o2diff

Compares two objects and returns the differences between them if different formats: changed values, changed paths, differences.

Works in Node.js and in the browser.

Demo

Features

• Provides three outputs:
  • diff: { left, right } the object differences.
  • values: { changed, added, deleted }, the changed values.
  • paths: { changed, added, deleted }, the changed paths.
• Revert function, to revert the destination object to the source object.

Install

$ pnpm i o2diff

Usage

const o2diff = require('o2diff')

const original = {
  firstName: 'John',
  lastName: 'Smith',
  email: 'john@mail.com',
  phones: [
    { type: 'home', value: '+12222' },
    { type: 'mobile', value: '+11111' }
  ]
}
const current = {
  firstName: 'Michael',
  age: 25,
  email: 'michael@mail.com',
  phones: [
    { type: 'work', value: '+13333' },
    { type: 'mobile', value: '+11111' }
  ],
  address: {
    city: 'New York',
    location: {
      latitude: 40.730610,
      longitude: -73.935242
    }
  }
}

o2diff.diff(original, current)       // returns { left, right } with objects diff
o2diff.diffValues(original, current) // returns { changed, added, deleted } with values diff
o2diff.diffPaths(original, current)  // returns { changed, added, deleted } with paths diff

API

diff(original, current)

Returns the differences between original and current.

• original - the original object.
• current - the current (actual) object.
• returns { left, right } object.

diffValues(original, current)

Returns the added, changed and deleted values between original and current.

• original - the original object.
• current - the current (actual) object.
• returns { changed, added, deleted } object.

diffPaths(original, current)

Returns the added, changed and deleted paths between original and current.

• original - the original object.
• current - the current (actual) object.
• returns { changed, added, deleted } object.

revert(dest, src, customizer)

Reverts dest object to src, calls customizer for each dest.path.

• dest - the destination object.
• src - the source object.
• customizer - the function that is called for each dest.path.

getPaths(obj)

Returns all the paths of the object.

• obj - the object.

omitPaths(obj, excludedPaths)

Returns the object without excludedPaths.

• obj - the object.
• excludedPaths - the array of paths to exclude. The path can be with mask: *.name or name.* to exclude only path started or ended with the name.

License

Licensed under the MIT license.

Author

Alexander Mac