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import { IParser, OnParse } from "./interfaces.ts";import { Parser } from "./parser.ts";import { OneOf } from "./utils.ts";
export class LiteralsParser<B extends unknown[]>  implements IParser<unknown, OneOf<B>> {  constructor(    readonly values: B,    readonly description = {      name: "Literal",      children: [],      extras: values,    } as const,  ) {}  parse<C, D>(a: unknown, onParse: OnParse<unknown, OneOf<B>, C, D>): C | D {    if (this.values.indexOf(a) >= 0) {      return onParse.parsed(a as OneOf<B>);    }    return onParse.invalid({      value: a,      keys: [],      parser: this,    });  }}
export function literal<A extends string | number | boolean | null | undefined>(  isEqualToValue: A,) {  return new Parser(new LiteralsParser<[A]>([isEqualToValue]));}
export function literals<  A extends string | number | boolean | null | undefined,  Rest extends Array<string | number | boolean | null | undefined>,>(firstValue: A, ...restValues: Rest): Parser<unknown, A | OneOf<Rest>> {  return new Parser(new LiteralsParser([firstValue, ...restValues]));}