listObjects for bucket with "folders" results in TypeError: xmlobj.CommonPrefixes.forEach is not a function

When we call client.listObjects("someBucketName") for a bucket that contains a “folder” (i.e. an object with a trailing slash), the callback actually hangs! When we hack xml-parsers.parseListObjectsQuery to wrap the body with a try/catch, we see:

TypeError: xmlobj.CommonPrefixes.forEach is not a function
    at parseListObjects (xml-parsers.js:382)

further modifying that function to print out xmlobj.CommonPrefixes gives:

{Prefix: "f1/"}

We see this in 7.0.17.

With 7.0.18, the client still hangs, but now the hanging exception is:

TypeError: xmlobj.Contents.forEach is not a function
    at parseListObjects (xml-parsers.js:388)

I suspect that 7.0.18 just has more bugs, because CommonPrefixes is still not forEach-able, in 7.0.18; it’s still not an array:

{Prefix: "f1/"}

Related? https://github.com/minio/minio-js/issues/886

[starpit]

I just checked, and this seems to be fixed on master. Can we expect a release on npm sometime soon? Thanks.

[gitzjp]

I just checked, and this seems to be fixed on master. Can we expect a release on npm sometime soon? Thanks.

I had the same problem and i solved it using listObjectsV2().