Polly("Simple Example", {
      adapters: [NodeAdapter], // Hook into `fetch`
      persister: "fs",
      logLevel: "info", // Log requests to console
      mode: MODES.RECORD,
    });
    const response = await fetch(
      "https://jsonplaceholder.typicode.com/posts/1"
    );
    const post: PostData = (await response.json()) as PostData;
    expect(response.status).toBe(200);
    expect(post.id).toBe(1);
    await polly.stop();
  });
});

Error Message & Stack Trace

 FAIL  tests/pollyjs.test.ts
  ● Test suite failed to run

    EXPERIMENTAL FEATURE!
    Your test suite is leaking memory. Please ensure all references are cleaned.

    There is a number of things that can leak memory:
      - Async operations that have not finished (e.g. fs.readFile).
      - Timers not properly mocked (e.g. setInterval, setTimeout).
      - Keeping references to the global scope.

      at onResult (node_modules/@jest/core/build/TestScheduler.js:150:18)
      at node_modules/@jest/core/build/TestScheduler.js:254:19
      at node_modules/emittery/index.js:363:13
          at Array.map (<anonymous>)
      at Emittery.emit (node_modules/emittery/index.js:361:23)

Config

Copy the config used to setup the Polly instance:

const polly = new Polly("Simple Example", {
      adapters: [NodeAdapter], // Hook into `fetch`
      persister: "fs",
      logLevel: "info", // Log requests to console
      mode: MODES.RECORD,
    });

Dependencies

Copy the @pollyjs dependencies from package.json:

"devDependencies": {
    "@pollyjs/adapter-node-http": "^6.0.5",
    "@pollyjs/core": "^6.0.5",
    "@pollyjs/persister-fs": "^6.0.5",
  }

Relevant Links

minimal reproduction

Environment

Node.js v16.15.1
npm v8.11.0
darwin 22.1.0