stylelint/lib/utils/isOnlyWhitespace.js

A mighty, modern CSS linter.

/* @flow */
'use strict';

const isWhitespace = require('./isWhitespace');

/**
 * Returns a Boolean indicating whether the the input string is only whitespace.
 */
module.exports = function(input /*: string*/) /*: boolean*/ {
	let isOnlyWhitespace = true;

	for (let i = 0, l = input.length; i < l; i++) {
		if (!isWhitespace(input[i])) {
			isOnlyWhitespace = false;
			break;
		}
	}

	return isOnlyWhitespace;
};