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Fix SASS mixed-declations deprecation warnings #190345

Closed
42 tasks done
jbudz opened this issue Aug 12, 2024 · 1 comment
Closed
42 tasks done

Fix SASS mixed-declations deprecation warnings #190345

jbudz opened this issue Aug 12, 2024 · 1 comment
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Team:SharedUX Team label for AppEx-SharedUX (formerly Global Experience)

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@jbudz
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jbudz commented Aug 12, 2024

A recent CSS SASS update caused 1.1MB of warning text in the dev console.

We will be muting the mixed-decls SASS warning due to the verbosity impacting DX. This issue is for tracking source code remediation of the deprecation warnings.

More info: https://sass-lang.com/d/mixed-decls

Tracking issues for codeowner teams have been created as follows:

Tasks

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  1. Team:SharedUX bug
    tsullivan
  2. Team:SharedUX
  3. Team:DataDiscovery chore impact:medium loe:small
    jughosta
  4. Team:DataDiscovery chore impact:medium loe:small
    jughosta
  5. Team:DataDiscovery chore good first issue impact:medium loe:small
    jughosta
  6. Team:DataDiscovery chore impact:medium loe:small
    jughosta
  7. Team:ESQL
    stratoula vadimkibana
  8. Team:Kibana Management
    sabarasaba
  9. Team:Presentation impact:low loe:small
    Heenawter
  10. Team:Presentation impact:low loe:small
    nreese
  11. Team:Presentation impact:low loe:small
    nreese
  12. Team:Presentation impact:low loe:small
    nreese
  13. Team:Security chore
    kc13greiner
  14. Team:Security chore
    kc13greiner
  15. Team:Security chore
    kc13greiner
  16. Team:Security chore
    kc13greiner
  17. Team:Security chore
    kc13greiner
  18. Team:Security chore
    kc13greiner
  19. Team:Security chore
    kc13greiner
  20. Team:Visualizations
  21. Team:Visualizations
  22. Team:Visualizations
  23. Team:Visualizations
  24. Team:Visualizations
  25. Team:Visualizations
  26. Team:Visualizations
  27. Team:Visualizations
  28. Team:Visualizations
  29. Team:Visualizations
  30. Team:Visualizations
  31. Team:Visualizations
  32. Team:Visualizations
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  34. Team:Visualizations
  35. Team:Visualizations
  36. Team:Visualizations
  37. Team:Visualizations
  38. Team:Visualizations
  39. Team:Visualizations
  40. Team:Visualizations
  41. :ml Team:ML good first issue v8.16.0
    rbrtj
  42. Team:ResponseOps
    adcoelho
@jbudz jbudz added the Team:SharedUX Team label for AppEx-SharedUX (formerly Global Experience) label Aug 12, 2024
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Pinging @elastic/appex-sharedux (Team:SharedUX)

@jbudz jbudz changed the title Fix SASS deprecation warnings Fix SASS mixed-declations deprecation warnings Aug 12, 2024
jbudz added a commit that referenced this issue Aug 12, 2024
These are impacting DX. Remediation will be tracked at
#190345.

## Testing

`node scripts/build_kibana_platform_plugins` and `yarn start` should not
log warnings about the `mixed-decls` sass rule
bryce-b pushed a commit to bryce-b/kibana that referenced this issue Aug 13, 2024
These are impacting DX. Remediation will be tracked at
elastic#190345.

## Testing

`node scripts/build_kibana_platform_plugins` and `yarn start` should not
log warnings about the `mixed-decls` sass rule
Ikuni17 added a commit that referenced this issue Sep 11, 2024
## Summary

This extends #190348 to the Storybook build because it is quite noisy
there as well. Example:


https://buildkite.com/elastic/kibana-pull-request/builds/233585#0191e2ad-bc90-45f1-b375-959f3fc22b98/268-294

Remediation will be tracked at
#190345

### Testing
The Storybook build step should not have SASS deprecation warnings.
jbudz added a commit that referenced this issue Oct 4, 2024
@jbudz jbudz closed this as completed Oct 4, 2024
kibanamachine pushed a commit to kibanamachine/kibana that referenced this issue Oct 4, 2024
tiansivive pushed a commit to tiansivive/kibana that referenced this issue Oct 7, 2024
mistic added a commit that referenced this issue Feb 14, 2025
### Summary

- Closes #89741

This PR contains the resulting work of a massive effort that ports our
on top bundler abstraction (called @kbn/optimizer) from Webpack v4 into
Webpack v5. It's essential in terms of long term maintenance since v4
was not receiving updates any longer but will also unblock some new
features that could be beneficial for our future DevEx endeavours.

Next you can find a small list of all the accomplished tasks on this
journey.

