Defining denormalization in an inversed link before direct link throws wrong error

[Floriferous]

If you define an inversed link with denormalization before the direct link, it throws: TypeError: Cannot read property 'isMeta' of undefined.

at:

W20190815-18:12:19.069(2)? (STDERR) TypeError: Cannot read property 'isMeta' of undefined
W20190815-18:12:19.069(2)? (STDERR)     at Linker.isMeta (packages/cultofcoders:grapher/lib/links/linker.js:93:50)
W20190815-18:12:19.069(2)? (STDERR)     at Linker._initDenormalization (packages/cultofcoders:grapher/lib/links/linker.js:410:18)
W20190815-18:12:19.069(2)? (STDERR)     at new Linker (packages/cultofcoders:grapher/lib/links/linker.js:28:14)
W20190815-18:12:19.070(2)? (STDERR)     at _.each (packages/cultofcoders:grapher/lib/links/extension.js:23:28)
W20190815-18:12:19.070(2)? (STDERR)     at Function._.each._.forEach (packages/underscore.js:147:22)
W20190815-18:12:19.070(2)? (STDERR)     at ns.Collection.addLinks (packages/cultofcoders:grapher/lib/links/extension.js:14:11)
W20190815-18:12:19.070(2)? (STDERR)     at undefinedCollectionBug.test.js (server/tests/undefinedCollectionBug.test.js:20:3)

Here's a reproduction:

const B = new Mongo.Collection('b');
const C = new Mongo.Collection('c');
B.addLinks({
  c: {
    collection: C,
    inversedBy: 'bs',
    denormalize: {
      field: 'cCache',
      body: { _id: 1, name: 1 }
    }
  },
});

C.addLinks({
  bs: {
    collection: B,
    field: 'bLinks',
    type: 'many',
    metadata: true,
    autoremove: true,
    unique: true
  }
});

I expect it to throw an error that helps me identify what the issue is.

[Floriferous]

A simple way to get around this is to define all your direct links normally, but all your inversed links in Meteor.startup :)