Safely roll out new code with a feature flag system you build in 10 minutes
Beginner
10 min
English
Generate a complete, dependency-free feature flag implementation for your app without getting stuck on the boilerplate.
Steps
- Open ChatGPT or Claude and start a new chat.
- Copy the prompt template below and paste it into the chat.
- Replace {language} with your programming language (e.g., JavaScript, Python).
- Replace {framework} with your web framework (e.g., Express, FastAPI, React).
- Replace {flag_name} with the name of the feature you want to toggle (e.g., new_checkout_ui).
- Press Enter and wait for the AI to generate the code.
- Copy the generated code into your project and follow the AI's instructions to set the environment variable and test the flag.
Prompts to Use
You are a senior software engineer. Write a simple, dependency-free feature flag implementation for a {language} application using the {framework} framework. The feature flag should be controlled by an environment variable named FEATURE_FLAG_{flag_name}. Provide the core logic to check the flag, an example route or component using the flag, and instructions on how to test it. Output the code in a single markdown block with inline comments explaining the flag logic.
Tools Used
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