### Completed Tasks
- [x] Upgrade dependencies to match the ones on webpack v5
- [x] Fix null-loader usages
- [x] Fix raw-loader usages
- [x] Fix file-loader usages
- [x] Fix url-loader usages
- [x] Fix `@kbn/optimizer-webpack-helpers` to support webpack v5 
- [x] Adopt previous webpack v4 polyfill-all strategy with
node-polyfill-webpack-plugin
- [x] Fix theme-loader on @kbn/optimizer
- [x] Migrate configurations and ad-hoc loader options on all webpack
configs from v4 to v5
- [x] Fix @kbn/test jest resolver for file-loader cases
- [x] Migrate public-path loader on UiSharedDeps
- [x] Fix all usages of webpack-merge
- [x] Migrate BundleRemoteModule
- [x] Migrate BundleRemotesPlugin
- [x] Correctly migrate PopulateBundleCachePlugin
- [x] Correctly migrate BundleMetricsPlugin
- [x] Check if the profiling plugins still work (--profile flag)
- [x] Recover if possible the previous webpack v4 cacheGroup chunks
rename to something like `data.plugin.chunk.0.js`
- [x] Run `/ci` and make sure we get our first green CI, otherwise work
on the errors until we do
- [x] Profile and solve bottlenecks until we get a cold build
performance similar to the one we had on webpack v4 (`node
scripts/build_kibana_platform_plugins --no-cache`).
- [x] OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider
` flags
- [x] Add Webpack to Renovate config
- [x] Explore removing `NodePolyfillPlugin`
([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin)) and
add each polyfill needed individually per each webpack config to check
if we get smaller bundles. If we do it's better to go with the case by
case need approach instead of deploying a bunch of polyfills with
NodePolyfillPlugin. As another alternative, create a custom smaller
plugin with only the union of all needed polyfills.
- [x] Evaluate if we want to touch the resolutions on mainFields and
conditionNames
- [x] Understand why `@import 'src/core/public/mixins'` does not work
anymore (not a problem, we should use relative paths anyway but we want
to track why it changed from v4 to v5)
- [x] BUG: Child compilers are having errors hidden and/or changed from
error to warning
- [x] Fix license check for
[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is the
license for
[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).
This package is a dependency of
[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).
Artistic 2.0 license is [classified as
yellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)
and should only be used for dev dependencies.
- [x] Make sure `resourceQuery: { not: /raw/ }` is not necessary on
other webpack configs like storybook one
- [x] Find what is being wrongly removed by usedExports optimization;
hint: I believe it is identifying a lot of exports inside the sync entry
of plugins as unused exports and removing them. Then `__kbnBootstrap__`
can't be found
- [x] Rebalance @kbn/optimizer pickMaxWorkerCount
- [x] Re-open the issue to fix sass-warnings
[#190345](#190345) or downgrade
sass-loader to v10
- [x] Remove previous esm no parse rules
- [x] Confirm esm support is working
- [x] Confirm console override is needed
- [x] Confirm react prod builds on ui shared deps for distributable
- [x] Remove customization for
[xyflow](https://github.com/xyflow/xyflow) from webpack configs
- [x] Clean all the code
- [x] Make sure collected metrics from stats are still aligned with what
we were collecting before; also verify if the modules used for optimizer
caches etc are well generated (@kbn/node-libs-browser)
- [x] Fix watch performance

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
Co-authored-by: Brad White <brad.white@elastic.co>
mistic added a commit to mistic/kibana that referenced this issue Feb 14, 2025
### Summary

- Closes elastic#89741

This PR contains the resulting work of a massive effort that ports our
on top bundler abstraction (called @kbn/optimizer) from Webpack v4 into
Webpack v5. It's essential in terms of long term maintenance since v4
was not receiving updates any longer but will also unblock some new
features that could be beneficial for our future DevEx endeavours.

Next you can find a small list of all the accomplished tasks on this
journey.

### Completed Tasks
- [x] Upgrade dependencies to match the ones on webpack v5
- [x] Fix null-loader usages
- [x] Fix raw-loader usages
- [x] Fix file-loader usages
- [x] Fix url-loader usages
- [x] Fix `@kbn/optimizer-webpack-helpers` to support webpack v5
- [x] Adopt previous webpack v4 polyfill-all strategy with
node-polyfill-webpack-plugin
- [x] Fix theme-loader on @kbn/optimizer
- [x] Migrate configurations and ad-hoc loader options on all webpack
configs from v4 to v5
- [x] Fix @kbn/test jest resolver for file-loader cases
- [x] Migrate public-path loader on UiSharedDeps
- [x] Fix all usages of webpack-merge
- [x] Migrate BundleRemoteModule
- [x] Migrate BundleRemotesPlugin
- [x] Correctly migrate PopulateBundleCachePlugin
- [x] Correctly migrate BundleMetricsPlugin
- [x] Check if the profiling plugins still work (--profile flag)
- [x] Recover if possible the previous webpack v4 cacheGroup chunks
rename to something like `data.plugin.chunk.0.js`
- [x] Run `/ci` and make sure we get our first green CI, otherwise work
on the errors until we do
- [x] Profile and solve bottlenecks until we get a cold build
performance similar to the one we had on webpack v4 (`node
scripts/build_kibana_platform_plugins --no-cache`).
- [x] OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider
` flags
- [x] Add Webpack to Renovate config
- [x] Explore removing `NodePolyfillPlugin`
([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin)) and
add each polyfill needed individually per each webpack config to check
if we get smaller bundles. If we do it's better to go with the case by
case need approach instead of deploying a bunch of polyfills with
NodePolyfillPlugin. As another alternative, create a custom smaller
plugin with only the union of all needed polyfills.
- [x] Evaluate if we want to touch the resolutions on mainFields and
conditionNames
- [x] Understand why `@import 'src/core/public/mixins'` does not work
anymore (not a problem, we should use relative paths anyway but we want
to track why it changed from v4 to v5)
- [x] BUG: Child compilers are having errors hidden and/or changed from
error to warning
- [x] Fix license check for
[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is the
license for
[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).
This package is a dependency of
[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).
Artistic 2.0 license is [classified as
yellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)
and should only be used for dev dependencies.
- [x] Make sure `resourceQuery: { not: /raw/ }` is not necessary on
other webpack configs like storybook one
- [x] Find what is being wrongly removed by usedExports optimization;
hint: I believe it is identifying a lot of exports inside the sync entry
of plugins as unused exports and removing them. Then `__kbnBootstrap__`
can't be found
- [x] Rebalance @kbn/optimizer pickMaxWorkerCount
- [x] Re-open the issue to fix sass-warnings
[elastic#190345](elastic#190345) or downgrade
sass-loader to v10
- [x] Remove previous esm no parse rules
- [x] Confirm esm support is working
- [x] Confirm console override is needed
- [x] Confirm react prod builds on ui shared deps for distributable
- [x] Remove customization for
[xyflow](https://github.com/xyflow/xyflow) from webpack configs
- [x] Clean all the code
- [x] Make sure collected metrics from stats are still aligned with what
we were collecting before; also verify if the modules used for optimizer
caches etc are well generated (@kbn/node-libs-browser)
- [x] Fix watch performance

