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

IndicesPutIndexTemplateIndexTemplateMapping [interface-IndicesPutIndexTemplateIndexTemplateMapping]

Name	Type	Description
aliases	Record<IndexName, IndicesAlias>	Aliases to add. If the index template includes a data_stream object, these are data stream aliases. Otherwise, these are index aliases. Data stream aliases ignore the index_routing, routing, and search_routing options.
lifecycle	IndicesDataStreamLifecycle
mappings	MappingTypeMapping	Mapping for fields in the index. If specified, this mapping can include field names, field data types, and mapping parameters.
settings	IndicesIndexSettings	Configuration options for the index.