Fix character matching for emoji (#7)

Author: Richienb

index.d.ts

@@ -1,29 +1,22 @@
-declare const stringLength: {
-	/**
-	Get the real length of a string - by correctly counting astral symbols and ignoring [ansi escape codes](https://github.com/sindresorhus/strip-ansi).
+/**
+Get the real length of a string - by correctly counting astral symbols and ignoring [ansi escape codes](https://github.com/sindresorhus/strip-ansi).
 
-	`String#length` errornously counts [astral symbols](https://web.archive.org/web/20150721114550/http://www.tlg.uci.edu/~opoudjis/unicode/unicode_astral.html) as two characters.
+`String#length` errornously counts [astral symbols](https://web.archive.org/web/20150721114550/http://www.tlg.uci.edu/~opoudjis/unicode/unicode_astral.html) as two characters.
 
-	@example
-	```
-	import stringLength = require('string-length');
+@example
+```
+import stringLength = require('string-length');
 
-	'🐴'.length;
-	//=> 2
+'🐴'.length;
+//=> 2
 
-	stringLength('🐴');
-	//=> 1
+stringLength('🐴');
+//=> 1
 
-	stringLength('\u001B[1municorn\u001B[22m');
-	//=> 7
-	```
-	*/
-	(string: string): number;
-
-	// TODO: Remove this for the next major release, refactor the whole definition to:
-	// declare function stringLength(string: string): number;
-	// export = stringLength;
-	default: typeof stringLength;
-};
+stringLength('\u001B[1municorn\u001B[22m');
+//=> 7
+```
+*/
+declare function stringLength(string: string): number;
 
 export = stringLength;

index.js

@@ -1,9 +1,7 @@
 'use strict';
 const stripAnsi = require('strip-ansi');
-const astralRegex = require('astral-regex');
+const charRegex = require('char-regex');
 
-const stringLength = string => stripAnsi(string).replace(astralRegex(), ' ').length;
+const stringLength = string => stripAnsi(string).match(charRegex()).length;
 
 module.exports = stringLength;
-// TODO: Remove this for the next major release
-module.exports.default = stringLength;

package.json

@@ -10,7 +10,7 @@
 		"url": "sindresorhus.com"
 	},
 	"engines": {
-		"node": ">=8"
+		"node": ">=10"
 	},
 	"scripts": {
 		"test": "xo && ava && tsd"
@@ -34,12 +34,12 @@
 		"codes"
 	],
 	"dependencies": {
-		"astral-regex": "^1.0.0",
-		"strip-ansi": "^5.2.0"
+		"char-regex": "^1.0.2",
+		"strip-ansi": "^6.0.0"
 	},
 	"devDependencies": {
-		"ava": "^1.4.1",
-		"tsd": "^0.7.1",
-		"xo": "^0.24.0"
+		"ava": "^3.1.0",
+		"tsd": "^0.11.0",
+		"xo": "^0.25.3"
 	}
 }

test.js

@@ -1,5 +1,5 @@
-import test from 'ava';
-import stringLength from '.';
+const test = require('ava');
+const stringLength = require('.');
 
 test('get the real length of a string', t => {
 	t.is(stringLength('𠀔'), 1);
@@ -9,4 +9,8 @@ test('get the real length of a string', t => {
 	t.is(stringLength('🐴'), 1);
 	t.is(stringLength('𝌆'), 1);
 	t.is(stringLength('\u001B[1mfoo\u001B[22m'), 3);
+	t.is(stringLength('❤️'), 1);
+	t.is(stringLength('👊🏽'), 1);
+	t.is(stringLength('🏴󠁧󠁢󠁥󠁮󠁧󠁿❤️谢👪'), 4);
+	t.is(stringLength('\u001B[1m👩‍👧‍👦°✿\u001B[22m'), 3);
 });