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
Co-authored-by: Brad White <brad.white@elastic.co>
(cherry picked from commit 203bc28)

# Conflicts:
#	packages/kbn-plugin-helpers/src/integration_tests/build.test.ts
mistic added a commit to mistic/kibana that referenced this issue Feb 14, 2025
### Summary

- Closes elastic#89741

This PR contains the resulting work of a massive effort that ports our
on top bundler abstraction (called @kbn/optimizer) from Webpack v4 into
Webpack v5. It's essential in terms of long term maintenance since v4
was not receiving updates any longer but will also unblock some new
features that could be beneficial for our future DevEx endeavours.

Next you can find a small list of all the accomplished tasks on this
journey.

### Completed Tasks
- [x] Upgrade dependencies to match the ones on webpack v5
- [x] Fix null-loader usages
- [x] Fix raw-loader usages
- [x] Fix file-loader usages
- [x] Fix url-loader usages
- [x] Fix `@kbn/optimizer-webpack-helpers` to support webpack v5
- [x] Adopt previous webpack v4 polyfill-all strategy with
node-polyfill-webpack-plugin
- [x] Fix theme-loader on @kbn/optimizer
- [x] Migrate configurations and ad-hoc loader options on all webpack
configs from v4 to v5
- [x] Fix @kbn/test jest resolver for file-loader cases
- [x] Migrate public-path loader on UiSharedDeps
- [x] Fix all usages of webpack-merge
- [x] Migrate BundleRemoteModule
- [x] Migrate BundleRemotesPlugin
- [x] Correctly migrate PopulateBundleCachePlugin
- [x] Correctly migrate BundleMetricsPlugin
- [x] Check if the profiling plugins still work (--profile flag)
- [x] Recover if possible the previous webpack v4 cacheGroup chunks
rename to something like `data.plugin.chunk.0.js`
- [x] Run `/ci` and make sure we get our first green CI, otherwise work
on the errors until we do
- [x] Profile and solve bottlenecks until we get a cold build
performance similar to the one we had on webpack v4 (`node
scripts/build_kibana_platform_plugins --no-cache`).
- [x] OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider
` flags
- [x] Add Webpack to Renovate config
- [x] Explore removing `NodePolyfillPlugin`
([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin)) and
add each polyfill needed individually per each webpack config to check
if we get smaller bundles. If we do it's better to go with the case by
case need approach instead of deploying a bunch of polyfills with
NodePolyfillPlugin. As another alternative, create a custom smaller
plugin with only the union of all needed polyfills.
- [x] Evaluate if we want to touch the resolutions on mainFields and
conditionNames
- [x] Understand why `@import 'src/core/public/mixins'` does not work
anymore (not a problem, we should use relative paths anyway but we want
to track why it changed from v4 to v5)
- [x] BUG: Child compilers are having errors hidden and/or changed from
error to warning
- [x] Fix license check for
[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is the
license for
[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).
This package is a dependency of
[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).
Artistic 2.0 license is [classified as
yellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)
and should only be used for dev dependencies.
- [x] Make sure `resourceQuery: { not: /raw/ }` is not necessary on
other webpack configs like storybook one
- [x] Find what is being wrongly removed by usedExports optimization;
hint: I believe it is identifying a lot of exports inside the sync entry
of plugins as unused exports and removing them. Then `__kbnBootstrap__`
can't be found
- [x] Rebalance @kbn/optimizer pickMaxWorkerCount
- [x] Re-open the issue to fix sass-warnings
[elastic#190345](elastic#190345) or downgrade
sass-loader to v10
- [x] Remove previous esm no parse rules
- [x] Confirm esm support is working
- [x] Confirm console override is needed
- [x] Confirm react prod builds on ui shared deps for distributable
- [x] Remove customization for
[xyflow](https://github.com/xyflow/xyflow) from webpack configs
- [x] Clean all the code
- [x] Make sure collected metrics from stats are still aligned with what
we were collecting before; also verify if the modules used for optimizer
caches etc are well generated (@kbn/node-libs-browser)
- [x] Fix watch performance

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
Co-authored-by: Brad White <brad.white@elastic.co>
(cherry picked from commit 203bc28)

# Conflicts:
#	.github/CODEOWNERS
#	package.json
#	packages/kbn-optimizer/limits.yml
#	packages/kbn-optimizer/src/worker/theme_loader.ts
#	src/platform/packages/private/kbn-ui-shared-deps-npm/webpack.config.js
#	src/platform/packages/private/kbn-ui-shared-deps-src/src/definitions.js
#	x-pack/test/security_solution_cypress/package.json
#	yarn.lock
mistic added a commit to mistic/kibana that referenced this issue Feb 14, 2025
### Summary

- Closes elastic#89741

This PR contains the resulting work of a massive effort that ports our
on top bundler abstraction (called @kbn/optimizer) from Webpack v4 into
Webpack v5. It's essential in terms of long term maintenance since v4
was not receiving updates any longer but will also unblock some new
features that could be beneficial for our future DevEx endeavours.

