Const type parameter or F.Narrow

Proper inference constraints

infer keyword usage

Fallback in conditional types

[number] array indexing

as const with [number]

Obj[keyof Obj] value union

Tuple anti-distribution

Multiple approaches

Type tests

Overloads mirror wrapped API

Specific before general

Implementation signature compatibility

Implementation not callable directly

Generic constraints in overloads

Type inference verified

Before/after comparison

Overload theory explained

Multiple wrapping approaches

Type tests present

Mapped type with as clause

Never to filter keys

Template literal types

String-only template literals

Discriminated union

Exhaustiveness check

Callback narrowing awareness

Intersection type accumulation

never for union filtering

Type theory explanation

Opaque pattern

Multiple opaque types

Assertion function syntax

Type predicate syntax

Both predicate and assertion present

Async utility types

typeof with utility types

Type theory explanation

Before/after comparison

Type tests

Pre-change tsc output captured

Post-change tsc output captured

No any in solution

ts-expect-error usage

Bottom-up error diagnosis

Strict mode enabled

Before/after representation

keyof generics pattern

Test type breakdown

typeof with utility types