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JSON standard for documenting web component libraries for IDEs, documentation generators and other tools


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official JetBrains project


Welcome to Web-Types, a JSON format for documenting web component libraries.

Web-Types is a framework-agnostic format aimed at providing IDEs and other tools with the metadata information about the contents of a component library. Its powerful name patterns allow encoding information about web framework syntax or customizing code completion suggestions for large icon libraries in the IDEs that support Web-Types.

Version 2.0 of the format

Web-Types started as a format to support Vue libraries, but we've always wanted to provide a more generic solution. Finally, version 2.0 of Web-Types format works seamlessly for any kind of web framework, Web Components library, or CSS icons pack.

A detailed documentation of the format is available here

Starting with version 2021.3.1 of WebStorm (and other JetBrains IDEs), a full support for the new Web-Types format is supported (the new format has been partially supported since 2021.2). You can now add custom HTML elements and attributes, custom CSS classes, properties, functions, pseudo-classes, and pseudo-elements. Vue and Angular support integrates fully with the format, so you can easily mix Web Components in Angular or Vue templates.

Example Web-Types files are available in examples folder. Web-Types for Angular and Vue frameworks are available in the examples/references directory. They require dynamic contributions based on project source from IDE plugins to work properly.

A webinar recording with Piotr Tomiak explaining the new version of the format and how pattern processing works is available on YouTube.

The new version of Web-Types is backward compatible with the Vue-only Web-Types.

Local development with Web-Types

To enable your Web-Types file in the project, link it through the web-types property of your local project package.json file. You can specify multiple Web-Types files by providing an array of paths.


Library providers are welcome to include detailed Web-Types JSONs and link them through web-types property in package.json. E.g.:

  "web-types": "./web-types.json"

Many libraries are providing this feature, for instance:

In case a library is not shipping Web Types, they can be published under the @web-types scope on NPM. Currently, the following frameworks and libraries are supported in such a way:

  • Vue.js
    • quasar-framework
  • Web Components
    • lit

Published JSONs are checked into this repository under the packages folder. In case of Web-Types published to @web-types scope, IDEs are supposed to download required JSONs without any changes to the user project structure.

Various IDEs perform optimizations when scanning node_modules directory, so to ensure that web-types for your package are always available, make sure it's listed in packages/registry.json.


Web-Types JSON Schema is available in the schema folder. Use one of the following URLs to reference it in your JSON files:


Generating Web-Types

From source

Currently, the following component documentation formats are supported:

  • JSDoc using styleguidist vue-docgen-api library - add vue-docgen-web-types package to your project and run the vue-docgen-web-types command. You can launch it in a watch mode by passing --watch and you can pass a custom configuration file via --configFile parameter. See config.d.ts for detailed information on supported configuration file options.

If you're not using JSDoc in your project, you can create your own builder for web-types JSON. For examples see vuetify, quasar or bootstrap-vue pull requests from above.

Publishing to @web-types scope

We welcome your PRs with Web-Types for libraries in packages folder. There should be a single file per library in the format:


We are syncing contents of the packages folder using script/ script which usage syntax is following: <package-name> [--dry-run]

The script scans folder packages/<package-name> for provided Web-Types jsons and synchronizes contents with NPM.

Versioning and naming of @web-types scope

Versioning and naming rules are as follows:

  • Web-Types for package pkg-name are available under @web-types/pkg-name
  • Web-Types for package @scope/pkg-name are available under @web-types/at-scope-pkg-name
  • Web-Types for version 1.2.3 are published as prerelease 1.2.3-n, e.g. 1.2.3-3
  • Web-Types for pre-release version 1.2.3-rc.1 are published with additional segment, e.g. 1.2.3-rc.1.3
  • to search for appropriate Web-Types package use range <pkg-ver and include prerelease versions, e.g. to find Web-Types for version 1.2.6, query package list with <1.2.6, which can match Web-Types in version 1.2.4-12
  • all outdated versions are marked as deprecated and should be ignored by an IDE


All contributions are welcome! We need your help to improve the Web-Types format specification, to support other frameworks and to improve quality of generated metadata through scripts.


JSON standard for documenting web component libraries for IDEs, documentation generators and other tools



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