Function addSourceType

addSourceType(name, SourceType): Promise<void>
Adds a custom source type, making it available for use with Map#addSource.
Parameters
- name: string
  The name of the source type; source definition objects use this name in the {type: ...} field.
- SourceType: SourceClass
Returns Promise<void>
a promise that is resolved when the source type is ready or rejected with an error.