elasticsearch-js/docs/reference/api/IngestSplitProcessor.md

IngestSplitProcessor [interface-IngestSplitProcessor]

Name	Type	Description
field	Field	The field to split.
ignore_missing	boolean	If true and field does not exist, the processor quietly exits without modifying the document.
preserve_trailing	boolean	Preserves empty trailing fields, if any.
separator	string	A regex which matches the separator, for example, , or \s+.
target_field	Field	The field to assign the split value to. By default, the field is updated in-place.