A bug in the documentation: styles property expects an array, not object.

[wujekbogdan]

The documentation says that styles property should be an object. But when an object is given then there's an error in the console:

TypeError: this.styles_.push is not a function
at MarkerClusterer.setupStyles_ (markerclusterer.js:249)

When a single element array that contains an object is given then it works fine and styles are applied.

[XmlmXmlmX]

Hi @wujekbogdan, that's correct. Please note, that this repository isn't longer maintained. Please report this issue here: https://github.com/gmaps-marker-clusterer/gmaps-marker-clusterer