How to read the content from a (local) file with SpiderMonkey on the command line?

Question

I want to use SpiderMonkey for driving a test harness (for the in-browser version see here). Now, I tried the following:

var defaultFileName = "all.n3";
var reader = new FileReader();
reader.readAsText(defaultFileName);
reader.onload = fileLoaded;

which fails with the following error:

regression-tests.js:9: ReferenceError: FileReader is not defined

Sorry if this is a dumb question but I did look around here and RTFMd for a bit but wasn't able to figure what to do (import? how?).

Answer 1

FileReader is an XUL component. XUL components aren't available the standalone version of SpiderMonkey - they're provided by the browser.