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Unchecked indexed access

@RiccardoOdone•Suggest a tip•

Increase type-safety with `noUncheckedIndexedAccess`, which is not included in `strict`.

// tsconfig.json
// "strict": true

declare const xs: number[]

const index = xs[xs.length - 1]
//    ^? ⛔️ number
const at = xs.at(-1)
//    ^? ✅ number | undefined

// tsconfig.json
// "noUncheckedIndexedAccess": true

declare const xs: number[]

const index = xs[xs.length - 1]
//    ^? ✅ number | undefined
const at = xs.at(-1)
//    ^? ✅ number | undefined
Type-safe carouselDo not throwFilter using a type assertionUse precise typesType-safe string templatingEnumerating a union typeNumbers with unitsZero nullEnumerating statusesAnd typesAvoiding window as anyUse descriptive valuesCheck authorization with typesExtract union types from record typesKeep in sync with conditional typesType-safe pickPass arguments by namePick instead of duplicatingPrevent mutationsType aliasesModel with different typesPrefer static types over testsPush conditionals downType-level functionsCheck Authorization With Types (again)From Union to TupleLimit typesLaser-focused typesCallable typesPartial considered harmfulSatisfy typesWTH?!Parse, don't castNarrow typesFetch footgunModel with different types (2)Polymorphic typesParse, don't cast (again)Type-safe envObject vs Recordconst Type ParametersDigType checksExpand intellisenseNumbers with units (2)Unchecked indexed accessExtract instead of duplicating

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