Ascii Data Table

This module provides functionality to render tables with text borders / outlines so it can be pasted into the medium of choice.

The configuration is very limited by design, all that's configurable in the current version is the maximun width of the columns.

The API exposes only two methods: run(rows, [options]) where rows is expected to be an array with an index for every row, and each row is also expected to be an array with one index for every column, and getMaxColumnWidth(rows) to get the width of the widest column.
All rows should have the same number of columns, and the first row is expected to be the header column with titles for each column.

[
  ['first column', 'second column'], // title row
  ['my data row 1 col 1', 'my data row 1 col 2'], // first data row
  ['my data row 2 col 1', 'my data row 2 col 2'], // second data row
]

With default max width, the above would produce:

+===================+===================+
|first column       |second column      |
+===================+===================+
|my data row 1 col 1|my data row 1 col 2|
+-------------------+-------------------+
|my data row 2 col 1|my data row 2 col 2|
+-------------------+-------------------+

Installation

Install with npm in your working directory:

npm install ascii-data-table --save

Install with bower in your working directory:

bower install ascii-data-table --save

Usage

Two packages are produced, one for Node.js environment and one for web browsers.

In Node.js

Usage in Node.js varies depending if the will be used within a ES2015 application or not.

In ES2015

// If install with npm
import AsciiTable from 'ascii-data-table'

// or if installed by cloning git repo, use the correct path
//import AsciiTable from '../lib/ascii-data-table'

// The data to render
const items = [['x', 'y'], ['a', 'b'], ['c', 'd']]

// Render and save in 'res'
const res = AsciiTable.run(items)

In ES 5.5

// If install with npm
var AsciiTable = require('ascii-data-table').default

// or if installed by cloning git repo, use the correct path
//var AsciiTable = require('../lib/ascii-data-table').default

var items = [['x', 'y'], ['a', 'b'], ['c', 'd']]
var res = AsciiTable.run(items)

In web browsers

A bundle for web browsers is created and can be found in ./lib.

<script type="text/javascript" src="../lib/bundle.js"></script>
<script type="text/javascript">
  var items = [['x', 'y'], ['a', 'b'], ['c', 'd']]
  var output = AsciiTable.run(items)
  document.getElementById('my-table').innerHTML = output
  console.log(output)
</script>

Examples / Demo

You can try online here: Online demo
In the ./examples folder there are examples for node and web browser environments.
One cool thing in the browser demo is that you can hook up a range slider to the maximun width of the columns, giving this effect:

Testing

Run npm test to execute test in both Node.js and browser environments.
Run npm run test:watch to have tests run on file changes.

Contributing

All bug reports, feature requests and pull requests are welcome. This project uses the Javascript Standard Style and a lint check will run before all tests and builds.