JavaScript CLI-style progress bar with variable width

cli_progress_bar.js

/**
* Example:
* 	progress_bar(40, 0.5);
* Returns:
* 	[####################-------------------] 50%
*
*/
function progress_bar(barsize, percentage) {
	let bar = "";
	let cnt = Math.floor(barsize * percentage);

	for(let i=1;i<barsize;i++) {
		if(i<=cnt)
			bar += '#';
		else
			bar += '-';
	}

	return "["+bar+"] "+Math.floor(percentage * 100)+"%";
}