The jasonic tool is a Node.js utility that allows you to synchronize specific fields between two JSON files. This tool was born out of a personal need, I had never worked with Nodejs so it is a bit experimental, it may have bad practices or things that can be improved. If someone wants to contribute, welcome.

npm install jasonic

const { syncJson } = require('jasonic');

The syncJson function takes the following parameters:

• sourcePath (string): Path to the source JSON file.
• targetPath (string): Path to the target JSON file.
• fields (array): List of fields to be synchronized.
• options (object, optional): Additional options for synchronization.

• transform (function): Transformation function applied to each field before synchronizing.
• log (boolean): Enable or disable operation logs. Enabled by default.
• overwrite (boolean): Allow or disallow overwriting existing fields in the target. Enabled by default.

const { syncJson } = require('jasonic');

const sourcePath = 'path/to/source.json';
const targetPath = 'path/to/target.json';
const fields = ['name', 'version', 'description'];

const options = {
  transform: (key, value) => value.toUpperCase(),
  log: true,
  overwrite: true,
};

syncJson(sourcePath, targetPath, fields, options);

npm install -g jasonic

jasonic source.json target.json --fields name version description

{
  "scripts": {
    "sync-json": "jasonic source.json target.json --fields name version description"
  }
}

npm run sync-json

npm test

This tool is licensed under the MIT License.