sindresorhus

is-unicode-supported

Detect whether the terminal supports Unicode.

import isUnicodeSupported = require('is-unicode-supported');

import isUnicodeSupported from 'is-unicode-supported';

declare function isUnicodeSupported(): boolean;

export default function isUnicodeSupported(): boolean;

export default function isUnicodeSupported() {

		Boolean(process.env.WT_SESSION) || // Windows Terminal

		process.env.TERM_PROGRAM === 'vscode' ||

		process.env.TERM === 'xterm-256color' ||

	"description": "Detect whether the terminal supports Unicode",

	"repository": "sindresorhus/is-unicode-supported",

	"funding": "https://github.com/sponsors/sindresorhus",

> Detect whether the terminal supports Unicode

This can be useful to decide whether to use Unicode characters or fallback ASCII characters in command-line output.

Note that the check is quite naive. It just assumes all non-Windows terminals support Unicode and hard-codes which Windows terminals that do support Unicode. However, I have been using this logic in some popular packages for years without problems.

const isUnicodeSupported = require('is-unicode-supported');

Returns a `boolean` for whether the terminal supports Unicode.

- [is-interactive](https://github.com/sindresorhus/is-interactive) - Check if stdout or stderr is interactive

- [supports-color](https://github.com/chalk/supports-color) - Detect whether a terminal supports color

- [figures](https://github.com/sindresorhus/figures) - Unicode symbols with Windows fallbacks

- [log-symbols](https://github.com/sindresorhus/log-symbols) - Colored symbols for various log levels

		@@ -6,3 +6,3 @@ /**
		```
		import isUnicodeSupported = require('is-unicode-supported');
		import isUnicodeSupported from 'is-unicode-supported';

		@@ -13,4 +13,2 @@ isUnicodeSupported();
		*/
		declare function isUnicodeSupported(): boolean;

		export = isUnicodeSupported;
		export default function isUnicodeSupported(): boolean;

		@@ -1,4 +0,2 @@
		'use strict';

		module.exports = () => {
		export default function isUnicodeSupported() {
		if (process.platform !== 'win32') {
		@@ -13,2 +11,2 @@ return true;
		process.env.TERM === 'alacritty';
		};
		}

		{
		"name": "is-unicode-supported",
		"version": "0.1.0",
		"version": "1.0.0",
		"description": "Detect whether the terminal supports Unicode",
		@@ -13,4 +13,6 @@ "license": "MIT",
		},
		"type": "module",
		"exports": "./index.js",
		"engines": {
		"node": ">=10"
		"node": ">=12"
		},
		@@ -38,3 +40,3 @@ "scripts": {
		"devDependencies": {
		"ava": "^2.4.0",
		"ava": "^3.15.0",
		"tsd": "^0.14.0",
		@@ -41,0 +43,0 @@ "xo": "^0.38.2"

		@@ -18,3 +18,3 @@ # is-unicode-supported
		```js
		const isUnicodeSupported = require('is-unicode-supported');
		import isUnicodeSupported from 'is-unicode-supported';

		@@ -21,0 +21,0 @@ isUnicodeSupported();

Fixed alerts

Improved metrics

Worsened metrics