@fluentui/utilities

What is @fluentui/utilities?

@fluentui/utilities is a utility library that provides a set of helper functions and utilities to assist with common tasks in JavaScript and React applications. It is part of the Fluent UI suite, which is a collection of libraries for building user interfaces.

What are @fluentui/utilities's main functionalities?

Event Handling

The EventGroup class helps manage event listeners, making it easier to add and remove them in a consistent manner.

const { EventGroup } = require('@fluentui/utilities');

const eventGroup = new EventGroup(this);
eventGroup.on(window, 'resize', () => {
  console.log('Window resized');
});

CSS Class Management

The css function helps concatenate CSS class names conditionally, making it easier to manage dynamic class names in your components.

const { css } = require('@fluentui/utilities');

const className = css('class1', 'class2', { 'class3': true, 'class4': false });
console.log(className); // Outputs: 'class1 class2 class3'

Object Merging

The assign function is used to merge multiple objects into one, similar to Object.assign but with additional features.

const { assign } = require('@fluentui/utilities');

const obj1 = { a: 1, b: 2 };
const obj2 = { b: 3, c: 4 };
const mergedObj = assign({}, obj1, obj2);
console.log(mergedObj); // Outputs: { a: 1, b: 3, c: 4 }

DOM Utilities

The getDocument function provides a safe way to access the document object, which is useful for server-side rendering scenarios.

const { getDocument } = require('@fluentui/utilities');

const doc = getDocument();
console.log(doc); // Outputs: [object Document]

Other packages similar to @fluentui/utilities

lodash

Lodash is a popular utility library that provides a wide range of functions for common programming tasks such as manipulating arrays, objects, and strings. It is more comprehensive than @fluentui/utilities and is widely used in the JavaScript community.

classnames

Classnames is a utility for conditionally joining classNames together. It is similar to the css function in @fluentui/utilities but is more focused and widely adopted for managing dynamic class names in React applications.

eventemitter3

EventEmitter3 is a high-performance event emitter for Node.js and the browser. It provides similar event handling capabilities as the EventGroup class in @fluentui/utilities but is more focused on event management.

README

@fluentui/utilities

Utilities for Fluent UI React (formerly Office UI Fabric React)

This package includes a number of basic utility functions required by most Fluent UI React components.

See GitHub for more details on the Fluent UI React project and packages within.