Fondue playground

Input

JavaScript source code to trace:
function fib(n) { if (n < 2) { return n; } else { return fib(n - 2) + fib(n - 1); } } [0, 1, 2, 3, 4, 5].forEach(function (n) { console.log('fib(' + n + ') = ' + fib(n)); });

Other JavaScript source code (won't be traced):
var nodesHandle = __tracer.trackNodes(); $('#output').empty(); var $list = $('<ul>').appendTo('#output'); __tracer.newNodes(nodesHandle).forEach(printNode); function printNode(node) { if (node.type === 'function') { $('<li>').appendTo($list) .text('function: ' + node.name + ' at ' + node.path + ':' + node.start.line + ' with id ' + node.id); } }
Trace information will be available in the global __tracer object. See the documentation if you need help using its API.

You can use jQuery. $('#output') (the green box below) may be handy for testing.

Run

You may need to reload this page if things get crazy.

Output

Instrumented source code:

Debugging area: