hash update fail

[makc]

node v5.11 on mac:

$ node
> var sha256 = require('crypto').createHash('sha256');
undefined
> sha256.update('1')
Hash { _handle: {}, _options: undefined }
> sha256.digest('hex')
'6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b'
> sha256.update('2')
TypeError: HashUpdate fail
    at TypeError (native)
    at Hash.update (crypto.js:70:16)
    at repl:1:8
    at REPLServer.defaultEval (repl.js:270:27)
    at bound (domain.js:287:14)
    at REPLServer.runBound [as eval] (domain.js:300:12)
    at REPLServer.<anonymous> (repl.js:439:10)
    at emitOne (events.js:95:20)
    at REPLServer.emit (events.js:182:7)
    at REPLServer.Interface._onLine (readline.js:211:10)
> 

the docs say, "This can be called many times with new data as it is streamed", apparently not?

[makc]

the docs also say, "The Hash object can not be used again after hash.digest() method has been called. Multiple calls will cause an error to be thrown" 💩