[storybook] Ignore TS-related HMR warnings

[clintandrewhall]

Summary

Storybook uses HMR out-of-the-box when you run it locally, and so it outputs a ton of warnings that specific types aren't actually exported.

This ends up burying other valid warnings. In Canvas, for example, there was a warning that a story wasn't working properly, drowned out by a massive, irrelevant HMR warning.

Looking around, I came across this comment on an issue that led me to a common solution: a webpack plugin that suppresses that warning in the log.

After:

There's a NPM module that uses this strategy with an optional RegEx, but I didn't think we needed to add another dependency to handle a one-off warning in Storybook.

Comments welcome...!

[spalger]

@elasticmachine merge upstream

[smith]

Thanks for doing this.

You can also remove the warningsFilter from the stats config (https://github.com/elastic/kibana/blob/master/packages/kbn-storybook/webpack.config.ts#L22), which suppressed these warnings in the terminal output. I tried it and with your changes the warnings don't show up in either the terminal or the browser.

[clintandrewhall]

jenkins test this

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: d2450fd
• Storybooks Preview

Metrics [docs]

✅ unchanged

History

• 💚 Build #135317 succeeded d2450fd
• 💔 Build #135226 failed 2e3a7f3
• 💔 Build #134928 failed e016f7e

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[kibanamachine]

💔 Backport failed

Status	Branch	Result
❌	7.15	The branch "7.15" is invalid or doesn't exist

To backport manually run:
node scripts/backport --pr 103605

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create backports run node scripts/backport --pr 103605 or prevent reminders by adding the backport:skip label.

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create backports run node scripts/backport --pr 103605 or prevent reminders by adding the backport:skip label.

[kibanamachine]

Looks like this PR has a backport PR but it still hasn't been merged. Please merge it ASAP to keep the branches relatively in sync.