eval returns undefined if the string starts with a comment

[fredreichbier]

(coffeescript)

yaml = require "yaml"

data1 = yaml.eval """
# This is a comment.
Hey: There
"""
data2 = yaml.eval """
Hey: There
"""
console.log data1
console.log data2

gives:

undefined
{ Hey: 'There' }

Not sure if that's expected behaviour. I'll probably have a look into the code for that. ;)

[cristobal]

This is not the expected behaviour added some yml files from another project and parsed with other yaml parses it works fine. As far as it seems # comments should be possible to add anywhere in the document without it interfering with the rest of the data in the yaml document. See http://www.yaml.org/spec/1.0/#id2489959

[nathankleyn]

Having this very same issue, took a while to figure out exactly what the issue was. Have worked around it for now by adding a dummy key to the top of my YAML file so I can keep the descriptive comments.