React CSS modules

VS Code extension that enables CSS modules IntelliSense for your React projects written in TypeScript/JavaScript. Currently supports CSS, SCSS, Less modules

This extension also supports CSS language features which are not supported by built-in VS Code code CSS language features. Check CSS language features for more info

Capabilities

This extension is unique in terms of support for major types of Casings and different types of CSS class selectors

Different types of selectors are supported

• Root selectors
• Nested selectors
• Suffixed selectors (SCSS only)
• Deeply nested suffix selectors
• Pseudo Classes
• Pseudo Class functions

Almost all project scaffolders such as Vite, Next.js and CRA add css module declaration to the project by injecting it in a .d.ts file (for instance inside node_modules/vite/client.d.ts added by Vite). TypeScript treats these definitions as definition provider for Style properties. This results in a useless definition result when VS Code Go to Definition is triggered. Check this issue.

This extension gives you an option to eliminate the useless results by using the TypeScript plugin typescript-cleanup-defs that can filter out those definitions results. Check the plugin for more details.

Override this plugin using the setting reactTsScss.tsCleanUpDefs

See how it compares with CSS modules

Features	React CSS Modules	CSS modules
Definition	Camel Case selectors - ✅ Snake Case selectors - ✅ Pascal Case selectors - ✅ Kebab Case selectors - ✅	Camel Case selectors - ✅ Snake Case selectors - ❌ Pascal Case selectors - ❌ Kebab Case selectors - ❌
Completion	Camel Case selectors - ✅ Snake Case selectors - ✅ Pascal Case selectors - ✅ Kebab Case selectors - ✅	Camel Case selector - ✅ Snake Case selectors - ✅ Pascal Case selectors - ✅ Kebab Case selectors - ✅
Hover	Supported for all types of selectors - ✅	❌
SCSS Suffix Selectors	✅	❌
Psuedo Classes	✅	✅
Psuedo Class Functions	✅	✅
Less suffix selectors	✅	❌
Selector Diagnostics	✅	❌
Selector References	✅	❌
Code lenses	✅	❌
Rename selector	✅	❌
Mixin Selector	✅	❌
Mixin Reference selectors	✅	❌
Code actions	✅	❌
CSS Definitions	✅	❌
CSS Variables Completions	✅	❌
CSS Color Presentation	✅	❌

Langauge Features

• TS/TSX|JS/JSX Language Features
  • Definitions
  • Hover
  • Completions
  • Diagnostics
  • Code Actions
• CSS/SCSS/Less Language Features
  • Rename Provider
  • Reference Provider
  • Code Lens (Default OFF)
  • Variable Completion - [Only CSS]
  • Variable Definitions - [Only CSS]
  • Syntax Colors and Presentation - [Only CSS]
• Casings
• Settings
• Roadmap
• Contribution

TS/TSX|JS/JSX Language Features

Definitions

• Go to any type of selector definition from your React components - demo
  • reactTsScss.definition - setting for this feature

Hover

• Peek CSS properties of a selector on hover - demo
  • reactTsScss.peekProperties - setting for this feature

Completions

• Completion of selectors - demo
• Completion of style identifiers with automatic import of closest (S)CSS module - demo
  • reactTsScss.autoComplete - setting for this feature

Diagnostics

• Useful diagnostics information are provided for missing selector - demo
• Module not found error is also provided for non existing CSS modules - demo
• Hints for un used selectors inside CSS/SCSS documents - demo
• Settings to change diagnostics
  • reactTsScss.diagnostics - Toggle to turn off diagnostics
  • reactTsScss.tsconfig - Base TS Config path in the project. Useful for resolving path aliases. Defaults to './tsconfig.json'
  • reactTsScss.baseDir - Root directory of your project. Useful if tsconfig doesn't have information about path aliases. Defaults to 'src'

Code Actions

• Code Action to quick fix misspelled selectors
• Code Action to add a non existing selector to the corresponding CSS/SCSS module
• Code Action to ignore warnings temporarily
• demo
  • reactTsScss.diagnostics - setting for this feature

CSS/SCSS/Less Language Features

Rename Provider

• Rename all the references of a selector across various component files - Demo

• Currently rename only work for the modules that are imported in tsx/jsx files

  • reactTsScss.renameSelector - setting for this feature

Reference Provider

• Find all the references of a selector across various component files - Demo

• Currently references only work for the modules that are imported in tsx/jsx files

  • reactTsScss.references - setting for this feature

Code Lens

• Useful Code Lens context for selectors based on their references across component files - Demo
• A quick alternative to reactTsScss.references
• Currently lenses only work for the modules that are imported in tsx/jsx files
  • reactTsScss.codelens - setting for this feature
  • This setting is OFF by default

Variable Completion - [Only CSS]

Demo

• Completion of variables across all the css modules
  • reactTsScss.cssAutoComplete - setting for this feature

Variable Definitions - [Only CSS]

• Definition of variables across all the css modules
  • reactTsScss.cssDefinitions - setting for this feature

Syntax Colors and Presentation - [Only CSS]

• Color Presentations and color information for variables across all the css modules
  • reactTsScss.cssSyntaxColor - setting for this feature

    VS codes built in support for CSS Language is limited to the current active file.So the above features are limited to active file and hence any access to variables from different modules won't work until you install React CSS modules

Casings

This extensions supports selectors written in:

1. snake_case
2. PascalCase
3. camelCase
4. kebab-case

Settings

Defaults

{
  "reactTsScss.peekProperties": true,
  "reactTsScss.autoComplete": true,
  "reactTsScss.autoImport": true,
  "reactTsScss.definition": true,
  "reactTsScss.references": true,
  "reactTsScss.tsconfig": "./tsconfig.json",
  "reactTsScss.baseDir": "src",
  "reactTsScss.diagnostics": true,
  "reactTsScss.cssAutoComplete": true,
  "reactTsScss.cssDefinitions": true,
  "reactTsScss.cssSyntaxColor": true,
  "reactTsScss.tsCleanUpDefs": true,
  "reactTsScss.cleanUpDefs": [
    "*.module.css",
    "*.module.scss",
    "*.module.sass",
    "*.module.less",
    "*.module.styl"
  ],
  "reactTsScss.codelens": false,
  "reactTsScss.renameSelector": true
}

Roadmap

1. Plain selectors without any reference is a no op in the current version and is expected to be added in coming versions
2. Support for stylus will be added in the future versions

Contribution

Check out the contribution guide