mosquito-net.js

// Stupid JavaScript and console tricks.
// Trap and record console things and errors.

function MosquitoNet() {}
MosquitoNet.history = [];
MosquitoNet.writeHistory = function(type, args) {
  MosquitoNet.history.push({ type: type, args: args });
}
MosquitoNet.shadowConsoleFunction = function(name) {
  var oldFn = console[name];
  console[name] = MosquitoNet[name] = function() {
    MosquitoNet.writeHistory(name, Array.prototype.slice.call(arguments));
    oldFn.apply(console, arguments);
  };
}
MosquitoNet.throw = function(err) {
  MosquitoNet.writeHistory('throw', arguments);
  throw err;
}
MosquitoNet.wrap = function(fn) {
  MosquitoNet.shadowConsoleFunction('log');
  MosquitoNet.shadowConsoleFunction('warn');
  MosquitoNet.shadowConsoleFunction('error');
  var newFn = function() {
    try {
      fn.apply(fn, arguments);
    } catch(err) {
      this.throw(err);
    }
  }
  return newFn.bind(this);
}
MosquitoNet.toString = function() {
  return MosquitoNet.history.map(function(item) {
    var str = '';
    if(item.type === 'throw') {
      str += '----- Uncaught Error -----\n';
      str += item.args[0].stack || item.args[0];
    } else {
      str += '----- console.' + item.type + ' -----\n';
      str += item.args.join('\n');
    }
    return str;
  }).join('\n\n') + '\n';
}