Cannot find name 'require'. Do you need to install type definitions for node? Try npm i @types/node and then add - TypeScript 2.xnode to the types field in your tsconfig.” Code Answer’s

[JeanPaulll]

TypeScript 2.x

npm install @types/node --save-dev

The Future of Declaration Files (6/15/2016)

Tools like Typings and tsd will continue to work, and we’ll be working alongside those communities to ensure a smooth transition.

Verify or Edit your src/tsconfig.app.json so that it contains the following:

...
"types": [ "node" ],
"typeRoots": [ "../node_modules/@types" ]
...

Make sure is the file in the src folder and no the one on the root app folder.

By default, any package under @types is already included in your build unless you've specified either of these options. Read more