TypeScript の環境

$ node --version
v18.6.0
 
$ npm --version
8.19.2

{
  "name": "atcoder",
  "version": "1.0.0",
  "main": "index.js",
  "scripts": {},
  "keywords": [],
  "author": "",
  "license": "ISC",
  "description": "",
  "devDependencies": {
    "@types/node": "^18.15.11",
    "ts-node": "^10.9.1",
    "typescript": "^5.0.4",
    "@types/tstl": "^1.5.7"
  },
  "dependencies": {
    "tstl": "^2.5.13"
  }
}

import * as fs from "fs";
 
const chars = [..."abcdefghijklmnopqrstuvwxyz"];
 
class Reader {
  readonly input: string[];
  private index: number = 0;
 
  constructor() {
    this.input = fs.readFileSync("/dev/stdin", "utf8").trim().split("\n");
  }
 
  rl(): string {
    return this.input[this.index++];
  }
 
  rn(): number {
    return Number(this.input[this.index++]);
  }
 
  rb(): bigint {
    return BigInt(this.input[this.index++]);
  }
 
  rln(): number[] {
    const line = this.input[this.index++].split(" ");
    return line.map(Number);
  }
 
  rlb(): bigint[] {
    const line = this.input[this.index++].split(" ");
    return line.map(BigInt);
  }
 
  rls(): string[] {
    return this.input[this.index++].split(" ");
  }
}
 
const main = () => {
  const r: Reader = new Reader();
 
  // console.log(ans);
};
 
main();