reactive-json-file

Sync JSON mutations to disk using reactive magic!

Great for removing saving-to-disk concerns when updating a JSON object.

import { openJson } from 'reactive-json-file'

// Open a JSON file
const object = openJson('./data.json')

// No need to save changes to disk, just update the object
object.name = 'John Doe'

🚀 Install

npm i reactive-json-file

⚙️ API

openJson(filePath, options)

Open a file (eg. JSON file) and return the object

Options

• throttle <Number> - Milliseconds to throttle saves by. Saves are already batched at the end of every event-loop, but this adds time-based throttling.

• fs <FileSystemInterface> (fs) - Pass in a custom file-system. Defaults to native Node.js fs

• serialize/deserialize <Function> - Functions to serialize/deserialize the object with. eg. to save output to YAML

  import { openJson as openYaml } from 'reactive-json-file'
  import yaml from 'js-yaml'
  
  const object = openYaml('./file.yaml', {
      serialize: data => yaml.dump(data),
      deserialize: string => yaml.load(string)
  })
  
  object.message = 'YAML!'

closeJson(object)

Close a file to disable syncing

🙋‍♀️ FAQ

How does it work?

Arbitrary new changes are detected by using ES6 Proxy behind the scenes.