Next you can find a small list of all the accomplished tasks on this
journey.

### Completed Tasks
- [x] Upgrade dependencies to match the ones on webpack v5
- [x] Fix null-loader usages
- [x] Fix raw-loader usages
- [x] Fix file-loader usages
- [x] Fix url-loader usages
- [x] Fix `@kbn/optimizer-webpack-helpers` to support webpack v5
- [x] Adopt previous webpack v4 polyfill-all strategy with
node-polyfill-webpack-plugin
- [x] Fix theme-loader on @kbn/optimizer
- [x] Migrate configurations and ad-hoc loader options on all webpack
configs from v4 to v5
- [x] Fix @kbn/test jest resolver for file-loader cases
- [x] Migrate public-path loader on UiSharedDeps
- [x] Fix all usages of webpack-merge
- [x] Migrate BundleRemoteModule
- [x] Migrate BundleRemotesPlugin
- [x] Correctly migrate PopulateBundleCachePlugin
- [x] Correctly migrate BundleMetricsPlugin
- [x] Check if the profiling plugins still work (--profile flag)
- [x] Recover if possible the previous webpack v4 cacheGroup chunks
rename to something like `data.plugin.chunk.0.js`
- [x] Run `/ci` and make sure we get our first green CI, otherwise work
on the errors until we do
- [x] Profile and solve bottlenecks until we get a cold build
performance similar to the one we had on webpack v4 (`node
scripts/build_kibana_platform_plugins --no-cache`).
- [x] OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider
` flags
- [x] Add Webpack to Renovate config
- [x] Explore removing `NodePolyfillPlugin`
([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin)) and
add each polyfill needed individually per each webpack config to check
if we get smaller bundles. If we do it's better to go with the case by
case need approach instead of deploying a bunch of polyfills with
NodePolyfillPlugin. As another alternative, create a custom smaller
plugin with only the union of all needed polyfills.
- [x] Evaluate if we want to touch the resolutions on mainFields and
conditionNames
- [x] Understand why `@import 'src/core/public/mixins'` does not work
anymore (not a problem, we should use relative paths anyway but we want
to track why it changed from v4 to v5)
- [x] BUG: Child compilers are having errors hidden and/or changed from
error to warning
- [x] Fix license check for
[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is the
license for
[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).
This package is a dependency of
[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).
Artistic 2.0 license is [classified as
yellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)
and should only be used for dev dependencies.
- [x] Make sure `resourceQuery: { not: /raw/ }` is not necessary on
other webpack configs like storybook one
- [x] Find what is being wrongly removed by usedExports optimization;
hint: I believe it is identifying a lot of exports inside the sync entry
of plugins as unused exports and removing them. Then `__kbnBootstrap__`
can't be found
- [x] Rebalance @kbn/optimizer pickMaxWorkerCount
- [x] Re-open the issue to fix sass-warnings
[elastic#190345](elastic#190345) or downgrade
sass-loader to v10
- [x] Remove previous esm no parse rules
- [x] Confirm esm support is working
- [x] Confirm console override is needed
- [x] Confirm react prod builds on ui shared deps for distributable
- [x] Remove customization for
[xyflow](https://github.com/xyflow/xyflow) from webpack configs
- [x] Clean all the code
- [x] Make sure collected metrics from stats are still aligned with what
we were collecting before; also verify if the modules used for optimizer
caches etc are well generated (@kbn/node-libs-browser)
- [x] Fix watch performance

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
Co-authored-by: Brad White <brad.white@elastic.co>
(cherry picked from commit 203bc28)

# Conflicts:
#	.github/CODEOWNERS
#	package.json
#	packages/kbn-optimizer/limits.yml
#	packages/kbn-optimizer/src/worker/theme_loader.ts
#	packages/kbn-plugin-helpers/src/integration_tests/build.test.ts
#	src/platform/packages/private/kbn-ui-shared-deps-npm/webpack.config.js
#	src/platform/packages/private/kbn-ui-shared-deps-src/src/definitions.js
#	x-pack/test/security_solution_cypress/package.json
#	yarn.lock
mistic added a commit to mistic/kibana that referenced this issue Feb 14, 2025
### Summary

- Closes elastic#89741

This PR contains the resulting work of a massive effort that ports our
on top bundler abstraction (called @kbn/optimizer) from Webpack v4 into
Webpack v5. It's essential in terms of long term maintenance since v4
was not receiving updates any longer but will also unblock some new
features that could be beneficial for our future DevEx endeavours.

Next you can find a small list of all the accomplished tasks on this
journey.

