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---
stage: none
group: Development
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# Tips
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## Clearing production compiled assets
To clear production compiled assets created with `yarn webpack-prod` you can run:
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```shell
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yarn clean
```
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## Creating feature flags in development
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The process for creating a feature flag is the same as [enabling a feature flag in development ](../feature_flags/index.md#enabling-a-feature-flag-locally-in-development ).
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Your feature flag can now be:
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- [Made available to the frontend ](../feature_flags/index.md#frontend ) via the `gon`
- Queried in [tests ](../feature_flags/index.md#feature-flags-in-tests )
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- Queried in HAML templates and Ruby files via the `Feature.enabled?(:my_shiny_new_feature_flag)` method
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### More on feature flags
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- [Deleting a feature flag ](../../api/features.md#delete-a-feature )
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- [Manage feature flags ](https://about.gitlab.com/handbook/product-development-flow/feature-flag-lifecycle/ )
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- [Feature flags API ](../../api/features.md )
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## Running tests locally
This can be done as outlined by the [frontend testing guide ](../testing_guide/frontend_testing.md#running-frontend-tests ).
