Cannot find module with ES2015 modules config

[DanielRamosAcosta]

When using TypeScript with "module": "es2015", the compiler gives the following error:

index.ts(1,30): error TS2307: Cannot find module 'apollo-server-express'.

Here is the content of the index.ts:

import {graphqlExpress} from 'apollo-server-express'

• typescript: 2.6.1
• apollo-server-express: 1.2.0
• graphql: 0.11.7

Any idea why this is happening?

[DanielRamosAcosta]

The solution was to set "moduleResolution": "node" at tsconfig.json