ascii-string-align 
Description
Using Node.js, trim then pad an ASCII string to a specific width. Optionally specify a given alignment of the text: left, right, center, justify.
Please note that the library may not format multi-byte strings nicely, so ASCII is all that is really supported.
Installation
Add this library to your current Node.js project using npm:
npm install --save ascii-string-align
Or, checkout the source:
git clone https://github.com/tcowley/ascii-string-align
Code Example
Here is a basic code example. Full behaviour is documented in the API Reference below
var asciiStringAlign = require('ascii-string-align');
var myString = 'a b c d e';
var width = 20;
['left', 'right', 'center', 'justify'].forEach(function(alignment) {
console.log('[' + asciiStringAlign(myString, width, alignment) + ']');
});
This example will output:
[a b c d e ]
[ a b c d e]
[ a b c d e ]
[a b c d e] API Reference
Basics
The library exports one method, which accepts two parameters:
| Param | Values | Description |
|---|---|---|
| asciiString | Any length of ASCII string | The string to be padded with spaces to the specified width. |
| width | Any positive integer | The width, in characters, that the resulting string should be. If width is shorter than the length of asciiString, asciiString will be returned unchanged. |
| alignment | Optional. One of 'left', 'right', 'center' or 'justify'. Default is 'left' | Determines how spaces are added to the string. See String Alignment, below for examples. |
The return value is always a string. Illegal inputs throw an error.
Tests
Tests are run automatically using Travis CI, but you can run them yourself quite easily.
$ git clone https://github.com/tcowley/ascii-string-align
$ cd ascii-string-align
$ npm install
$ npm test
// test output displays here
The project is using Tape for writing tests. For a small project like this, tape is very easy to use.
