Build React App Using Grommet Ui

Why Choose Grommet for Your React Application

Grommet is a React-based UI component library that provides a comprehensive set of accessible, responsive, and themeable components for building modern web applications. Originally developed by Hewlett Packard Enterprise as their internal design system, Grommet has evolved into a powerful open-source toolkit trusted by enterprises worldwide for creating consistent, user-friendly interfaces.

The library stands out among React UI frameworks for several compelling reasons. First, accessibility is built into every component from the ground up, ensuring your applications are usable by people with diverse abilities. Second, Grommet provides extensive theming capabilities that allow you to customize the look and feel to match your brand identity precisely. Third, the component library is comprehensive, covering everything from basic layout elements to complex data visualization tools.

Enterprise-Grade Reliability

Grommet's origins as Hewlett Packard Enterprise's internal design system speak volumes about its reliability and scalability. The library has been battle-tested in large-scale enterprise environments where consistency, performance, and accessibility are non-negotiable requirements. When building enterprise applications, having a component library you can trust is essential for long-term maintainability and team productivity.

Accessibility First Architecture

Every component in Grommet is designed with accessibility considerations baked in from the start, following WAI-ARIA guidelines and implementing proper keyboard navigation, screen reader support, and color contrast requirements. This means you do not need to be an accessibility expert to build applications that meet basic accessibility standards--Grommet handles the complexity for you. For teams focused on inclusive design, this built-in accessibility significantly reduces development time and compliance effort.

Comprehensive Component Library

Grommet offers an extensive collection of components that cover the full spectrum of UI development needs. The library includes layout components like Box, Flex, and Grid for structuring your application; navigation components for building intuitive user flows; form inputs for collecting user data; and display components for presenting information effectively. This comprehensive approach means you can often complete entire projects using only Grommet components, reducing integration complexity with our /services/web-development/ expertise.

Setting Up Your Development Environment

Prerequisites

Before installing Grommet, ensure you have Node.js installed (current LTS version recommended) along with npm or Yarn as your package manager. Create React App 5.0+ or modern frameworks like Next.js and Vite work well with Grommet. Setting up your development environment properly is the foundation for productive React development.

Installation

Install Grommet and its dependencies using npm or Yarn:

npm install grommet grommet-icons styled-components
# or
yarn add grommet grommet-icons styled-components

The core grommet package includes essential components. The grommet-icons package provides SVG icons that integrate seamlessly, and styled-components enables custom extensions when needed for advanced styling requirements.

Project Clean-Up

Create React App generates files that can be removed for Grommet projects:

npx create-react-app my-grommet-app
cd my-grommet-app
# Delete: App.css, App.test.js, index.css, logo.svg

After removing files, update import statements in index.js and App.js to remove references to deleted files. This clean foundation provides a clear starting point for building your Grommet-based application.

For teams adopting modern JavaScript tooling, consider integrating Grommet with a comprehensive /services/web-development/ workflow that includes optimized build processes and testing automation.

Your First Grommet Component

The Grommet Provider

Every Grommet application must wrap its content in the Grommet component, providing the theme context that all Grommet components use. This provider pattern ensures consistent theming throughout your application and is the foundation for using Grommet effectively:

import React from 'react';
import { Grommet, Heading, Box, Text } from 'grommet';

function App() {
 return (
 <Grommet>
 <Box pad="medium">
 <Heading level={1}>Welcome to Grommet!</Heading>
 <Text>Build accessible, beautiful interfaces.</Text>
 </Box>
 </Grommet>
 );
}

export default App;

Understanding Component Props

Grommet components accept props controlling appearance and behavior. The Heading component supports size, color, level, and weight for customizing typography. The props follow consistent naming across components, making the API predictable and easy to learn:

<Heading
 size="large"
 color="#00739D"
 level={1}
>
 I have Mastered Grommet!
</Heading>

These props work consistently across all Grommet components, reducing the learning curve as you explore more components in the library. For developers building more complex applications, understanding these foundational patterns is essential before moving to advanced theming and customization.

Essential Grommet Components for Layout

Box: The Foundation of Layouts

Box is the most fundamental layout component, serving as a versatile container with props for padding, margins, background, borders, and flexbox behavior. Think of Box as Grommet's equivalent of a div element, but with powerful styling capabilities built in:

<Box
 direction="row"
 justify="between"
 align="center"
 pad="medium"
 gap="small"
 wrap
>
 <Button label="Cancel" />
 <Button label="Submit" primary />
</Box>

Grid: Two-Dimensional Layouts

Grid provides powerful CSS grid implementation for layouts requiring both rows and columns. This component is ideal for creating dashboard layouts, gallery views, and any interface where you need precise control over both dimensions:

<Grid
 areas={[
 { name: 'header', start: [0, 0], end: [2, 0] },
 { name: 'nav', start: [0, 1], end: [0, 2] },
 { name: 'main', start: [1, 1], end: [1, 2] },
 ]}
 columns={['small', 'medium', 'small']}
 rows={['small', 'medium']}
 gap="small"
>
 <Box gridArea="header" background="brand">Header</Box>
 <Box gridArea="nav">Navigation</Box>
 <Box gridArea="main">Content</Box>
</Grid>

Stack: Layered Content

Stack layers components on top of each other for overlays, badges, or text-on-image patterns. This component is perfect for creating cards with overlaid text or any scenario where one element needs positioning on top of another.

