When a function parameter has type `NoInfer<T>`, `T` is removed from the generated doc

[xuhdev]

Search terms

NoInfer, TypeScript 5.4

Expected Behavior

When NoInfer<T> is used in a function parameter, T is retained in the document output of this function parameter. This is because T is still informational, indicating that the function parameter has type T -- it's just that T can't be inferred from this function parameter.

Actual Behavior

T is removed from this function parameter in the doc.

Steps to reproduce the bug

(The corresponding test does not check for C:

typedoc/src/test/behavior.c2.test.ts

Line 1180 in 3398e98

equal(sig.parameters[1].type?.toString(), "NoInfer");

)

1. Download the test file: https://github.com/TypeStrong/typedoc/blob/3398e98dce4de5d7c5a53f1f6c66e1af8aa28cc9/src/test/converter2/behavior/noInfer.ts

export function createStreetLight<C extends string>(
    colors: C[],
    defaultColor?: NoInfer<C>,
) {}

// @ts-expect-error
createStreetLight(["red", "yellow", "green"], "blue");

2. npm install --save-dev typedoc
3. npx typedoc NoInfer.ts
4. Observe that C is gone from the defaultColor parameter description

Environment

• Typedoc version: 0.25.12
• TypeScript version: 5.4.3
• Node.js version: 20.12.1
• OS: Debian

[Gerrit0]

Huh, that's strange... I must not have been paying enough attention.