[lexical][lexical-clipboard][lexical-html][lexical-selection] Feature: Add an internal ephemeral node concept#7904
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etrepum merged 4 commits intofacebook:mainfrom Oct 7, 2025
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…concept to deal with creating nodes in readonly editors
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…k as expected now
zurfyx
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Oct 7, 2025
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Description
Some of the ugly parts in JSON + HTML export are related to dealing with partially selected TextNode. This tries to clean up some of those rough edges with a new internal concept.
Ephemeral Nodes
An ephemeral node is marked with the
node[EPHEMERAL] === true(it is a symbol so is non-enumerable and won't show up with yjs). These instances always returnthisforgetLatestandgetWritableand are not allowed to be in an EditorState (which means they can not be a parent or child of some other node). You can create these with$cloneWithPropertiesEphemeral. This is mostly used to create a TextNode in a read-only context where we slice its__textbased on the selection.With this feature we can be more sure that state doesn't leak from these cloned nodes back into the EditorState, and that EditorState doesn't leak out into the accessors and mutators of the ephemeral node (e.g.
setTextContentnow works on these ephemeral nodes in a read-only editor with no errors or side-effects to the EditorState)Test plan
New unit tests, all existing e2e + unit tests should pass