Cannot set property 'groupid' of undefined

[ricktobacco]

Trying to run your moxygen --anchors --groups --output api-%s.md from README,
getting

TypeError: Cannot set property 'groupid' of undefined
at Object. (/home/ricardo/.nvm/versions/node/v8.11.4/lib/node_modules/moxygen/src/parser.js:344:34)
at Array.forEach ()
at Object. (/home/ricardo/.nvm/versions/node/v8.11.4/lib/node_modules/moxygen/src/parser.js:340:33)
at Array.forEach ()
at Object.parseCompound (/home/ricardo/.nvm/versions/node/v8.11.4/lib/node_modules/moxygen/src/parser.js:328:30)
at Object. (/home/ricardo/.nvm/versions/node/v8.11.4/lib/node_modules/moxygen/src/parser.js:445:16)
at Array.forEach ()
at Object. (/home/ricardo/.nvm/versions/node/v8.11.4/lib/node_modules/moxygen/src/parser.js:443:14)
at Object. (/home/ricardo/.nvm/versions/node/v8.11.4/lib/node_modules/moxygen/src/parser.js:474:9)
at Parser. (/home/ricardo/.nvm/versions/node/v8.11.4/lib/node_modules/moxygen/node_modules/xml2js/lib/parser.js:306:18)

[barakman]

To elaborate on this, in file parser.js / line 400:

var member = this.references[memberdef.$.id];

Object this.references has no key memberdef.$.id.
Subsequently, variable member is set to undefined.
Subsequently, the expression member.groupid throws an exception (stated at the title of this issue).

[brycelelbach]

This seems to happen when you have a non-member function that is documented.