Performance loss between latest and v6.5.3

[eamodio]

Current behavior

Slower than v6.5.3. On my machine yarn build takes ~8.2s on v6.5.3 and ~11.3s on v9.0.2

Expected behavior

Same or faster than v6.5.3

Steps to reproduce the issue

1. Clone GitLens and checkout to this https://github.com/gitkraken/vscode-gitlens/tree/390a5b76241bc04806da1c33fc8c346596b4be46
2. Run yarn build and see the perf of v6.5.3
3. Upgrade fork-ts-checker-webpack-plugin to the latest
4. Run yarn build and see the perf of the latest

Issue reproduction repository

https://github.com/gitkraken/vscode-gitlens/

Environment

• fork-ts-checker-webpack-plugin: [9.0.2]
• typescript: [5.3.2]
• eslint: [8.55.0]
• webpack: [5.89.0]
• os: [Windows 11]