leave the string as is if the terminal is too narrow

LICENSE

@@ -1,5 +1,5 @@
 ISC License (ISC)
-Copyright 2018 - 2019 Shinnosuke Watanabe
+Copyright 2018 - 2019 Watanabe Shinnosuke
 
 Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
 

README.md

@@ -32,7 +32,7 @@ Generate simple framed text from a string`));
 
 ## Installation
 
-[Use](https://docs.npmjs.com/cli/install) [npm](https://docs.npmjs.com/getting-started/what-is-npm).
+[Use](https://docs.npmjs.com/cli/install) [npm](https://docs.npmjs.com/about-npm/).
 
 ```
 npm install tty-width-frame
@@ -76,29 +76,20 @@ ttyWidthFrame('abcdefghijklmnopqrstuvwxyz');
 */
 ```
 
-On a [non-interactive](http://www.tldp.org/LDP/abs/html/intandnonint.html) script, it thrown an `Error` instead.
+When the terminal window is too narrow, or more specifically, its width is less than 15, it just returns the original `string`.
 
 ```javascript
-// cp.js
-const ttyWidthFrame = require('tty-width-frame');
+// When the terminal width is 14
 
-ttyWidthFrame('This script throws an error.');
+ttyWidthFrame('abcdefghijklmnopqrstuvwxyz'); //=> 'abcdefghijklmnopqrstuvwxyz'
 ```
 
-```javascript
-const {execFile} = require('child_process');
-const {promisify} = require('util');
-
-(async () => {
-  const {stderr} = await promisify(execFile)('node', ['cp.js']);
-  // Error: tty-width-frame only supports TTY environments, but the program is running under a non-TTY environment.
-})();
-```
+On a [non-interactive](https://www.tldp.org/LDP/abs/html/intandnonint.html) script, it throws an `Error` instead.
 
 ## Related project
 
 * [neat-frame](https://github.com/shinnn/neat-frame) – works on both TTY and non-TTY environments, in exchange for larger dependency size
 
 ## License
 
-[ISC License](./LICENSE) © 2018 - 2019 Shinnosuke Watanabe
+[ISC License](./LICENSE) © 2018 - 2019 Watanabe Shinnosuke

index.js

@@ -23,8 +23,14 @@ module.exports = process.stdout && process.stdout.isTTY ? function ttyWidthFrame
 		}.`);
 	}
 
+	const {columns} = process.stdout;
+
+	if (columns < 15) {
+		return str;
+	}
+
 	// '  ┌'.length + '┐  '.length === 6
-	const contentWidth = process.stdout.columns - 6;
+	const contentWidth = columns - 6;
 
 	const padding = `  │${' '.repeat(contentWidth)}│`;
 	const verticalBar = '─'.repeat(contentWidth);

package.json

@@ -3,7 +3,7 @@
 	"version": "1.0.2",
 	"description": "Generate simple framed text fitting for the current text terminal",
 	"repository": "shinnn/tty-width-frame",
-	"author": "Shinnosuke Watanabe (https://github.com/shinnn)",
+	"author": "Watanabe Shinnosuke (https://github.com/shinnn)",
 	"license": "ISC",
 	"scripts": {
 		"pretest": "eslint .",

test.js

@@ -10,7 +10,7 @@ Object.defineProperties(process.stdout, {
 		value: true
 	},
 	columns: {
-		value: 10
+		value: 15
 	}
 });
 
@@ -75,6 +75,14 @@ test('ttyWidthFrame()', async t => {
 
 	await unlink(tmp);
 
+	Object.defineProperty(process.stdout, 'columns', {value: 14});
+
+	t.equal(
+		ttyWidthFrame('a'.repeat(100)),
+		'a'.repeat(100),
+		'should starts with an upper frame.'
+	);
+
 	t.throws(
 		() => ttyWidthFrame(),
 		/^RangeError.*Expected 1 argument \(<string>\), but got no arguments\./u,