lib/persist.js


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import fs from "fs";

export default (path, initial = {}) => {
  if (!initial || !Object.keys(initial).length) {
    try {
      initial = JSON.parse(fs.readFileSync("/app/" + path));
    } catch (e) {
      console.log(e);
    }
  }

  return new Proxy(initial, {
    set(obj, prop, value) {
      fs.writeFileSync(
        path,
        JSON.stringify({ ...obj, [prop]: value }, null, 2),
        "utf-8"
      );
      return Reflect.set(...arguments);
    }
  });
};