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diff --git a/platform/darwin/src/MGLShapeSource.h b/platform/darwin/src/MGLShapeSource.h
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+++ b/platform/darwin/src/MGLShapeSource.h
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+#import "MGLSource.h"
+
+#import "MGLTypes.h"
+#import "MGLShape.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol MGLFeature;
+
+/**
+ Options for `MGLShapeSource` objects.
+ */
+typedef NSString *MGLShapeSourceOption NS_STRING_ENUM;
+
+/**
+ An `NSNumber` object containing a Boolean enabling or disabling clustering.
+ If the `shape` property contains point shapes, setting this option to
+ `YES` clusters the points by radius into groups. The default value is `NO`.
+ */
+extern const MGLShapeSourceOption MGLShapeSourceOptionClustered;
+
+/**
+ An `NSNumber` object containing an integer; specifies the radius of each
+ cluster if clustering is enabled. A value of 512 produces a radius equal to
+ the width of a tile. The default value is 50.
+ */
+extern const MGLShapeSourceOption MGLShapeSourceOptionClusterRadius;
+
+/**
+ An `NSNumber` object containing an integer; specifies the maximum zoom level at
+ which to cluster points if clustering is enabled. Defaults to one zoom level 
+ less than the value of `MGLShapeSourceOptionMaximumZoomLevel` so that, at the
+ maximum zoom level, the shapes are not clustered.
+ */
+extern const MGLShapeSourceOption MGLShapeSourceOptionMaximumZoomLevelForClustering;
+
+/**
+ An `NSNumber` object containing an integer; specifies the maximum zoom level at
+ which to create vector tiles. A greater value produces greater detail at high
+ zoom levels. The default value is 18.
+ */
+extern const MGLShapeSourceOption MGLShapeSourceOptionMaximumZoomLevel;
+
+/**
+ An `NSNumber` object containing an integer; specifies the size of the tile
+ buffer on each side. A value of 0 produces no buffer. A value of 512 produces a 
+ buffer as wide as the tile itself. Larger values produce fewer rendering 
+ artifacts near tile edges and slower performance. The default value is 128.
+ */
+extern const MGLShapeSourceOption MGLShapeSourceOptionBuffer;
+
+/**
+ An `NSNumber` object containing a double; specifies the Douglas-Peucker
+ simplification tolerance. A greater value produces simpler geometries and
+ improves performance. The default value is 0.375.
+ */
+extern const MGLShapeSourceOption MGLShapeSourceOptionSimplificationTolerance;
+
+/**
+ `MGLShapeSource` is a map content source that supplies vector shapes to be
+ shown on the map. The shapes may be instances of `MGLShape` or `MGLFeature`,
+ or they may be defined by local or external
+ <a href="http://geojson.org/">GeoJSON</a> code. A shape source is added to an
+ `MGLStyle` object along with an `MGLVectorStyleLayer` object. The vector style
+ layer defines the appearance of any content supplied by the shape source.
+ 
+ Each
+ <a href="https://www.mapbox.com/mapbox-gl-style-spec/#sources-geojson"><code>geojson</code></a>
+ source defined by the style JSON file is represented at runtime by an
+ `MGLShapeSource` object that you can use to refine the map’s content and
+ initialize new style layers. You can also add and remove sources dynamically
+ using methods such as `-[MGLStyle addSource:]` and
+ `-[MGLStyle sourceWithIdentifier:]`.
+ 
+ Any vector style layer initialized with a shape source should have a `nil`
+ value in its `sourceLayerIdentifier` property.
+ */
+@interface MGLShapeSource : MGLSource
+
+#pragma mark Initializing a Source
+
+/**
+ Returns a shape source with an identifier, URL, and dictionary of options for
+ the source.
+ 
+ @param identifier A string that uniquely identifies the source.
+ @param URL An HTTP(S) URL, absolute file URL, or local file URL relative to the
+    current application’s resource bundle.
+ @param options An `NSDictionary` of options for this source.
+ @return An initialized shape source.
+ */
+- (instancetype)initWithIdentifier:(NSString *)identifier URL:(NSURL *)url options:(nullable NS_DICTIONARY_OF(MGLShapeSourceOption, id) *)options NS_DESIGNATED_INITIALIZER;
+
+/**
+ Returns a shape source with an identifier, a shape, and dictionary of options
+ for the source.
+ 
+ To specify attributes about the shape, use an instance of an `MGLShape`
+ subclass that conforms to the `MGLFeature` protocol, such as `MGLPointFeature`.
+ To include multiple shapes in the source, use an `MGLShapeCollection` or
+ `MGLShapeCollectionFeature` object.
+ 
+ To create a shape from GeoJSON source code, use the
+ `+[MGLShape shapeWithData:encoding:error:]` method.
+ 
+ @param identifier A string that uniquely identifies the source.
+ @param shape A concrete subclass of `MGLShape`
+ @param options An `NSDictionary` of options for this source.
+ @return An initialized shape source.
+ */
+- (instancetype)initWithIdentifier:(NSString *)identifier shape:(nullable MGLShape *)shape options:(nullable NS_DICTIONARY_OF(MGLShapeSourceOption, id) *)options NS_DESIGNATED_INITIALIZER;
+
+#pragma mark Accessing a Source’s Content
+
+/**
+ The contents of the source. A shape can represent a GeoJSON geometry, a
+ feature, or a collection of features.
+
+ If the receiver was initialized using `-initWithIdentifier:URL:options:`, this
+ property is set to `nil`. This property is unavailable until the receiver is
+ passed into `-[MGLStyle addSource:]`.
+ */
+@property (nonatomic, copy, nullable) MGLShape *shape;
+
+/**
+ The URL to the GeoJSON document that specifies the contents of the source.
+
+ If the receiver was initialized using `-initWithIdentifier:shape:options:`,
+ this property is set to `nil`.
+ */
+@property (nonatomic, copy, nullable) NSURL *URL;
+
+@end
+
+NS_ASSUME_NONNULL_END