unicode - node.js - how to recognize invalid UTF-8? -

unicode - node.js - how to recognize invalid UTF-8? -

i'm implementing back upwards of utf-8 , i'm facing issue. i'd error out on receiving invalid utf-8. okay:

var utf8 = require('utf8'); seek { var result = utf8.decode(req.params.container); console.log('a valid utf8 (from ', req.params.container , '): ', result); self.bucket_name = req.params.container; next(); } grab (e) { console.log('invalid utf-8 (', req.params.container, '): ', e); res.statuscode = 412; res.end('invalid utf8 or contains null'); } { ; }

and says unicode string invalid: 嘈嘈Ωऀ鐌鐌㜄鐊툏㜃댋ं蔈㜅

but python libraries string valid unicode. question two-fold: (1) valid utf-8, , (2) how determine if string or not valid utf-8, in node.js?

node.js unicode utf-8