Fix bug where bundler stops watching files when an error occurs.

lib/inline-less.js

@@ -0,0 +1,67 @@
+var co = require('co');
+var cheerio = require('cheerio');
+var fs = require('mz/fs');
+var isLocalPath = require('is-local-path');
+var less = require('less');
+var path = require('path');
+var R = require('ramda');
+var Ru = require('@panosoft/ramda-utils');
+
+var render = co.wrap(function * (filename, options) {
+	options = R.merge(options || {}, { filename });
+	var contents = yield fs.readFile(filename, 'utf8');
+	return yield less.render(contents, options);
+});
+/**
+ * @param {String} html
+ * 	HTML source to inline
+ * @param {String} filename
+ * 	Filename to apply to the HTML source being inlined
+ * @param {Object} options
+ * 	LESS compiler options
+ */
+var inlineLess = co.wrap(function * (html, filename, options) {
+	options = Ru.defaults({
+		relativeUrls: true
+	}, options || {});
+	var basedir = path.dirname(filename);
+
+	// get links
+	var $ = cheerio.load(html, {decodeEntities: false});
+	var $links = $('link[rel="stylesheet/less"]')
+		.filter((index, element) => isLocalPath($(element).attr('href')));
+
+	// render LESS stylesheets
+	var files = [];
+	var outputs = [];
+	try {
+		$links.each((index, element) => {
+			var href = $(element).attr('href');
+			var filename = path.resolve(basedir, href);
+			files = R.append(filename, files);
+			outputs = R.append(render(filename, options), outputs);
+		});
+		outputs = yield outputs;
+	}
+	catch (error) {
+		if (!error.filename) error.filename = filename;
+		error.files = R.uniq(files);
+		throw error;
+	}
+
+	// include imported filenames in files array
+	files = R.concat(files, R.flatten(R.map(output => output.imports, outputs)));
+	files = R.uniq(files);
+
+	// replace links
+	$links.each((index, element) => {
+		var style = $('<style>').html(outputs[index].css);
+		$(element).replaceWith(style);
+	});
+
+	return {
+		html: $.xml(),
+		files
+	};
+});
+module.exports = inlineLess;