Flat-file database in Node

database.js

let fs = require('fs')
let path = require('path')

class FlatFileDatabase {
  constructor (root) {
    this.root = root
  }

  get (collectionName, key) {
    let file = path.join(this.root, collectionName, key + '.json')
    return JSON.parse(fs.readFileSync(file))
  }

  save (collectionName, key, data) {
    let file = path.join(this.root, collectionName, key + '.json')
    return fs.writeFileSync(file, JSON.stringify(data))
  }
}