yogurt1

class AutoSaveJSON {
    constructor(path) {
        this.data = require(path);
    }

    save() {
        fs.writeFile(path, JSON.stringify(this.data), err => console.dir(err, {colors: true})
    }

    set(key, value) {
        this.data[key] = value;
        this.save()
    }

    get(key) {
        return this.data[key]
    }
}

const json = new AutoSaveJSON('./some_data.json')
json.set('key', 'value')
json.get('key') === 'value'