gistfile1.js

var STDOUT = java.lang.System.out;

STDOUT.println("starting test");

var body =
  "function() {\n" +
  "// this is a common js module\n" +
  "var num = 234;\n" +
  "num.substr(1, 1);\n" +
    "}\n// #sourceURL=wibble.js";

STDOUT.println("module source is:\n" + body);

var f = eval(body);
try {
  f();
} catch (ex) {
  if (ex instanceof TypeError) {
    STDOUT.println("message is:" + ex.message);
    STDOUT.println("line no is:" + ex.lineNumber);
    STDOUT.println("filename is:" + ex.fileName);
  }
}