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

Interface IndicesAliasDefinition

Name	Type	Description
filter	QueryDslQueryContainer	Query used to limit documents the alias can access.
index_routing	string	Value used to route indexing operations to a specific shard. If specified, this overwrites the routing value for indexing operations.
is_hidden	boolean	If true, the alias is hidden. All indices for the alias must have the same is_hidden value.
is_write_index	boolean	If true, the index is the write index for the alias.
routing	string	Value used to route indexing and search operations to a specific shard.
search_routing	string	Value used to route search operations to a specific shard. If specified, this overwrites the routing value for search operations.