Require Node.js 8

.travis.yml

@@ -2,4 +2,3 @@ language: node_js
 node_js:
   - '10'
   - '8'
-  - '6'

index.d.ts

@@ -2,5 +2,19 @@
 Get the visual width of a string - the number of columns required to display it.
 
 Some Unicode characters are [fullwidth](https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms) and use double the normal width. [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code) are stripped and doesn't affect the width.
+
+@example
+```
+import stringWidth from 'string-width';
+
+stringWidth('a');
+//=> 1
+
+stringWidth('古');
+//=> 2
+
+stringWidth('\u001B[1m古\u001B[22m');
+//=> 2
+```
 */
-export default function stringWidth(text: string): number;
+export default function stringWidth(string: string): number;

index.js

@@ -1,21 +1,21 @@
 'use strict';
 const stripAnsi = require('strip-ansi');
 const isFullwidthCodePoint = require('is-fullwidth-code-point');
-const emojiRegex = require('emoji-regex')();
+const emojiRegex = require('emoji-regex');
 
-const stringWidth = input => {
-	input = input.replace(emojiRegex, '  ');
+const stringWidth = string => {
+	string = string.replace(emojiRegex(), '  ');
 
-	if (typeof input !== 'string' || input.length === 0) {
+	if (typeof string !== 'string' || string.length === 0) {
 		return 0;
 	}
 
-	input = stripAnsi(input);
+	string = stripAnsi(string);
 
 	let width = 0;
 
-	for (let i = 0; i < input.length; i++) {
-		const code = input.codePointAt(i);
+	for (let i = 0; i < string.length; i++) {
+		const code = string.codePointAt(i);
 
 		// Ignore control characters
 		if (code <= 0x1F || (code >= 0x7F && code <= 0x9F)) {

package.json

@@ -10,7 +10,7 @@
 		"url": "sindresorhus.com"
 	},
 	"engines": {
-		"node": ">=6"
+		"node": ">=8"
 	},
 	"scripts": {
 		"test": "xo && ava && tsd-check"
@@ -21,9 +21,7 @@
 	],
 	"keywords": [
 		"string",
-		"str",
 		"character",
-		"char",
 		"unicode",
 		"width",
 		"visual",
@@ -47,7 +45,7 @@
 	],
 	"dependencies": {
 		"emoji-regex": "^8.0.0",
-		"is-fullwidth-code-point": "^2.0.0",
+		"is-fullwidth-code-point": "^3.0.0",
 		"strip-ansi": "^5.1.0"
 	},
 	"devDependencies": {

readme.md

@@ -19,17 +19,14 @@ $ npm install string-width
 ```js
 const stringWidth = require('string-width');
 
+stringWidth('a');
+//=> 1
+
 stringWidth('古');
 //=> 2
 
-stringWidth('\u001b[1m古\u001b[22m');
+stringWidth('\u001B[1m古\u001B[22m');
 //=> 2
-
-stringWidth('a');
-//=> 1
-
-stringWidth('\u001B]8;;https://github.com\u0007Click\u001B]8;;\u0007');
-// => 5
 ```