rtl-detect

What is rtl-detect?

The rtl-detect npm package is used to detect if a given language is written in a right-to-left (RTL) script. This can be useful for internationalization and localization purposes, especially when dealing with languages like Arabic, Hebrew, and Persian.

What are rtl-detect's main functionalities?

Detect if a language is RTL

This feature allows you to check if a given language code corresponds to a right-to-left language. In this example, 'ar' (Arabic) is checked and returns true.

const rtlDetect = require('rtl-detect');
const isRtl = rtlDetect.isRtlLang('ar');
console.log(isRtl); // true

Get list of RTL languages

This feature provides a list of all language codes that are written in a right-to-left script. This can be useful for dynamically adjusting UI elements based on the user's language.

const rtlDetect = require('rtl-detect');
const rtlLanguages = rtlDetect.getRtlLangs();
console.log(rtlLanguages); // ['ar', 'he', 'fa', ...]

Other packages similar to rtl-detect

rtlcss

rtlcss is a framework for transforming CSS from left-to-right (LTR) to right-to-left (RTL). While rtl-detect focuses on detecting RTL languages, rtlcss is more about converting CSS styles to support RTL layouts.

bidi-js

bidi-js is a JavaScript library for handling bidirectional text. It provides utilities for detecting and managing text direction, similar to rtl-detect, but with more focus on text processing and manipulation.

i18next

i18next is an internationalization framework for JavaScript. It provides extensive support for language detection, including RTL languages, but also offers a wide range of other localization features such as translation and formatting.

README

rtl-detect

This library will help you to detect if the locale is right-to-left language or not.

Usage

require rtl-detect lib

var rtlDetect = require('rtl-detect');

isRtlLang

This function will check if the locale is right-to-left language or not.

Examples:

var isRtl = rtlDetect.isRtlLang('ar-JO');
// isRtl will be true

var isRtl = rtlDetect.isRtlLang('ar_JO');
// isRtl will be true

var isRtl = rtlDetect.isRtlLang('ar');
// isRtl will be true

var isRtl = rtlDetect.isRtlLang('en-US');
// isRtl will be false

getLangDir

This function will get language direction for the locale.

Examples:

var langDir = rtlDetect.getLangDir('ar-JO');
// langDir will be 'rtl'

var langDir = rtlDetect.getLangDir('ar_JO');
// langDir will be 'rtl'

var langDir = rtlDetect.getLangDir('ar');
// langDir will be 'rtl'

var langDir = rtlDetect.getLangDir('en-US');
// langDir will be 'ltr'

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