Issue
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.
Solution
You need to include the definition file for node.
TypeScript 2.0+
Install using npm:
npm install --save-dev @types/node
TypeScript < 2.0
If you use typings then you can run this command:
typings install dt~node --global --save
Or if you are using typings < 1.0 run:
typings install node --ambient --save
Or if all else fails, manually download the file here and include it in your project.
Answered By – David Sherret
Answer Checked By – Terry (BugsFixing Volunteer)