Stats - Generate sourcemaps for the odyssey app

[Nikschavan]

Related to #

Proposed Changes

• Generate the source maps for the Odyssey app dev builds
• Note: This PR is to have a discussion,n and if the team agrees then we could merge with any required changes

Why are these changes being made?

• Make it easier to debug Odyssey builds

Testing Instructions

• Use Option 3 from the testing instructions - PCYsg-Pp7-p2
• Check the sourcemaps are working when testing Odyssey stats, ie. CSS in the dev inspector should be displayed from the source SCSS files etc.

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
  • For UI changes, have we tested the change in various languages (for example, ES, PT, FR, or DE)? The length of text and words vary significantly between languages.
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-141450

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-141450&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-141450&env=a8c-for-agencies

[Nikschavan]

For now, enabling this for development mode only, but I believe this could be enabled by default

[matticbot]

This PR modifies the release build for the following Calypso Apps:

For info about this notification, see here: PCYsg-OT6-p2

• help-center
• notifications
• wpcom-block-editor

To test WordPress.com changes, run install-plugin.sh $pluginSlug add/odyssey-sourcemaps on your sandbox.

[matticbot]

This PR does not affect the size of JS and CSS bundles shipped to the user's browser.

Generated by performance advisor bot at iscalypsofastyet.com.

[Copilot]

Pull Request Overview

This PR aims to generate sourcemaps for the Odyssey app development builds, which will ease the debugging process.

• Introduces a conditional configuration for sourcemap generation based on the environment (development vs production).
• Updates the webpack configuration to use the new sourcemap setting.

Comments suppressed due to low confidence (1)

apps/odyssey-stats/webpack.config.js:25

• [nitpick] Consider renaming 'sourceMap' to 'devtoolConfig' or a similar name to clarify that it represents a webpack configuration value for the devtool option.

const sourceMap = isDevelopment ? 'source-map' : false;