### Completed Tasks
- [x] Upgrade dependencies to match the ones on webpack v5
- [x] Fix null-loader usages
- [x] Fix raw-loader usages
- [x] Fix file-loader usages
- [x] Fix url-loader usages
- [x] Fix `@kbn/optimizer-webpack-helpers` to support webpack v5
- [x] Adopt previous webpack v4 polyfill-all strategy with
node-polyfill-webpack-plugin
- [x] Fix theme-loader on @kbn/optimizer
- [x] Migrate configurations and ad-hoc loader options on all webpack
configs from v4 to v5
- [x] Fix @kbn/test jest resolver for file-loader cases
- [x] Migrate public-path loader on UiSharedDeps
- [x] Fix all usages of webpack-merge
- [x] Migrate BundleRemoteModule
- [x] Migrate BundleRemotesPlugin
- [x] Correctly migrate PopulateBundleCachePlugin
- [x] Correctly migrate BundleMetricsPlugin
- [x] Check if the profiling plugins still work (--profile flag)
- [x] Recover if possible the previous webpack v4 cacheGroup chunks
rename to something like `data.plugin.chunk.0.js`
- [x] Run `/ci` and make sure we get our first green CI, otherwise work
on the errors until we do
- [x] Profile and solve bottlenecks until we get a cold build
performance similar to the one we had on webpack v4 (`node
scripts/build_kibana_platform_plugins --no-cache`).
- [x] OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider
` flags
- [x] Add Webpack to Renovate config
- [x] Explore removing `NodePolyfillPlugin`
([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin)) and
add each polyfill needed individually per each webpack config to check
if we get smaller bundles. If we do it's better to go with the case by
case need approach instead of deploying a bunch of polyfills with
NodePolyfillPlugin. As another alternative, create a custom smaller
plugin with only the union of all needed polyfills.
- [x] Evaluate if we want to touch the resolutions on mainFields and
conditionNames
- [x] Understand why `@import 'src/core/public/mixins'` does not work
anymore (not a problem, we should use relative paths anyway but we want
to track why it changed from v4 to v5)
- [x] BUG: Child compilers are having errors hidden and/or changed from
error to warning
- [x] Fix license check for
[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is the
license for
[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).
This package is a dependency of
[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).
Artistic 2.0 license is [classified as
yellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)
and should only be used for dev dependencies.
- [x] Make sure `resourceQuery: { not: /raw/ }` is not necessary on
other webpack configs like storybook one
- [x] Find what is being wrongly removed by usedExports optimization;
hint: I believe it is identifying a lot of exports inside the sync entry
of plugins as unused exports and removing them. Then `__kbnBootstrap__`
can't be found
- [x] Rebalance @kbn/optimizer pickMaxWorkerCount
- [x] Re-open the issue to fix sass-warnings
[elastic#190345](elastic#190345) or downgrade
sass-loader to v10
- [x] Remove previous esm no parse rules
- [x] Confirm esm support is working
- [x] Confirm console override is needed
- [x] Confirm react prod builds on ui shared deps for distributable
- [x] Remove customization for
[xyflow](https://github.com/xyflow/xyflow) from webpack configs
- [x] Clean all the code
- [x] Make sure collected metrics from stats are still aligned with what
we were collecting before; also verify if the modules used for optimizer
caches etc are well generated (@kbn/node-libs-browser)
- [x] Fix watch performance

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
Co-authored-by: Brad White <brad.white@elastic.co>
(cherry picked from commit 203bc28)

# Conflicts:
#	.github/CODEOWNERS
#	package.json
#	packages/kbn-monaco/BUILD.bazel
#	packages/kbn-node-libs-browser-webpack-plugin/jest.config.js
#	packages/kbn-optimizer/limits.yml
#	packages/kbn-optimizer/src/worker/theme_loader.ts
#	packages/kbn-plugin-helpers/src/integration_tests/build.test.ts
#	packages/kbn-ui-shared-deps-npm/BUILD.bazel
#	packages/kbn-ui-shared-deps-npm/webpack.config.js
#	packages/kbn-ui-shared-deps-src/src/definitions.js
#	src/platform/packages/private/kbn-ui-shared-deps-src/BUILD.bazel
#	src/platform/plugins/shared/discover/.storybook/discover.webpack.ts
#	src/platform/plugins/shared/discover/.storybook/main.ts
#	src/plugins/discover/.storybook/discover.webpack.ts
#	src/plugins/discover/.storybook/main.js
#	src/plugins/discover/.storybook/main.ts
#	tsconfig.base.json
#	x-pack/platform/plugins/shared/fleet/package.json
#	x-pack/platform/plugins/shared/osquery/package.json
#	x-pack/plugins/canvas/shareable_runtime/webpack.config.js
#	x-pack/plugins/canvas/storybook/canvas_webpack.ts
#	x-pack/plugins/security_solution/package.json
#	x-pack/solutions/observability/plugins/apm/ftr_e2e/package.json
#	x-pack/solutions/observability/plugins/profiling/e2e/package.json
#	x-pack/solutions/security/packages/kbn-cloud-security-posture/graph/.storybook/main.ts
#	x-pack/test/security_solution_cypress/package.json
#	yarn.lock
mistic added a commit to mistic/kibana that referenced this issue Feb 14, 2025
### Summary

- Closes elastic#89741

This PR contains the resulting work of a massive effort that ports our
on top bundler abstraction (called @kbn/optimizer) from Webpack v4 into
Webpack v5. It's essential in terms of long term maintenance since v4
was not receiving updates any longer but will also unblock some new
features that could be beneficial for our future DevEx endeavours.

Next you can find a small list of all the accomplished tasks on this
journey.

