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