https://github.com/omgaz/diffler

A recursive JSON comparison script for humans
https://github.com/omgaz/diffler

compare hacktoberfest javascript jsdiff json json-objects

Last synced: 16 days ago
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A recursive JSON comparison script for humans

• Host: GitHub
• URL: https://github.com/omgaz/diffler
• Owner: omgaz
• License: mit
• Created: 2012-05-10T10:10:15.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2023-07-18T21:57:06.000Z (over 1 year ago)
• Last Synced: 2024-09-20T12:18:01.050Z (about 2 months ago)
• Topics: compare, hacktoberfest, javascript, jsdiff, json, json-objects
• Language: JavaScript
• Homepage:
• Size: 341 KB
• Stars: 18
• Watchers: 2
• Forks: 1
• Open Issues: 6
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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diffler

  


    A recursive JSON comparison script for humans

  

  


  




## Motivation

To compare JSON objects containing asset metadata for a digital library. Upon change of any metadata, we'd store these changes as an audit trail and email asset stakeholders for review and approval of the changes.

## Dependencies

diffler is written with Node v12 in mind.

Tests depend on [Mocha](https://mochajs.org/).

## Usage

[![npm version](https://badge.fury.io/js/diffler.png)](https://www.npmjs.com/package/diffler)

```bash

npm install diffler

```

### Params

`obj1` and `obj2` are two JSON objects for comparison.

### Return

If same: returns `{}` _(empty object)_

If different: A JSON object with preserved path structure. The resulting values will be an object with `from` and `to` fields.

### Example

```js

const diffler = require("diffler");

const before = { name: "omgaz", location: "London" };

const after = { name: "omgaz", location: "Melbourne" };

const difference = diffler(before, after);

console.log(difference); // { location: { from: "London", to: "Melbourne" } }

```

## Tests

[![Build Status](https://travis-ci.org/omgaz/diffler.svg?branch=master)](https://travis-ci.org/omgaz/diffler)

If you'd like to run tests, check out the whole project. You'll need NodeJS installed. Tests use Mocha.

```bash

  npm install

  npm test

```