### Completed Tasks
- [x] Upgrade dependencies to match the ones on webpack v5
- [x] Fix null-loader usages
- [x] Fix raw-loader usages
- [x] Fix file-loader usages
- [x] Fix url-loader usages
- [x] Fix `@kbn/optimizer-webpack-helpers` to support webpack v5
- [x] Adopt previous webpack v4 polyfill-all strategy with
node-polyfill-webpack-plugin
- [x] Fix theme-loader on @kbn/optimizer
- [x] Migrate configurations and ad-hoc loader options on all webpack
configs from v4 to v5
- [x] Fix @kbn/test jest resolver for file-loader cases
- [x] Migrate public-path loader on UiSharedDeps
- [x] Fix all usages of webpack-merge
- [x] Migrate BundleRemoteModule
- [x] Migrate BundleRemotesPlugin
- [x] Correctly migrate PopulateBundleCachePlugin
- [x] Correctly migrate BundleMetricsPlugin
- [x] Check if the profiling plugins still work (--profile flag)
- [x] Recover if possible the previous webpack v4 cacheGroup chunks
rename to something like `data.plugin.chunk.0.js`
- [x] Run `/ci` and make sure we get our first green CI, otherwise work
on the errors until we do
- [x] Profile and solve bottlenecks until we get a cold build
performance similar to the one we had on webpack v4 (`node
scripts/build_kibana_platform_plugins --no-cache`).
- [x] OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider
` flags
- [x] Add Webpack to Renovate config
- [x] Explore removing `NodePolyfillPlugin`
([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin)) and
add each polyfill needed individually per each webpack config to check
if we get smaller bundles. If we do it's better to go with the case by
case need approach instead of deploying a bunch of polyfills with
NodePolyfillPlugin. As another alternative, create a custom smaller
plugin with only the union of all needed polyfills.
- [x] Evaluate if we want to touch the resolutions on mainFields and
conditionNames
- [x] Understand why `@import 'src/core/public/mixins'` does not work
anymore (not a problem, we should use relative paths anyway but we want
to track why it changed from v4 to v5)
- [x] BUG: Child compilers are having errors hidden and/or changed from
error to warning
- [x] Fix license check for
[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is the
license for
[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).
This package is a dependency of
[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).
Artistic 2.0 license is [classified as
yellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)
and should only be used for dev dependencies.
- [x] Make sure `resourceQuery: { not: /raw/ }` is not necessary on
other webpack configs like storybook one
- [x] Find what is being wrongly removed by usedExports optimization;
hint: I believe it is identifying a lot of exports inside the sync entry
of plugins as unused exports and removing them. Then `__kbnBootstrap__`
can't be found
- [x] Rebalance @kbn/optimizer pickMaxWorkerCount
- [x] Re-open the issue to fix sass-warnings
[elastic#190345](elastic#190345) or downgrade
sass-loader to v10
- [x] Remove previous esm no parse rules
- [x] Confirm esm support is working
- [x] Confirm console override is needed
- [x] Confirm react prod builds on ui shared deps for distributable
- [x] Remove customization for
[xyflow](https://github.com/xyflow/xyflow) from webpack configs
- [x] Clean all the code
- [x] Make sure collected metrics from stats are still aligned with what
we were collecting before; also verify if the modules used for optimizer
caches etc are well generated (@kbn/node-libs-browser)
- [x] Fix watch performance

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
Co-authored-by: Brad White <brad.white@elastic.co>
(cherry picked from commit 203bc28)

# Conflicts:
#	.github/CODEOWNERS
#	package.json
#	packages/kbn-eslint-plugin-imports/src/rules/no_group_crossing_imports.ts
#	packages/kbn-monaco/BUILD.bazel
#	packages/kbn-node-libs-browser-webpack-plugin/jest.config.js
#	packages/kbn-optimizer/limits.yml
#	packages/kbn-optimizer/src/worker/theme_loader.ts
#	packages/kbn-optimizer/src/worker/webpack.config.ts
#	packages/kbn-plugin-helpers/src/integration_tests/build.test.ts
#	packages/kbn-storybook/src/webpack.config.ts
#	packages/kbn-ui-shared-deps-npm/BUILD.bazel
#	packages/kbn-ui-shared-deps-npm/webpack.config.js
#	packages/kbn-ui-shared-deps-src/src/definitions.js
#	renovate.json
#	src/platform/packages/private/kbn-ui-shared-deps-src/BUILD.bazel
#	src/platform/plugins/shared/discover/.storybook/discover.webpack.ts
#	src/platform/plugins/shared/discover/.storybook/main.ts
#	src/plugins/discover/.storybook/discover.webpack.ts
#	src/plugins/discover/.storybook/main.js
#	src/plugins/discover/.storybook/main.ts
#	tsconfig.base.json
#	x-pack/platform/plugins/shared/fleet/package.json
#	x-pack/platform/plugins/shared/osquery/package.json
#	x-pack/plugins/canvas/shareable_runtime/webpack.config.js
#	x-pack/plugins/canvas/storybook/canvas_webpack.ts
#	x-pack/plugins/security_solution/package.json
#	x-pack/solutions/observability/plugins/apm/ftr_e2e/package.json
#	x-pack/solutions/observability/plugins/profiling/e2e/package.json
#	x-pack/solutions/security/packages/kbn-cloud-security-posture/graph/.storybook/main.ts
#	x-pack/test/security_solution_cypress/package.json
#	yarn.lock
mistic added a commit that referenced this issue Feb 14, 2025
# Backport

This will backport the following commits from `main` to `9.0`:
- [chore(NA): upgrade to webpack 5
(#191106)](#191106)

