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import produce from "https://cdn.skypack.dev/immer?dts";import createStore from "https://cdn.skypack.dev/unistore?dts";import type { Store } from "https://cdn.skypack.dev/unistore?dts";import {  between,  sepBy,  digit,  char,  IParser,  ErrorKind,} from "../mod.ts";
type Digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9";export type Context = Record<Digit, number>;
export const parserContext: Context = {  "0": 0,  "1": 0,  "2": 0,  "3": 0,  "4": 0,  "5": 0,  "6": 0,  "7": 0,  "8": 0,  "9": 0,};
function parseDigitArray(  digitParser: () => IParser<Digit, ErrorKind.Digit, string, Context>,) {  return between(char("["), char("]"), sepBy(char(","), digitParser()));}
//#region using Immerfunction parseDigitWithImmer(): IParser<  Digit,  ErrorKind.Digit,  string,  Context> {  return (input: string, context: Context = parserContext) => {    const result = digit()(input, context);    if (!result.ok) {      return result;    }
    // We use Immer here to create an immutable parser context.    context = produce(result.context, (draft) => {      draft[result.output] += 1;    });
    return { ...result, context };  };}
export function contextedParserWithImmer() {  return parseDigitArray(parseDigitWithImmer);}//#endregion
//#region using unistore
// unistore is a state management library which similar to Redux// but more easy to use and simpler.
function parseDigitWithUnistore(): IParser<  Digit,  ErrorKind.Digit,  string,  Store<Context>> {  return (    input: string,    context: Store<Context> = createStore(parserContext),  ) => {    const result = digit()(input, context);    if (!result.ok) {      return result;    }
    const key = result.output;    context!.action((state) => ({ [key]: state[key] + 1 }))();
    return { ...result, context };  };}
export function contextedParserWithUnistore() {  return parseDigitArray(parseDigitWithUnistore);}
export function createUnistoreContext() {  return createStore(parserContext);}//#endregion