Memory Leak

[samirachamplin]

Describe the bug

There appears to be a memory leak with spectral. The resident memory on the machine continues to rise with each validation, and eventually runs out of space and crashes.

To Reproduce

Repeatedly lint a document with spectral.run() in a loop.

Here is the example code snippet that was used:

export async function validate(spec: string): Promise<ISpectralDiagnostic[]> {
  const spectral = new Spectral();
  const ruleset = new Ruleset({extends: [oas]})
  spectral.setRuleset(ruleset);
  while (true) {
    const result = await spectral.run(spec);
    console.log(result.length);
  }
  return spectral.run(spec);
}

Expected behavior
We would expect resident memory to be cleared so the app doesn't crash.

Screenshots

See RES where the residential memory continues to rise. These were captured with htop.

Environment (remove any that are not applicable):

• "@stoplight/spectral-core": "^1.12.2",
• "@stoplight/spectral-formats": "^1.2.0",
• "@stoplight/spectral-functions": "^1.6.1",
• "@stoplight/spectral-rulesets": "^1.9.0",
• OS: macOS Big Sur