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import { IParser, OnParse } from "./interfaces.ts";import { isString } from "./utils.ts";
export class StringParser implements IParser<unknown, string> {  constructor(    readonly description = {      name: "String",      children: [],      extras: [],    } as const,  ) {}  parse<C, D>(a: unknown, onParse: OnParse<unknown, string, C, D>): C | D {    if (isString(a)) return onParse.parsed(a);
    return onParse.invalid({      value: a,      keys: [],      parser: this,    });  }}