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Pull Request Test Coverage Report forBuild 6905719951

• 69 of72(95.83%) changed or added relevant lines in4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.06%) to91.318%

Totals
Change from baseBuild 6901776316:	0.06%
Covered Lines:	2386
Relevant Lines:	2528

💛 -Coveralls

If$derived set initial value, it can not be a falsy value, so do we need to handle this?
(Now always$__derivedArgument returns T | null right?)

https://typescript-eslint.io/play/#ts=5.2.2&fileType=.ts&code=FAEwpgxgNghgTmABAMwK4DsIBcCWB7dRAEgGcsYswAeAFQD4AKHdHXGKALkRoEouaA3KEiwEKDNnyFS5SrUZ9uiAD6IM4ZMzAgh4aPCRpMuAsXBwcAN23yGYAB4AHBCRJT%2BiwcAeO8cLIhYAJ6OSACS6Mh4iAC8iADeiOhc6KgAtgBGYHCIAL5CUGABMLHEZBTUEVGMicmIAIx5PEIlcepgmujaBUWIGaVE5lbaDAw8sXSIMAD8AHSE09OIAAyIiADUiABMzUA&eslintrc=N4KABGBEBOCuA2BTAzpAXGUEKQAIBcBPABxQGNoBLY-AWhXkoDt8B6Jge1tieQEMAZolp9oAc1gBbRC3RRE0aB2iRwYAL4h1QA&tsconfig=N4KABGBEDGD2C2AHAlgGwKYCcDyiAuysAdgM6QBcYoEEkJemy0eFYDAruuGAL4g9A&tokens=false

I don't think falsy value has much to do with it.
So I think$derived should always be converted to virtual code.

typeInfo1={n:number};typeInfo2={n:string};leta=$state<Info1|Info2>({n:1});a={n:1}letb=$derived(a.n);//  ^? b: numberletc=$derived((()=>{//  ^? c: string | numberreturn$__derivedArgument();function$__derivedArgument(){returna.n}})());

https://typescript-eslint.io/play/#ts=5.2.2&fileType=.ts&code=FAEwpgxgNghgTmABAMwK4DsIBcCWB7dRAEgGcsYswAeAFQD4AKHdHXGKALkRoEouaA3KEiwEKDNnyFS5SrUZ9uiAD6IM4ZMzAgh4aPCRpMuAsXBwcAN23yGYAB4AHBCRJT%2BiwcCwBPR0gBJdGQ8AEZEAF5EAG9EdC50VABbACMwOEQAXyFff0QgkIAmSJi4rjILdABzLKEoMCxEGBKZCmoCsJV84LxCxlj4xHDMniFmqIGuYeB6xpSW8yttBhgAOnRR4AB6LcREAD0AfkQUhOS0uBmGxAgF9KWQBieeSLoY7d2D44hyrEqa1SJVLpYB7BBYVBwaQAfWhi2sIAAgnAqskwOgsAxNnsjJJTERYfDtMjUUl0ZiXtFQXtEODIYQ1uhqZlgCMsZsgA&eslintrc=N4KABGBEBOCuA2BTAzpAXGUEKQAIBcBPABxQGNoBLY-AWhXkoDt8B6Jge1tieQEMAZolp9oAc1gBbRC3RRE0aB2iRwYAL4h1QA&tsconfig=N4KABGBEDGD2C2AHAlgGwKYCcDyiAuysAdgM6QBcYoEEkJemy0eFYDAruuGAL4g9A&tokens=false