# Parser.Many1Internal

Runs one required repetition before delegating to zero-or-more parsing.

## Signatures

```ts
type Many1Internal<P extends Any, Input extends string> = Apply<P, Input> extends infer R ? [
    R
] extends [
    never
] ? never : R extends readonly [
    infer Value,
    infer Rest extends string
] ? IsNoProgress<Input, Rest> extends true ? never : ManyInternal<P, Rest, readonly [
    Value
]> : never : never;
```

## Why

Many1 fails when the first parse fails or makes no progress.

## Ownership and lifetime

`Many1Internal` performs its required first parse only in TypeScript's type system, then delegates
to `ManyInternal`; no runtime parser value exists.