Input anything and the script will add enough spaces to make it appear centered on a FullHD steam client. The result is saved in the clipboard and output in the console. This is a proof of concept or whatever.

whitespacer.js

// On FullHD in steam client, a custom info box is 90 spaces wide.
// This code WORKS, but it's ugly and not well thought out.
// Look at this as a proof of concept if you will.
const SPACE = ' '

const cp = require('copy-paste')
const rl = require('readline').createInterface({
  input: process.stdin,
  output: process.stdout
})

let settings = {
	style: 'centered',
	ignore: 0
}

let out = ''
rl.on('line', input => {
	if (input === 'exit') process.exit(1)

	if (input.indexOf('settings') !== -1) {
		if (input.indexOf('.style') !== -1) {
			settings.style = input.slice(16)
		} else { /* ... */ }
	} else {
		let s = ''
		if (settings.style === 'centered') {
			for (let i = settings.ignore; i++ <= (45 - (input.length / 2));) {
				s += SPACE
			}
		} else if (settings.style === 'rightbound') {
			for (let i = settings.ignore; i++ <= 90 - input.length;) {
				s += SPACE
			}
		} else throw 'Invalid style.'

		out = s + input
		console.log(out)

		cp.copy(out)
	}
})