@fluentui/react-utilities

What is @fluentui/react-utilities?

@fluentui/react-utilities is a utility library for React that provides a set of helper functions and hooks to simplify common tasks when building Fluent UI components. It includes utilities for handling accessibility, styling, and other common React patterns.

What are @fluentui/react-utilities's main functionalities?

Accessibility Utilities

The `useId` hook generates a unique ID that can be used for accessibility purposes, such as associating labels with form elements.

import { useId } from '@fluentui/react-utilities';

function AccessibleComponent() {
  const id = useId('example');
  return <div id={id}>Accessible Content</div>;
}

Styling Utilities

The `mergeClasses` function allows you to combine multiple class names into a single string, which is useful for applying multiple styles to a component.

import { mergeClasses } from '@fluentui/react-utilities';

const className = mergeClasses('class1', 'class2');

function StyledComponent() {
  return <div className={className}>Styled Content</div>;
}

Event Handling Utilities

The `useEventCallback` hook creates a stable callback function that can be used in event handlers, ensuring that the function reference does not change between renders.

import { useEventCallback } from '@fluentui/react-utilities';

function EventComponent() {
  const handleClick = useEventCallback((event) => {
    console.log('Button clicked', event);
  });
  return <button onClick={handleClick}>Click Me</button>;
}

Other packages similar to @fluentui/react-utilities

classnames

The `classnames` package provides a simple utility for conditionally joining class names together. It is similar to the `mergeClasses` function in @fluentui/react-utilities but focuses solely on class name manipulation.

react-aria

The `react-aria` package provides a collection of React hooks for building accessible components. It offers more comprehensive accessibility utilities compared to @fluentui/react-utilities, which includes only basic accessibility hooks.

emotion

The `emotion` package is a library designed for writing CSS styles with JavaScript. It offers more advanced styling capabilities compared to the basic styling utilities in @fluentui/react-utilities.

README

@fluentui/react-utilities

React Utilities for Fluent UI React components

These are not production-ready components and should never be used in product. This space is useful for testing new components whose APIs might change before final release.