Despite the
pressure from Google and even
criticism from Tim Berners-Lee , Facebook persistently refuses to provide its users with the function of exporting a social graph, that is, information about all friends on the network. She receives well-deserved accusations that captures users in the "information trap" from which they can not escape.
But if you really need, then there is a way out. Some unknown developer
dimator has released an extension for Google Chrome
Facebook Doesn’t Own My Friends (
source code ), which allows you to easily export your Facebook friends list to a CSV file or directly to the Gmail contact list (a new group called “Imported from Facebook” is being created).
The developer emphasizes that he is not related to Facebook or Google, and the extension he created does not contradict the Facebook user agreement. In fact, the extension only automates the work that the user can do manually by copying the names and email addresses of friends using copy-paste.

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The lines 101-103 in background.html for fb-exporter.crx deserve special attention.
if (request.pissOffZuckerberg) {
chrome.tabs.sendRequest(fb_tab, {pissOffZuckerberg: 1});
}
PS After the extension information
was published on TechCrunch nine hours ago, messages appeared that the script had stopped working. Apparently, Facebook was able to somehow block it.