How to get all the nodes of an editor's state with customPlugin ?

[Michael-indochat]

I want to create a plugin that can retrieve the updated information of all nodes each time I make changes in the editor. My goal is to perform a character count of these nodes, while excluding special nodes called "mentionNode."

For instance, if there's a sentence in the editor that says "Hello, @FriendName," where "@FriendName" is a mentionNode,
I want to calculate the character count while disregarding this node.
Instead, I would only count the characters in the "Hello," part of the text.

[Michael-indochat]

At present, my judgment is that I can get AllNode, and judge whether each node is a mentionNode $isMentionNode through the recursive syntax, and calculate the amount of content with the result

[Alex-ray]

You can use $nodesOfType!

import { $nodesOfType } from "lexical";

editorState.read(() => {
    const listNodes = $nodesOfType(ListNode);
})

[CanRau]

There's also $dfs, $getChildrenRecursively and more at #4774 (reply in thread)