https://github.com/andrewdavey/immutable-devtools

Chrome Dev Tools custom formatter for Immutable-js values
https://github.com/andrewdavey/immutable-devtools

Last synced: 3 months ago
JSON representation

Chrome Dev Tools custom formatter for Immutable-js values

• Host: GitHub
• URL: https://github.com/andrewdavey/immutable-devtools
• Owner: andrewdavey
• License: bsd-3-clause
• Created: 2015-11-13T22:56:15.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2019-11-11T19:46:04.000Z (almost 5 years ago)
• Last Synced: 2024-07-28T17:44:17.452Z (3 months ago)
• Language: JavaScript
• Size: 181 KB
• Stars: 661
• Watchers: 12
• Forks: 29
• Open Issues: 8
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-chrome-devtools - immutable-devtools - Custom formatter for Immutable-js values. (DevTools tooling and ecosystem / Object formatting)

README

        
# Chrome Dev Tools for Immutable-js

[![Npm Version](https://badge.fury.io/js/immutable-devtools.svg)](https://badge.fury.io/js/immutable-devtools)

[![NPM downloads](http://img.shields.io/npm/dm/immutable-devtools.svg)](https://www.npmjs.com/package/immutable-devtools)

[![devDependency Status](https://david-dm.org/andrewdavey/immutable-devtools/dev-status.svg)](https://david-dm.org/andrewdavey/immutable-devtools#info=devDependencies)

The [Immutable](http://facebook.github.io/immutable-js/) library is fantastic, but inspecting immutable collections in Chrome's Dev Tools is awkward. You only see the internal data structure, not the logical contents. For example, when inspecting the contents of an Immutable List, you'd really like to see the items in the list.

Chrome (v47+) has support for custom "formatters". A formatter tells Chrome's Dev Tools how to display values in the Console, Scope list, etc. This means we can display Lists, Maps and other collections, in a much better way.

Essentially, it turns this:

![Before](before.png)

into:

![After](after.png)

This library provides a formatter to do just that.

## Features

The library currently has formatters for:

 - [x] `List`

 - [x] `Map` & `OrderedMap`

 - [x] `Set` & `OrderedSet`

 - [x] `Stack`

 - [ ] `Range` (let me know if you use this :-), add :+1: to [#21](https://github.com/andrewdavey/immutable-devtools/issues/21))

 - [ ] `Repeat` (if you wish this, add :+1: to [#22](https://github.com/andrewdavey/immutable-devtools/issues/22))

 - [x] `Record`

 - [ ] `Seq` — I do not have an idea how to display it. If you know, [write it down into #23](https://github.com/andrewdavey/immutable-devtools/issues/23)

Want something more? [Write down your wishes!](https://github.com/andrewdavey/immutable-devtools/issues/new)

## Installation

Chrome v47+

In Dev Tools, press F1 to load the Settings. Scroll down to the Console section and tick "Enable custom formatters".

Then, in your project, install via npm:

```

npm install --save-dev immutable-devtools

```

And enable with:

```js

var Immutable = require("immutable");

var installDevTools = require("immutable-devtools");

installDevTools(Immutable);

```

Note: You probably only want this library for debug builds, so perhaps wrap with `if (DEBUG) {...}` or similar.

## Chrome Extension

Matt  Zeunert created a [Chrome Extension](https://github.com/mattzeunert/immutable-object-formatter-extension) based on this project. It automatically installs the formatters when you open the DevTools. ([Install from Chrome Web Store](https://chrome.google.com/webstore/detail/immutablejs-object-format/hgldghadipiblonfkkicmgcbbijnpeog)).

## Using with webpack

You could use `webpack.DefinePlugin` to create a condition that will be allowed to install `immutable-devtools` in the debug build but unreachable in the production build:

```javascript

// webpack.config.js

var webpack = require('webpack');

module.exports = {

  // ...

  plugins: [

    new webpack.DefinePlugin({

      __DEV__: JSON.stringify(process.env.NODE_ENV !== 'production')

    })

  ],

};

```

In your source you'd have something like this...

```javascript

// index.js

var immutable = require('immutable');

if (__DEV__) {

  var installDevTools = require('immutable-devtools');

  installDevTools(immutable);

}

```

And then by adding the `-p` shortcut to webpack for production mode which enables dead code elimination, the condition that requires immutable-devtools will be removed.

```

NODE_ENV=production webpack -p index.js

```

See [#16](https://github.com/andrewdavey/immutable-devtools/issues/16) for more info.