Brand checking of React Elements.

Stringify any JavaScript value.

babel's modular runtime helpers

Runtime for Regenerator-compiled generator and async functions.

Standard library

A library for deep (recursive) merging of Javascript objects

Runtime type checking for React props and similar objects.

Cooperative scheduler for the browser environment.

React is a JavaScript library for building user interfaces.

React package for working with the DOM.

Copies non-react specific statics from a child component to a parent component

emotion's memoize utility

invariant

An object of css properties that don't accept values with units

A function to check whether a prop is valid for HTML and SVG elements

A MurmurHash2 implementation

internal utils for emotion

serialization utils for emotion

emotion's cache

Core Storybook Components

Declarative routing for React

emotion's stylesheet

Fastest deep equal comparison for React. Great for React.memo & shouldComponentUpdate. Also really fast general-purpose deep comparison.

A Light–weight CSS Preprocessor

A lightweight toolset for writing styles in Javascript.

styled API for emotion

> Simple styling in React.

The lodash method `_.kebabCase` exported as a module.

React context for MDX

Utility functions for React components.

Tiny 200b functional Event Emitter / pubsub.

Create components whose prop changes map to a global side effect

A document head manager for React

Responsive, theme-based style props for building design systems with React

Styled System for the `css` prop

Read the docs: https://styled-system.com/variants

React code splitting made easy.

Polyfills for legacy browsers

Gatsby library that helps creating pages

Blazing fast modern site generator for React

An enhanced Link component for Gatsby sites with support for resource prefetching

React Router scroll management forked from https://github.com/ytase/react-router-scroll for Gatsby

Stand alone shallowCompare for use in libraries that support shouldComponentUpdate

Gatsby's fork to modernize reach-router

Relocate resource intensive third-party scripts off of the main thread and into a web worker.

Gatsby plugin which adds a manifest.webmanifest to make sites progressive web apps

An enhanced script component for Gatsby sites with support for various loading strategies

Utility for filtering Styled System props with Emotion's shouldForwardProp option

[](https://bundlephobia.com/package/@theme-ui/css)

Primitive layout, typographic, and other components for use with Theme UI.

[](https://bundlephobia.com/package/@theme-ui/core)

Adds support for user-controlled color modes

**Note:** This package is a hack to fix export order produced by microbundle. Use the main `theme-ui` package or `@theme-ui/core` instead.

[MDX](https://mdxjs.com) utilities for [Theme UI](https://theme-ui.com)

Intercepts local links from markdown and other non-react pages and does a client-side pushState to avoid the browser having to refresh the page.

MDX integration for Gatsby

Processes images in markdown so they can be used in the production build.

Internal package — You don't want to consume this directly.