Same operation, different results

1

The following code doesn’t log the same thing for each doc, and doesn’t log the same thing from one run to the next. The length of the encoded state varies from 16 to 17.

import * as Y from 'yjs'

const yDoc1 = new Y.Doc()
const yMap1 = yDoc1.getMap()
yMap1.set('a', 1)
const yDoc2 = new Y.Doc()
const yMap2 = yDoc2.getMap()
yMap2.set('a', 1)
const yState1 = Y.encodeStateAsUpdate(yDoc1)
const yState2 = Y.encodeStateAsUpdate(yDoc2)
console.log('yState1:', yState1)
console.log('yState2:', yState2)

Is this expected behaviour?

2

Yes, that is to be expected. For testing purposes, you can manually set the clientID to get consistent results, but don’t do that in practice.

ydoc.clientID = 0

3

I see, it is only the clientID that changes run to run, and that value is included in the encoded state. Thanks, makes sense now.