What is the method for importing or requiring standard node modules in TypeScript?

How can I effectively use the require function in typescript with standard NPM modules? I am currently attempting to utilize the debug package.

I have installed it from npm and also ran tsd install debug. However, I am facing issues where the syntax works fine in one file but not in another. My assumption is that this is related to the load order, possibly causing TypeScript to mistake variable redeclaration?

let debug = require("debug")("async-test");
# ReferenceError: debug is not defined

debug = require("debug")("async-test");
# ReferenceError: debug is not defined

The code appears identical on both left and right panels (in different files), yet one might display an error while the other does not.

https://i.sstatic.net/bd6Pe.png

importtypescriptrequire

Answer №1

Looking for the most effective way to use require in conjunction with typescript and standard NPM modules?

Why not give typings a try? It offers excellent debug definitions, which can be found at https://github.com/typed-typings/npm-debug. 

npm install typings -g
typings install debug

Next, configure your tsconfig.json: https://github.com/typings/typings#maindts-and-browserdts

You can now simply do: 

import debug = require('debug')

All while maintaining complete type safety 🌹

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