<!--- Backport version: 9.6.4 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Tiago
Costa","email":"tiago.costa@elastic.co"},"sourceCommit":{"committedDate":"2025-02-14T03:01:36Z","message":"chore(NA):
upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
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on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
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Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
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Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
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OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1","branchLabelMapping":{"^v9.1.0$":"main","^v8.19.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["chore","Team:Operations","release_note:skip","Team:Fleet","v9.0.0","backport:all-open","ci:build-webpack-bundle-analyzer","Team:obs-ux-infra_services","v9.1.0"],"title":"chore(NA):
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#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1"}},"sourceBranch":"main","suggestedTargetBranches":["9.0"],"targetPullRequestStates":[{"branch":"9.0","label":"v9.0.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"main","label":"v9.1.0","branchLabelMappingKey":"^v9.1.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/191106","number":191106,"mergeCommit":{"message":"chore(NA):
upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1"}}]}]
BACKPORT-->
mistic added a commit that referenced this issue Feb 14, 2025
# Backport

This will backport the following commits from `main` to `8.x`:
- [chore(NA): upgrade to webpack 5
(#191106)](#191106)

<!--- Backport version: 9.6.4 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Tiago
Costa","email":"tiago.costa@elastic.co"},"sourceCommit":{"committedDate":"2025-02-14T03:01:36Z","message":"chore(NA):
upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1","branchLabelMapping":{"^v9.1.0$":"main","^v8.19.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["chore","Team:Operations","release_note:skip","Team:Fleet","v9.0.0","backport:all-open","ci:build-webpack-bundle-analyzer","Team:obs-ux-infra_services","v9.1.0"],"title":"chore(NA):
upgrade to webpack
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upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"9.0","label":"v9.0.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"url":"https://github.com/elastic/kibana/pull/211145","number":211145,"state":"OPEN"},{"branch":"main","label":"v9.1.0","branchLabelMappingKey":"^v9.1.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/191106","number":191106,"mergeCommit":{"message":"chore(NA):
upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1"}}]}]
BACKPORT-->

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
mistic added a commit that referenced this issue Feb 14, 2025
# Backport

This will backport the following commits from `main` to `8.18`:
- [chore(NA): upgrade to webpack 5
(#191106)](#191106)

<!--- Backport version: 9.6.4 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Tiago
Costa","email":"tiago.costa@elastic.co"},"sourceCommit":{"committedDate":"2025-02-14T03:01:36Z","message":"chore(NA):
upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1","branchLabelMapping":{"^v9.1.0$":"main","^v8.19.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["chore","Team:Operations","release_note:skip","Team:Fleet","v9.0.0","backport:all-open","ci:build-webpack-bundle-analyzer","Team:obs-ux-infra_services","v9.1.0"],"title":"chore(NA):
upgrade to webpack
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upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"9.0","label":"v9.0.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"url":"https://github.com/elastic/kibana/pull/211145","number":211145,"state":"OPEN"},{"branch":"main","label":"v9.1.0","branchLabelMappingKey":"^v9.1.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/191106","number":191106,"mergeCommit":{"message":"chore(NA):
upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1"}},{"url":"https://github.com/elastic/kibana/pull/211146","number":211146,"branch":"8.x","state":"OPEN"}]}]
BACKPORT-->

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
mistic added a commit that referenced this issue Feb 19, 2025
# Backport

This will backport the following commits from `main` to `8.17`:
- [chore(NA): upgrade to webpack 5
(#191106)](#191106)

<!--- Backport version: 9.6.4 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Tiago
Costa","email":"tiago.costa@elastic.co"},"sourceCommit":{"committedDate":"2025-02-14T03:01:36Z","message":"chore(NA):
upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
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cacheGroup chunks\r\nrename to something like
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first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1","branchLabelMapping":{"^v9.1.0$":"main","^v8.19.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["chore","Team:Operations","release_note:skip","Team:Fleet","v9.0.0","backport:all-open","ci:build-webpack-bundle-analyzer","Team:obs-ux-infra_services","v9.1.0"],"title":"chore(NA):
upgrade to webpack
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upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"9.0","label":"v9.0.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"url":"https://github.com/elastic/kibana/pull/211145","number":211145,"state":"OPEN"},{"branch":"main","label":"v9.1.0","branchLabelMappingKey":"^v9.1.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/191106","number":191106,"mergeCommit":{"message":"chore(NA):
upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1"}},{"url":"https://github.com/elastic/kibana/pull/211146","number":211146,"branch":"8.x","state":"OPEN"},{"url":"https://github.com/elastic/kibana/pull/211147","number":211147,"branch":"8.18","state":"OPEN"}]}]
BACKPORT-->

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
mistic added a commit that referenced this issue Feb 19, 2025
# Backport

This will backport the following commits from `main` to `8.16`:
- [chore(NA): upgrade to webpack 5
(#191106)](#191106)

