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

Interface AggregationsMetricAggregationBase

Name	Type	Description
field	Field	The field on which to run the aggregation.
missing	AggregationsMissing	The value to apply to documents that do not have a value. By default, documents without a value are ignored.
script	Script	ScriptSource