Function buffer

buffer(geometries, distances, unit, unionResults?): Promise<Polygon | Polygon[]>
Creates buffer polygons at a specified distances around the given geometries. The original geometry will not be modified.
Parameters
- geometries: GeometryUnion
  The geometry to buffer.
- distances: number
  The distances between the buffer polygons and the geometries.
- unit:
      | "feet"
      | "kilometers"
      | "meters"
      | "miles"
      | "nautical-miles"
      | "yards"
  The unit of the distance, see support/esri!DistanceUnit.
- OptionalunionResults: boolean
  If true, the returned buffers will be combined into a single polygon. Defaults to false.
Returns Promise<Polygon | Polygon[]>
buffer(geometries, distances, unit, unionResults?): Promise<Polygon | Polygon[]>
Parameters
- geometries: GeometryUnion[]
- distances: number[]
- unit:
      | "feet"
      | "kilometers"
      | "meters"
      | "miles"
      | "nautical-miles"
      | "yards"
- OptionalunionResults: boolean
Returns Promise<Polygon | Polygon[]>