brainstorming server.js fails with ESM error due to package.json "type": "module"

[david46liu]

Bug Description

skills/brainstorming/scripts/server.js uses CommonJS syntax (require(), module.exports) but package.json declares "type": "module", causing Node.js to treat all .js files as ES modules.

Error

ReferenceError: require is not defined in ES module scope, you can use import instead
This file is being treated as an ES module because it has a '.js' file extension and
'...\superpowers\5.0.4\package.json' contains "type": "module".

Steps to Reproduce

1. Install the superpowers plugin (v5.0.4)
2. Trigger the brainstorming skill which calls start-server.sh
3. The script runs node server.js which fails immediately

Environment

• Windows 11, Git Bash
• Node.js v22.17.1
• superpowers v5.0.4

Workaround

Rename server.js → server.cjs and update the two references in start-server.sh (lines 112 and 118) from node server.js to node server.cjs.

Suggested Fix

Either:

1. Rename server.js to server.cjs and update start-server.sh (minimal change)
2. Or convert server.js to ESM syntax (import instead of require, etc.)

[pkrisko]

I took a stab at this in PR #787

I implemented option 2, but (maintainers) let me know if instead you'd prefer the smaller diff of option 1, or any other changes you'd like.

[obra]

Duplicate of #774. Fixed by renaming server.js → server.cjs (PR #784, cherry-picked to dev).