Move Google API key?

[gabrieldeal]

"GitGuardian detected an API key from Google in the following commit from gabrielmdeal/yellowleaf-trips pushed at 2018-12-11T02:55:25Z."

https://developers.google.com/maps/api-key-best-practices

I am not sure how this is supposed to be more secure given that it needs to be present in client-side Javascript.

[gabrieldeal]

On apps that use Maps Web Service APIs, use the following methods to safeguard your apps and API keys:

Do not embed API keys directly in code. Instead of directly embedding API keys in you application's code, put them in environment variables or in include files that are stored separately from the bulk of your code—outside the source repository of your application. Then, if you share your code, the API keys will not be included in the shared files.
Do not store API keys in files inside your application's source tree. If you store API keys in files, keep the files outside your application's source tree to help ensure your keys do not end up in your source code control system. This is particularly important if you use a public source code management system such as GitHub.
Review your code before publicly releasing it. Ensure that your code does not contain API keys or any other private information before you make your code publicly available.