https://github.com/kettek/unreson

JavaScript module & class for providing deep undo/redo state for dynamic JSON objects
https://github.com/kettek/unreson

json nodejs object redo state undo

Last synced: 3 months ago
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JavaScript module & class for providing deep undo/redo state for dynamic JSON objects

• Host: GitHub
• URL: https://github.com/kettek/unreson
• Owner: kettek
• License: mpl-2.0
• Created: 2019-08-08T07:09:28.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2023-01-04T06:36:10.000Z (over 2 years ago)
• Last Synced: 2025-02-07T18:40:22.694Z (4 months ago)
• Topics: json, nodejs, object, redo, state, undo
• Language: JavaScript
• Size: 252 KB
• Stars: 1
• Watchers: 4
• Forks: 0
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

        
# unreson -- undo/redo-able object wrapper

`unreson` provides the `StateObject` class that manages the state for a provided JSON-safe object. Changes to the object, no matter how deep, may be undone or redone. The state of the object can also be made temporarily immutable if the need arises.

## Usage

    let unreson = require('unreson')

    let myObject = new unreson.StateObject({ a: 0, b: 1, c: {}, d: [0,1,2,3,4] })

    console.log(myObject.state) // { a: 0, b: 1, c: {}, d: [ 0, 1, 2, 3, 4 ] }

    myObject.state.c = 2

    console.log(myObject.state) // { a: 0, b: 1, c: 2, d: [ 0, 1, 2, 3, 4 ] }

    myObject.undo()

    console.log(myObject.state) // { a: 0, b: 1, c: {}, d: [ 0, 1, 2, 3, 4 ] }

    myObject.redo()

    console.log(myObject.state) // { a: 0, b: 1, c: 2, d: [ 0, 1, 2, 3, 4 ] }

    myObject.freeze()

    console.log(myObject.frozen) // true

    myObject.state.c = 3

    myObject.thaw()

    console.log(myObject.frozen) // false

    console.log(myObject.state) // { a: 0, b: 1, c: 2, d: [ 0, 1, 2, 3, 4 ] }