How to install express in typings?

Question

I am trying to use expressjs in my app.

After installing it using typings install express --ambient --save, I run tsc, but I get two errors:

typings/main/ambient/express/index.d.ts(17,34): error TS2307: Cannot find module 'serve-static'. typings/main/ambient/express/index.d.ts(18,27): error TS2307: Cannot find module 'express-serve-static-core'.

So, I tried to install both:

typings install serve-static --ambient --save
typings install express-serve-static --ambient --save

and then I run tsc again, but get one more error:

typings/main/ambient/serve-static/index.d.ts(79,24): error TS2307: Cannot find module 'mime'.

How can I solve these problems? How can I install all dependencies of express automatically?

Answer 1

With Typescript 2.0(https://blogs.msdn.microsoft.com/typescript/2016/09/22/announcing-typescript-2-0/), now it is different:

If you install typescript with the following command:

npm install -g [email protected]

You will have to install express typings with command

npm install --save @types/express

Instead of typings getting installed with ambient/global like in earlier releases. The typings get installed in node_modules/@types/express directory

Your package.json will have the following fragment after doing npm install of types :

"dependencies": {
    "@types/express": "^4.0.33"
  }