Improve publishing speed for Typescript apps

[wwestrop]

The default template for a Typescript function app (created using func init --language typescript --worker-runtime node) will install development tooling into node_modules when you run npm install.

Publishing this simple app using func azure functionapp publish myappname includes all this, and is therefore very slow.

This PR reduces the amount deployed to Azure by about 181 MB (on Windows) so it is substantially faster to publish.

Pull request checklist

• My changes do not require documentation changes
  • Otherwise: Documentation issue linked to PR
• My changes do not need to be backported to a previous version
  • Otherwise: Backport tracked by issue/PR #issue_or_pr
• I have added all required tests (Unit tests, E2E tests)

[ejizba]

I think this is the most impactful line, and I think it makes total sense to add it. Thank you!!!

Fwiw, adding to the funcignore will help with one-off deployments from core tools. However, if you deploy through a CI/CD pipeline I would recommend adding npm prune --production before deploying, which will more consistently get rid of all dev dependencies.

Another fwiw, VS Code will run npm prune --production by default if you deploy through there.

[wwestrop]

npm prune is a good shout, I was just trying to do a quick-n-dirty functionapp in this case 😉

[wwestrop]

I've made the changes requested - typescript and azure-functions-core-tools between them account for almost the entire payload so it's still a very good saving if you forget to prune 👍

[ejizba]

Thank you!