<!--- Backport version: 9.6.4 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Tiago
Costa","email":"tiago.costa@elastic.co"},"sourceCommit":{"committedDate":"2025-02-14T03:01:36Z","message":"chore(NA):
upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1","branchLabelMapping":{"^v9.1.0$":"main","^v8.19.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["chore","Team:Operations","release_note:skip","Team:Fleet","v9.0.0","backport:all-open","ci:build-webpack-bundle-analyzer","Team:obs-ux-infra_services","v9.1.0"],"title":"chore(NA):
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5","number":191106,"url":"https://github.com/elastic/kibana/pull/191106","mergeCommit":{"message":"chore(NA):
upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"9.0","label":"v9.0.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"url":"https://github.com/elastic/kibana/pull/211145","number":211145,"state":"OPEN"},{"branch":"main","label":"v9.1.0","branchLabelMappingKey":"^v9.1.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/191106","number":191106,"mergeCommit":{"message":"chore(NA):
upgrade to webpack 5 (#191106)\n\n### Summary\r\n\r\n- Closes
#89741\r\n\r\nThis PR contains the resulting work of a massive effort
that ports our\r\non top bundler abstraction (called @kbn/optimizer)
from Webpack v4 into\r\nWebpack v5. It's essential in terms of long term
maintenance since v4\r\nwas not receiving updates any longer but will
also unblock some new\r\nfeatures that could be beneficial for our
future DevEx endeavours.\r\n\r\nNext you can find a small list of all
the accomplished tasks on this\r\njourney.\r\n\r\n### Completed
Tasks\r\n- [x] Upgrade dependencies to match the ones on webpack v5\r\n-
[x] Fix null-loader usages\r\n- [x] Fix raw-loader usages\r\n- [x] Fix
file-loader usages\r\n- [x] Fix url-loader usages\r\n- [x] Fix
`@kbn/optimizer-webpack-helpers` to support webpack v5 \r\n- [x] Adopt
previous webpack v4 polyfill-all strategy
with\r\nnode-polyfill-webpack-plugin\r\n- [x] Fix theme-loader on
@kbn/optimizer\r\n- [x] Migrate configurations and ad-hoc loader options
on all webpack\r\nconfigs from v4 to v5\r\n- [x] Fix @kbn/test jest
resolver for file-loader cases\r\n- [x] Migrate public-path loader on
UiSharedDeps\r\n- [x] Fix all usages of webpack-merge\r\n- [x] Migrate
BundleRemoteModule\r\n- [x] Migrate BundleRemotesPlugin\r\n- [x]
Correctly migrate PopulateBundleCachePlugin\r\n- [x] Correctly migrate
BundleMetricsPlugin\r\n- [x] Check if the profiling plugins still work
(--profile flag)\r\n- [x] Recover if possible the previous webpack v4
cacheGroup chunks\r\nrename to something like
`data.plugin.chunk.0.js`\r\n- [x] Run `/ci` and make sure we get our
first green CI, otherwise work\r\non the errors until we do\r\n- [x]
Profile and solve bottlenecks until we get a cold build\r\nperformance
similar to the one we had on webpack v4
(`node\r\nscripts/build_kibana_platform_plugins --no-cache`).\r\n- [x]
OpenSSL Legacy Warnings: try to remove `--openssl-legacy-provider\r\n`
flags\r\n- [x] Add Webpack to Renovate config\r\n- [x] Explore removing
`NodePolyfillPlugin`\r\n([here](https://www.npmjs.com/package/node-polyfill-webpack-plugin))
and\r\nadd each polyfill needed individually per each webpack config to
check\r\nif we get smaller bundles. If we do it's better to go with the
case by\r\ncase need approach instead of deploying a bunch of polyfills
with\r\nNodePolyfillPlugin. As another alternative, create a custom
smaller\r\nplugin with only the union of all needed polyfills.\r\n- [x]
Evaluate if we want to touch the resolutions on mainFields
and\r\nconditionNames\r\n- [x] Understand why `@import
'src/core/public/mixins'` does not work\r\nanymore (not a problem, we
should use relative paths anyway but we want\r\nto track why it changed
from v4 to v5)\r\n- [x] BUG: Child compilers are having errors hidden
and/or changed from\r\nerror to warning\r\n- [x] Fix license check
for\r\n[Artistic-2.0](https://spdx.org/licenses/Artistic-2.0.html) is
the\r\nlicense
for\r\n[domain-browser](https://github.com/bevry/domain-browser?tab=License-1-ov-file).\r\nThis
package is a dependency
of\r\n[NodePolyfillPlugin](https://www.npmjs.com/package/node-polyfill-webpack-plugin).\r\nArtistic
2.0 license is [classified
as\r\nyellow](https://github.com/elastic/open-source/blob/main/elastic-product-policy.md#yellow-list)\r\nand
should only be used for dev dependencies.\r\n- [x] Make sure
`resourceQuery: { not: /raw/ }` is not necessary on\r\nother webpack
configs like storybook one\r\n- [x] Find what is being wrongly removed
by usedExports optimization;\r\nhint: I believe it is identifying a lot
of exports inside the sync entry\r\nof plugins as unused exports and
removing them. Then `__kbnBootstrap__`\r\ncan't be found\r\n- [x]
Rebalance @kbn/optimizer pickMaxWorkerCount\r\n- [x] Re-open the issue
to fix
sass-warnings\r\n[#190345](#190345)
or downgrade\r\nsass-loader to v10\r\n- [x] Remove previous esm no parse
rules\r\n- [x] Confirm esm support is working\r\n- [x] Confirm console
override is needed\r\n- [x] Confirm react prod builds on ui shared deps
for distributable\r\n- [x] Remove customization
for\r\n[xyflow](https://github.com/xyflow/xyflow) from webpack
configs\r\n- [x] Clean all the code\r\n- [x] Make sure collected metrics
from stats are still aligned with what\r\nwe were collecting before;
also verify if the modules used for optimizer\r\ncaches etc are well
generated (@kbn/node-libs-browser)\r\n- [x] Fix watch
performance\r\n\r\n---------\r\n\r\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>\r\nCo-authored-by:
Brad White
<brad.white@elastic.co>","sha":"203bc284781cc830049b3f7948c8fcafa8b7d9a1"}},{"url":"https://github.com/elastic/kibana/pull/211146","number":211146,"branch":"8.x","state":"OPEN"},{"url":"https://github.com/elastic/kibana/pull/211147","number":211147,"branch":"8.18","state":"OPEN"},{"url":"https://github.com/elastic/kibana/pull/211148","number":211148,"branch":"8.17","state":"OPEN"}]}]
BACKPORT-->

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
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