stylelint/lib/utils/addEmptyLineBefore.js

A mighty, modern CSS linter.

/* @flow */
'use strict';

const _ = require('lodash');

// Add an empty line before a node. Mutates the node.
function addEmptyLineBefore(
	node /*: postcss$node*/,
	newline /*: '\n' | '\r\n'*/,
) /*: postcss$node*/ {
	if (!/\r?\n/.test(node.raws.before)) {
		node.raws.before = _.repeat(newline, 2) + node.raws.before;
	} else {
		node.raws.before = node.raws.before.replace(/(\r?\n)/, `${newline}$1`);
	}

	return node;
}

module.exports = addEmptyLineBefore;