@mapbox/tile-decorator

tile-decorator 

A JavaScript module for decoding Mapbox vector tiles,
doing various modifications in JS and reencoding back. It can:

- add new properties to a layer (updateLayerProperties)
- filter out features that don't have specific properties (filterLayerByKeys)
- select properties to keep on each feature (selectLayerKeys)
- merge features with the same properties and type into one, and sort geometries within one feature by proximity for better compression (mergeLayer)
- get all values of a specific property in a layer (getLayerValues)
- rename layers (layer.name = 'foo')
- rename keys (layer.keys[2] = 'kittens')