mongod changed from V8 to SpiderMonkey .
interpreterVersion() method in the
mongo shell and the
In MongoDB 3.2, this will appear as
SpiderMonkey brings with it increased support for features defined in the 6th edition of ECMAScript , abbreviated as ES6. ES6 adds many new language features, including:
Changes to the
undefined values intact if saved into a collection. Previously, the
mongo shell would convert
undefined values into
MongoDB 3.2 also adds the
mongo shell has a corresponding
Removed Non-Standard V8 Features
SpiderMonkey does not allow the non-standard
Error.captureStackTrace() function that prior versions of MongoDB supported. If you must record stack traces, you can capture the
Error().stack property as a workaround.