Typescript: Cannot find namespace
In case you are a React dev that ends up here as I did - if there is JSX syntax in the file, try changing the extension of the file from .ts
to .tsx
.
After a lot of wasted time, it turns out this was due to the module
setting in the tsconfig file which should be:
"module": "commonjs"
This means Typescript will output common js modules instead of ES6 modules, meaning the code will run correctly as NodeJS code. I was therefore able to change require to import, since it compiles.
Maybe you have to use import instead of require:
import * as express from 'express';