Testing build errors locally

To test build errors locally, set it up using:

pip install -e flake8-gramex
npm install -g eslint@2.6.0 eslint-plugin-template htmllint-cli jscpd

Make sure you have .flake8, .eslintrc and .htmllintrc from yo gramex. Then run:

flake8
eslint --ext js,html .
htmllint

This will test most build errors. But if you want to test them all, another approach is:

This is documented on Wiki.