protected  void compile(String name,
    File baseDirectory,
    String encoding) throws LanguageException 
{
        try {
            int pos = name.lastIndexOf(File.separatorChar);
            String filename = name.substring(pos + 1);
            String pathname =
                    baseDirectory.getCanonicalPath() + File.separator +
                    name.substring(0, pos).replace(File.separatorChar, '/");
            String packageName =
                    name.substring(0, pos).replace(File.separatorChar, '.");
            String[] args = {
                "-extends",
                "org.apache.cocoon.components.language.markup.xsp.JSGenerator",
                "-nosource",
                "-O", "9",
                "-package", packageName,
                "-o", filename + ".class",
                pathname + File.separator + filename + "." + this.getSourceExtension()
            };
            Main.main(args);
        } catch (Exception e) {
            getLogger().warn("JavascriptLanguage.compile", e);
            throw new LanguageException(e.getMessage());
        }
}

Compile a source file yielding a loadable class file.

 public String getSourceExtension() 
{
        return "js";
}

Return the language's canonical source file extension.