For UI design best practices when building these layouts, refer to our comprehensive guide on Comprehensive Guide to UI Design.

Form Components and User Input

TextInput and FormField

Grommet provides comprehensive form components. FormField wraps inputs to provide labels, validation messages, and consistent styling. Together, these components create accessible, user-friendly form experiences following best practices for React forms:

import { useState } from 'react';
import { FormField, TextInput, Button, Box } from 'grommet';

function LoginForm() {
 const [email, setEmail] = useState('');

 return (
 <Box pad="medium" width="medium">
 <FormField label="Email" error={!email.includes('@') ? 'Invalid email' : undefined}>
 <TextInput
 value={email}
 onChange={(event) => setEmail(event.target.value)}
 placeholder="Enter your email"
 type="email"
 />
 </FormField>
 <FormField label="Password">
 <TextInput type="password" placeholder="Enter your password" />
 </FormField>
 <Box pad={{ vertical: 'medium' }}>
 <Button label="Sign In" primary />
 </Box>
 </Box>
 );
}

Select, CheckBox, and More

Specialized input components include Select for dropdown menus, CheckBox for boolean values, RadioButton for mutually exclusive options, and TextArea for multi-line text input. Each component follows consistent patterns for value binding, change handling, and accessibility support.

Building accessible, well-designed forms is a critical skill for any web developer. Our /services/web-development/ team can help you implement form best practices across your React applications.

Theming and Customization

Understanding Grommet Themes

Grommet's theming system provides extensive control over visual appearance through design tokens. The default theme provides sensible defaults, but you can extend or override any token to match your brand identity:

const customTheme = {
 global: {
 colors: {
 brand: '#625afa',
 'brand-light': '#8b8dff',
 'brand-dark': '#454399',
 },
 font: {
 family: 'Inter, sans-serif',
 size: '16px',
 },
 },
};

function App() {
 return <Grommet theme={customTheme}>{/* content */}</Grommet>;
}

Extending Components

Use the extend prop to add custom CSS beyond Grommet's props. This capability is particularly useful when you need custom styling that goes beyond what Grommet's props provide:

<Button
 label="Custom Button"
 color="brand"
 extend={(theme) => ({
 borderRadius: theme.global.edgeSize.small,
 boxShadow: '0 4px 6px rgba(0, 0, 0, 0.1)',
 })}
/>

This pattern keeps custom styling co-located with the component, improving maintainability and making it clear what customizations have been applied. For organizations seeking cohesive brand experiences, implementing a well-structured theming strategy is essential for maintaining visual consistency across applications.

Responsive Design with Grommet

Breakpoints and Responsive Props

Grommet includes predefined breakpoints that adapt interfaces to different screen sizes. Components accept responsive prop values that change based on the current breakpoint:

<Box
 direction={{ mobile: 'column', tablet: 'row', desktop: 'row' }}
 pad={{ mobile: 'small', tablet: 'medium', desktop: 'large' }}
 gap={{ mobile: 'small', desktop: 'medium' }}
>
 <Text>Adapts to screen size</Text>
</Box>

ResponsiveContext

For complex responsive behaviors, use ResponsiveContext for custom logic. This enables components to make decisions based on screen size beyond simple prop changes:

import { ResponsiveContext } from 'grommet';

function ResponsiveComponent() {
 const size = useContext(ResponsiveContext);
 return <Text>Current breakpoint: {size}</Text>;
}

This pattern is useful for conditionally rendering different components or applying custom styling logic based on screen size. Implementing responsive design effectively is crucial for modern web applications, and our expertise in /services/web-development/ ensures your applications perform beautifully across all devices.

Resources for Further Learning

• Grommet Components Documentation - Complete reference for all components and their APIs
• Grommet GitHub Repository - Examples, issue trackers, and contribution guidelines
• HPE Design System - Official design system documentation and guidance
• Grommet Slack Community - Get help and connect with developers

Related Resources

• Comprehensive Guide to UI Design - Learn UI design principles
• Nine Principles of Design Implementation - Design principles for developers
• Building With Gulp - Modern build tooling for React applications

Sources

1. LogRocket: Build a React app using Grommet for the UI - Comprehensive tutorial covering installation, component usage, theming, and real-world examples
2. HPE Developer: Using Your First Grommet Component with Create-React-App - Step-by-step guide from HPE's official documentation
3. Grommet GitHub Repository - Official repository with component documentation and examples
4. Grommet v2 Components Documentation - Complete reference for all available components
5. HPE Design System: Developer Guidance - Official design system documentation