can not attribute when using tilejson tiles

[musicformellons]

Using .mvt, this works:

  'sources': {
    'osm': {
      'type': 'vector',
      'tiles': ['https://tile.mapzen.com/mapzen/vector/v1/512/all/{z}/{x}/{y}.mvt?api_key=mySecretKey'],
      'attribution': "© <a href='http://www.openstreetmap.org/copyright'>OpenStreetMap</a>"
    }
  },

When using json as url, this also works:

  'sources': {
    'openmaptiles': {
      'type': 'vector',
      'url': 'https://free.tilehosting.com/data/v3.json?key=mySecretKey'
    }
  },

However, using json in tiles field does NOT work:

  'sources': {
    'openmaptiles': {
      'type': 'vector',
      'tiles': ['https://free.tilehosting.com/data/v3.json?key=mySecretKey'],
      'attribution': "© <a href='http://www.openstreetmap.org/copyright'>OpenStreetMap</a>"
    }
  },

I get following error in the browser console:

blob:http://localhost:8089/293f7e7f-c69c-46c0-a46e-cfa7094ff579:54 Uncaught Error: Unimplemented type: 3
    at Pbf.skip (blob:http://localhost:8089/293f7e7f-c69c-46c0-a46e-cfa7094ff579:54)
    at Pbf.readFields (blob:http://localhost:8089/293f7e7f-c69c-46c0-a46e-cfa7094ff579:54)
    at new VectorTile (blob:http://localhost:8089/293f7e7f-c69c-46c0-a46e-cfa7094ff579:10)
    at blob:http://localhost:8089/293f7e7f-c69c-46c0-a46e-cfa7094ff579:125
    at XMLHttpRequest.r.onload (blob:http://localhost:8089/293f7e7f-c69c-46c0-a46e-cfa7094ff579:319)

BTW, using url field in combination with attribution field gives following error (so does not provide a workaround):

mapbox-gl.js?d5ed:510 Error: sources.openmaptiles.attribution: a source with a "url" property may not include a "attribution" property

[jfirebaugh]

If https://free.tilehosting.com/data/v3.json?key=mySecretKey returns TileJSON, it's not valid as an element of the tiles property. The tiles property specifies the URL templates for retrieving tile data, not the URL for retrieving TileJSON.

[musicformellons]

@jfirebaugh I don't quite get it... Could you maybe suggest how I can use the link and attribute at the same time, or is that somehow not possible?

[jfirebaugh]

No, it's not possible to include some TileJSON properties inline, such as attribution, while loading the rest from a TileJSON URL. You'll need to chose one method of specifying the TileJSON or the other.