Following MDL-73915, it would make sense to upgrade Eslint and audit all existing rules.

This includes:

• Remove plugins already included into current "@babel/preset-env":
  • "@babel/plugin-proposal-class-properties"
  • "@babel/plugin-proposal-json-strings"
  • "@babel/plugin-syntax-dynamic-import"
  • "@babel/plugin-syntax-import-meta"
• Upgrade "eslint" to latest version
• Replace "eslint-plugin-babel" (depreacted in 2019) with "@babel/eslint-parser" and "@babel/eslint-plugin"

Eslint changes:

• Use 'eslint:recommended' and make it pass with no errors having minimum possible number of rules defined in .eslintrc file.

All removed rules need to be audited in a way:

• deprecated rules needs to be removed (may be with help of sarbbottam/eslint-find-rules)
• those covered by "eslint:recommended" set also can be removed from explicit listing if they match recommeded value
• only additionally required rules to complay with coding style should remain
• while auditing rules, consider using 'plugin:promise/recommended' and 'plugin:jsdoc/recommended'
• finally, add 'reportUnusedDisableDirectives' eslint setting - this will help to clean up unused /* eslint-disable... */ statements