ts_query_ls/docs/missing.md

The MISSING Node

If the parser is able to recover from erroneous text by inserting a missing token and then reducing, it will insert that missing node in the final tree so long as that tree has the lowest error cost. These missing nodes appear as seemingly normal nodes in the tree, but they are zero tokens wide, and are internally represented as a property of the actual terminal node that was inserted, instead of being its own kind of node, like the ERROR node. These special missing nodes can be queried using (MISSING):

(MISSING) @missing-node

This is useful when attempting to detect all syntax errors in a given parse tree, since these missing node are not captured by (ERROR) queries. Specific missing node types can also be queried:

(MISSING identifier) @missing-identifier
(MISSING ";") @missing-semicolon