Unresolved functions or methods using CodeceptJS in PhpStorm

Question

I've just followed the CodeceptJS Quickstart and opened first_test.js in the PhpStorm IDE (equivalent to WebStorm, IntelliJ, etc.).

For all the built-in functions, I'm getting "Unresolved function or method …":

I also don't get any autocompletion on I.

I've tried the following.

1. Looked for a CodeceptJS plugin. Didn't find any.
2. Enabled codeceptjs/node_modules in Settings -> Languages & Frameworks -> JavaScript -> Libraries.
3. Set JavaScript language version to ECMAScript 6.
4. Enabled the Node.js Core library.
5. Restarted PhpStorm.

Answer 1

Please run 'npm install codeceptjs'.