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=5.9.2&fileType=.tsx&code=PTAECECcHsGsFMB2oDEBGAUPAHgB2pAC6gCWih8kAZgIYDG8oAKgJ67wCCoA3qAPokAJgH4AXKADOhSGQDmoAL5Y8BYoTaNW7cKAC8zDVwBkPUPyHipMxPKUYQEGAmQoATBioBXRHUIloyBLQALbwhAAWcgAUAG40ADae8OLQAEYAVvC%2BoAA%2BoGmZvgDaALoAlDwYZg5MAPIAIrUYdg5QcEioAMwe3r7%2ByMHQdLAAYmF04VGp0IIs4hyQkDQs4J5UVJS5EPFpWwCiiwRbBVnEeVZyW4ie8fF6oNe3FdxVoDUNTUpAA&eslintrc=N4KABGBEBOCuA2BTAzpAXGUEKQAIBcBPABxQGNoBLY-AWhXkoDt8B6Jge1ukQBNYmvAIYtaRUrTIcmyfJXyxELVBkiJo0DtEjgwAXxB6gA&tsconfig=N4XyA&tokens=false

Repro Code

// Broken #1exportinterfaceTypeA{_id?:string}exporttypeTypeB=TypeA&{_id:string}// Broken #2functionsomething(value:object|object[]){// TODO}// Broken #3functionmockFetch(body:ArrayBuffer|Blob|Error|object|string|null=null){// TODO}

ESLint Config

module.exports={parser:"@typescript-eslint/parser",rules:{"@typescript-eslint/no-redundant-type-constituents":"error"},};

tsconfig

{}

Expected Result

All the examples in the repo should be fine, they don't duplicate types

Actual Result

All three examples are broken:

• Example 1 doesn't like_id replacing_id?
• Example 2 doesn't like unionobject | object[] (two different types...)
• Example 3 doesn't like Error, becaue it's a type ofobject, even though the two should be distinct

Additional Info

No response