当返回值取决于未标注的参数时,Tuple morph 会推断 `.infer` 为 `never`

import { scope } from "arktype"

// ❌ tuple morph, parameter NOT annotated, return DEPENDS on the parameter // -> .infer (output) is never bug: ["Base", "=>", (d) => d],

// ✅ same morph with the parameter annotated -> .infer = { text: string } fixedByAnnotation: ["Base", "=>", (d: { text: string }) => d],