gitlab-org--gitlab-foss/doc/development/new_fe_guide/tips.md

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---
stage: none
group: Development
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
---
2018-03-07 13:32:38 -05:00
# Tips
## Clearing production compiled assets
To clear production compiled assets created with `yarn webpack-prod` you can run:
```shell
yarn clean
```
## Creating feature flags in development
The process for creating a feature flag is the same as [enabling a feature flag in development](../feature_flags/development.md#enabling-a-feature-flag-locally-in-development).
Your feature flag can now be:
- [Made available to the frontend](../feature_flags/development.md#frontend) via the `gon`
- Queried in [tests](../feature_flags/development.md#feature-flags-in-tests)
- Queried in HAML templates and Ruby files via the `Feature.enabled?(:my_shiny_new_feature_flag)` method
### More on feature flags
- [Deleting a feature flag](../../api/features.md#delete-a-feature)
- [Manage feature flags](../feature_flags/process.md)
- [Feature flags API](../../api/features.md)
## Running tests locally
This can be done as outlined by the [frontend testing guide](../testing_guide/frontend_testing.md#running-frontend-tests).