Import
import { Parser } from "@typed/router/Parser";Access Parser.TakeWhile through the imported Parser export. Its declaration below describes the member.
Signatures
interface TakeWhile<Allowed extends string> extends TypeFunction<string, Result<string, string>> {
readonly return: InputOf<this> extends infer Input extends string ? TakeWhileInternal<Input, Allowed> : never;
}Why
It preserves the precise consumed prefix and remaining suffix.
Ownership and lifetime
TypeScript instantiates TakeWhile while parsing a string-literal input; partial results and unconsumed text exist only in the resulting type.
Property: return
Computes this type lambda’s parse result for its current input.
Property: return: Why
The local type-function protocol evaluates each parser combinator through this member without a parallel runtime object.
Property: return: Ownership and lifetime
TypeScript evaluates TakeWhile.return when the surrounding parser is applied; the associated result is erased and retains no input at runtime.