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=4.8.3&sourceType=module&code=KYDwDg9gTgLgBAMwK4DsDGMCWEVwEYAUAlAFxwAKUEAtpgM7AA8AbhJgCYB8AsAFCiRYiVBmy5CAQzJ4IEADbAJKUnFYc+A6PGTosOfAQkB+abIVKVlGvSZqucAD6q27OAG8+cOJgRxDcAF4AuBQkOTkiOChgGCQoXCtaBgA6aIArYAwCFGAAdzgAUSgqKGIiTzgYAAsqfJz8opLiPgBfPiA&eslintrc=N4KABGBEBOCuA2BTAzpAXGUEKQAIBcBPABxQGNoBLY-AWhXkoDt8B6Y6AewFtLlFaAM1hMy+Spya0AhskKj0URNC7RI4MAF8QmoA&tsconfig=N4KABGBEDGD2C2AHAlgGwKYCcDyiAuysAdgM6QBcYoEEkJemy0eAcgK6qoDCAFutAGsylBm3TgwAXxCSgA

Repro Code

exportfunctionb():Promise<void>exportfunctionb(a:boolean):voidexportfunctionb(a?:boolean):Promise<void>|void{if(a==null)returnPromise.reject(newError())thrownewError()}

ESLint Config

module.exports={parser:"@typescript-eslint/parser",rules:{"@typescript-eslint/promise-function-async":"error",},};

tsconfig

{"compilerOptions": {// ...  }}

Expected Result

No error.

Actual Result

Error.

Additional Info

Error will disappear if swap line 1 and line 2.

Versions