Ref: https://github.com/nodejs/node/pull/11349 Used in: ``` rai-0.1.12.tgz/lib/mockup.js:75: pair = tlslib.createSecurePair(sslcontext, false); rai-0.1.12.tgz/lib/starttls.js:40: pair = require('tls').createSecurePair(sslcontext, true); ``` See also https://github.com/andris9/rai/issues/8. See e.g. https://github.com/sidorares/node-mysql2/pull/367 for a feature detection example.