Before You File a Bug Report Please Confirm You Have Done The Following...

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I havesearched for related issues and found none that matched my issue.
• I haveread the FAQ and my problem is not listed.

Playground Link

https://typescript-eslint.io/play/#ts=5.0.3&sourceType=module&code=KYDwDg9gTgLgBAYwgOwM72MgrgWzgFQE8xgAxAGwEMBzVOAbwCg44BBZQuAXjgEY4APALgAGADTM4AVWQBrZBADuybn0HDeElgGUYUAJbJqq-kLgAmLXAByuAEbAoJ9XADMVgEIQI5YJRU8psIALIwAvoyMoJCwcABmWMgIMPoocAAWlKhEJBQ0ABSoEFhQCMAAXATEZFS0YnAwlFDUwDCVOTU0qACUDJJQrSUqhcWlwHAAZA1NLTC9XAvTza0A3OFAA&eslintrc=N4KABGBEBOCuA2BTAzpAXGUFvcgAQBcBPABxQGNoBLEggWhXioDsCB6ZgeztmeQEMAZogbNYAWzrlO4kv2rJOzdFETRonaJHBgAviF1A&tsconfig=N4KABGBEDGD2C2AHAlgGwKYCcDyiAuysAdgM6QBcYoEEkJemy0eAcgK6qoDCAFutAGsylBm3TgwAXxCSgA

Repro Code

exportconstenumTypeFlags{Any=1<<0,Unknown=1<<1,String=1<<2,Number=1<<3,Boolean=1<<4}exportfunctionhasTypeFlag(source:TypeFlags,target:TypeFlags){return(source&target)===target;}

ESLint Config

module.exports={"rules":{"@typescript-eslint/no-unsafe-enum-comparison":"error"}}

tsconfig

{"compilerOptions": {"strictNullChecks":true  }}

Expected Result

TypeScript compiler is using bit mask pattern internally. It is rare, but useful thing. A bitwise operator is used in comparison, but otherwise enum is compared with itself. Should this be allowed or at least have a config option, perhaps? What do you think?

Also possible to rework the code. It felt more readable with===, but could be like this too:

exportfunctionhasTypeFlag(source:TypeFlags,target:TypeFlags){returnBoolean(source&target);}

Actual Result

Good idea to add theno-unsafe-enum-comparison. As you can see in reproduction, currently it does not work with bit mask pattern. Might be it was simply overlooked use case.

Additional Info

No response