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=5.7.2&fileType=.tsx&code=CYUwxgNghgTiAEYD2A7AzgF3hkmCMAXPABQCU8AvAHzwBGSSEIUKA3AFCiSwLLpY5MAJiJlKNAK4oA1iiQB3Np3DQ4iVJmy4MAZiIAeACpUx1eIY5dVvDQO0AWA4fggAHjhTA0dBkxYnyMwt2dgB6UPgAByg0NFx2AG08ABp4FAkICABdADoAMwBLCBwYYkEMPFIOMIjo2Pik1PTM3MLikFLyoSqQ8Pg0AAskDOAomLRElLSM7PyikrLtHR6a-qGRsdjJppnW%2BY7FzHseoA&eslintrc=N4KABGBEBOCuA2BTAzpAXGUEKQAIBcBPABxQGNoBLY-AWhXkoDt8B6Jge1tiacTJTIAhtEK0yHJgBNK%2BSpPRRE0aB2iRwYAL4gtQA&tsconfig=N4KABGBEDGD2C2AHAlgGwKYCcDyiAuysAdgM6QBcYoEEkJemy0eAcgK6qoDCAFutAGsylBm3TgwAXxCSgA&tokens=false

Repro Code

declareconsttest1:()=>boolean;declareconsttest2:()=>unknown;declareconsttest3:<T>()=>T;declareconsttest4:<Textendsboolean>()=>T;// passes[1,null].filter(test1);// passes[1,null].filter(test2);// should pass[1,null].filter(test3);// should pass[1,null].filter(test4);

ESLint Config

module.exports={parser:"@typescript-eslint/parser",rules:{"@typescript-eslint/no-unnecessary-condition":"error"},};

tsconfig

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

Expected Result

I expect all use-cases to be consistent and not report as errors.

Actual Result

The use-cases with a type constraint report (unnecessarily) as an error.

Additional Info

This seems similar to#10311 and looks like the fix should be similar.