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import { args } from "deno";import { ArgParsingOptions, parse } from "https://deno.land/x/flags/mod.ts";
export default class ArgParser {  public parsed = null;  public positional: string[] = [];  constructor(public parseOpts: ArgParsingOptions) {    this.parsed = new Map(Object.entries(parse(args.slice(1), parseOpts)));    this.positional = this.parsed.get("_").map(String);  }
  public getOpt<T>(name: string, defVal?: T): T {    return this.parsed.has(name) ? this.parsed.get(name) : defVal;  }
  public getArg<T>(position: number, defVal?: string): string {    if (position < 0) {      throw new TypeError("Argument number must be positive.");    }    if (position < this.positional.length) {      return this.positional[position];    }    return defVal;  }}