How protect chrome extension

Question

Chrome extension is packed to zip archive. After setup it is installed on folder and user can access to it. Also he can rewrite extension and even clone to new extension.

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Answer 1

In case you have some proprietary code (e.g. special algo you want to keep safe etc') and you are targeting Chrome - I would suggest to go with Native Client. Nacl let you run C/C++ code in your browser. It's very powerful and you can be sure it will be very hard for someone to pick into your binary.