TypeScript/tests/baselines/reference/recursiveConditionalCrash5.types at eac8907b3f790effcab494546a03a1d25e7d78ed · Andarist/TypeScript · GitHub

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//// [tests/cases/compiler/recursiveConditionalCrash5.ts] ////

=== Performance Stats ===
Instantiation count: 5,000

=== recursiveConditionalCrash5.ts ===
// https://github.com/microsoft/TypeScript/issues/62966

type Prepend<Elm, T extends unknown[]> = T extends unknown
>Prepend : Prepend<Elm, T>
>        : ^^^^^^^^^^^^^^^

  ? ((arg: Elm, ...rest: T) => void) extends (...args: infer T2) => void
>arg : Elm
>    : ^^^
>rest : T
>     : ^
>args : T2
>     : ^^

    ? T2
    : never
  : never;

type ExactExtract<T, U> = (T extends U ? U extends T ? T : never : never) & string;
>ExactExtract : ExactExtract<T, U>
>             : ^^^^^^^^^^^^^^^^^^

type Conv<T, U = T> = {
>Conv : Conv<T, U>
>     : ^^^^^^^^^^

  0: [T];
>0 : [T]
>  : ^^^

  1: Prepend<T, Conv<ExactExtract<U, T>>>;
>1 : Prepend<T, Conv<ExactExtract<U, T>, ExactExtract<U, T>>>
>  : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

}[U extends T ? 0 : 1];