IOException: Cannot run program "npm" about grunt-sbt HOT 1 OPEN

I faced the same problem for mac machine but for a different plugin.

While running sbt from within IntellijIDEA it gave the same error as mentioned in the issue but running it from the terminal worked fine.

It turns out that intellijIDEA uses different PATH than that is SET in environment variable.

For more details refer the blog fix PATH environment variable for IntelliJ IDEA on Mac OS X

As a solution I created a shell script

#!/usr/bin/env bash
open -a "IntelliJ IDEA"

and made it execute at login refer this answer to launch an executable at login

Well this seems like an intellijIDEA problem as others have also faced the same problem which can be referred here

from grunt-sbt.