Null node reference in the middle of document positions?

1

when I try to print in the console all nodes in the positions from 0 until doc.content.size this is what happened:

image.png990×904 127 KB

Is this normal behavior ? Is it expected that some positions might not have a node ?

I came across this while debugging a problem in my application and just wanted to make sure this is not a bug in ProseMirror or a problem with my schema definition or something else.

this is how JSON.stringify(currentCanvasState.doc.toJSON()) looks like in case it helps:

{
	"type": "doc",
	"content": [{
		"type": "section",
		"attrs": {
			"id": "section_1"
		},
		"content": [{
			"type": "sectionHeader",
			"attrs": {
				"id": "section_1_header",
				"sectionId": "section_1",
				"text": "Section 1",
				"dueDate": null,
				"index": 0
			}
		}, {
			"type": "sectionContent",
			"attrs": {
				"id": "section_1_content",
				"collapsed": false
			},
			"content": [{
				"type": "paragraph",
				"content": [{
					"type": "text",
					"text": "2"
				}]
			}, {
				"type": "paragraph",
				"content": [{
					"type": "text",
					"text": "FFF"
				}]
			}, {
				"type": "paragraph",
				"content": [{
					"type": "text",
					"text": "22"
				}]
			}, {
				"type": "paragraph",
				"content": [{
					"type": "text",
					"text": "12312312312312333"
				}]
			}, {
				"type": "paragraph",
				"content": [{
					"type": "text",
					"text": "ff2222ff22222fffffffffffffffffff22ffffffffffffsasdasdasdasdasdasd"
				}]
			}]
		}]
	}]
}
2

Ya this is right. You probably should use one of the child walking methods on http://prosemirror.net/docs/ref/#model like currentCanvasState.doc.descendants.

3

Positions are defined as placed between ‘tokens’, which can be characters, node starts, node ends, or a whole leaf node. As such, not every position has a node starting there (for example, if you have multiple closing tokens following each other at the end of nested nodes).

4

Ok, thanks!