normalize-filenames.js

Raven.config(dsn, {
  dataCallback: function(data) {
    var stack = data.stacktrace;
    if (!stack) return data;

    var normalize = function(filename) {
      return filename.split("/www/", 2)[-1];
    };

    var frame;
    for (var i = 0; i < stack.frames.length; i++) {
        frame.filename = normalize(stack.frames[i].filename);
    }
    return data;
  }
});