I'm running on a MacBook Air. I installed VS Code as an IDE and also have TypeScript installed.

I have a simple file with just this line:

import fs = require('fs');

I'm getting a red squiggly under the 'fs' inside the parenthesis and the error message is [ts] Cannot find module 'fs'. The file has a .ts extension. I'm new to JavaScript and to TypeScript, but I was under the impression that fs was a core module, so how could it not be found? How do I fix the problem?

Other things that I tried already:

• Putting a simple function body in the file and then compiling on the command line with tsc. I get an essentially equivalent error there: error TS2307: Cannot find module 'fs'.


• On the command line sudo npm install fs -g. This reports apparent success, but doesn't fix the problem.

I poked around SE and the web, but the answers that seemed close all appear to assume that 'fs' is available.