Suggestion

Taking 18ea3b1's https://github.com/typescript-eslint/typescript-eslint/actions/runs/5588135268/ as an example:

• eslint-plugin run without the flag: 8m 6s
• eslint-plugin run with the flag: 34m 9s

The Node version is 18 with the flag and 16 or 20 without, but that's just a quirk of the CI file. I've found it to be slower locally as well. This should be investigated.

@bradzacher and I noticed this when we first merged. cc @jakebailey - if you have the time, we'd appreciate any tips you have on it. We haven't investigated deeply yet.