import { readFile, writeFile } from "fs";

export async function asyncLoadJSON<T>(filename: string): Promise<T> {
  return new Promise((resolve, reject) => {
    readFile(filename, "utf8", (err, data) => {
      if (err) {
        return reject(err);
      }
      resolve(JSON.parse(data));
    });
  });
}

export async function asyncSaveJSON(
  filename: string,
  data: any
): Promise<void> {
  return new Promise((resolve, reject) => {
    writeFile(filename, JSON.stringify(data), {}, err => {
      if (err) {
        return reject(err);
      }
      resolve();
    });
  });
}