falafel-helpers

Wraps your falafel callback function, adding handy helpers:

var falafelHelpers = require('falafel-helpers');

var srcBefore = fs.readFileSync('test.js', 'utf8');
var srcAfter = falafel(srcBefore, helpers.wrap(function (node) {
	if (/Expression$/.test(node.type)) {
		node.wrap('debug(', ')');
	} else if (node.type === 'BlockStatement') {
		node.before('console.log("entering block");');
		node.after('console.log("exiting block");', true); // second argument makes it use a try-finally to always execute the inserted code
	}
});

Also works with falafel-map:

var falafelHelpers = require('falafel-helpers');

var srcBefore = fs.readFileSync('test.js', 'utf8');
var srcAfter = falafel(srcBefore, helpers.wrap(function (node) {
	if (/Expression$/.test(node.type)) {
		node.wrap('debug(', ')');
	}
}, { falafelMap: true }));