npm build errors `Error: Cannot find module 'ws'`

[benloh]

Joshua reports:

and

lerna ERR! npm run build stderr:
sh: webpack: command not found
npm ERR! code ELIFECYCLE

[benloh]

Explanation

Errors like Error: Cannot find module 'ws' and sh: webpack: command not found are generally related package errors to switching between node versions. e.g. you use one version of node to run Net.Create, then switch to GEM-STEP without switching node.

Solution

A full clean should do the trick. All steps are important here!

Currently the node version should be 14.21.3.

cd gsgo
nvm use
rm -rf node_modules
npm ci
npm run bootstrap
npm run gem

Important points:

• make sure you're using the right version of node
• if npm run dev isn't working, generally you need to remove the node_modules folder to force node to updates its pacakges. If you run npm ci without clearing out any cached packages, you can end up in a state where nothing seems to work.
• if package.json has changed you need to run npm run bootstrap to rebuild libraries.
• if you changed any server side code, you need to run npm run build (npm run bootstrap will also trigger a build).