TSLint and Codelyzer have been officially deprecated . Angular now recommends migrating to the community-driven angular-eslint stack.
The Angular team completed a massive "triage" effort, addressing every open issue in their core repositories and committing to a two-week turnaround for all future reports. What’s new in Angular 11
You can now enable Hot Module Replacement (HMR) simply by running ng serve --hmr . This allows you to update code and styles instantly without a full browser refresh, preserving the application state. TSLint and Codelyzer have been officially deprecated