🎨 Create CommonResourceMembers for code reuse

Creates `common.tsp` with `CommonResourceMembers` that resources spread
for code reuse (model composition).

src/common.tsp

@@ -0,0 +1,14 @@
+/** Members common across all (most) resources. */
+model CommonResourceMembers {
+	// Dev note: Use the spread syntax, not extends. This keeps the name internal.
+	// https://microsoft.github.io/typespec/language-basics/models#model-composition
+
+	/** The hypermedia URL of this resource. */
+	url: url;
+
+	/** The ISO 8601 date format of the time that this resource was created. */
+	created: utcDateTime;
+
+	/** The ISO 8601 date format of the time that this resource was edited. */
+	edited: utcDateTime;
+}

src/films.tsp

@@ -1,3 +1,5 @@
+import "./common.tsp";
+
 using TypeSpec.Http;
 
 namespace SWAPI;
@@ -56,12 +58,5 @@ model Film {
 	/** An array of planet resource URLs that are in this film. */
 	planets: url[];
 
-	/** The hypermedia URL of this resource. */
-	url: url;
-
-	/** The ISO 8601 date format of the time that this resource was created. */
-	created: utcDateTime;
-
-	/** The ISO 8601 date format of the time that this resource was edited. */
-	edited: utcDateTime;
+	...CommonResourceMembers;
 }

src/people.tsp

@@ -1,3 +1,5 @@
+import "./common.tsp";
+
 using TypeSpec.Http;
 
 namespace SWAPI;
@@ -62,12 +64,5 @@ model Person {
 	/** An array of vehicle resource URLs that this person has piloted. */
 	vehicles: url[];
 
-	/** The hypermedia URL of this resource. */
-	url: url;
-
-	/** The ISO 8601 date format of the time that this resource was created. */
-	created: utcDateTime;
-
-	/** The ISO 8601 date format of the time that this resource was edited. */
-	edited: utcDateTime;
+	...CommonResourceMembers;
 }

src/planets.tsp

@@ -1,3 +1,5 @@
+import "./common.tsp";
+
 using TypeSpec.Http;
 
 namespace SWAPI;
@@ -56,12 +58,5 @@ model Planet {
 	/** An array of Film URL Resources that this planet has appeared in. */
 	films: url[];
 
-	/** The hypermedia URL of this resource. */
-	url: url;
-
-	/** The ISO 8601 date format of the time that this resource was created. */
-	created: utcDateTime;
-
-	/** The ISO 8601 date format of the time that this resource was edited. */
-	edited: utcDateTime;
+	...CommonResourceMembers;
 }

src/species.tsp

@@ -1,3 +1,5 @@
+import "./common.tsp";
+
 using TypeSpec.Http;
 
 namespace SWAPI;
@@ -60,13 +62,6 @@ namespace species {
 		/** An array of Film URL Resources that this species has appeared in. */
 		films: url[];
 
-		/** The hypermedia URL of this resource. */
-		url: url;
-
-		/** The ISO 8601 date format of the time that this resource was created. */
-		created: utcDateTime;
-
-		/** The ISO 8601 date format of the time that this resource was edited. */
-		edited: utcDateTime;
+		...CommonResourceMembers;
 	}
 }

src/starships.tsp

@@ -1,3 +1,5 @@
+import "./common.tsp";
+
 using TypeSpec.Http;
 
 namespace SWAPI;
@@ -68,12 +70,5 @@ model Starship {
 	/** An array of People URL Resources that this starship has been piloted by. */
 	pilots: url[];
 
-	/** The hypermedia URL of this resource. */
-	url: url;
-
-	/** The ISO 8601 date format of the time that this resource was created. */
-	created: utcDateTime;
-
-	/** The ISO 8601 date format of the time that this resource was edited. */
-	edited: utcDateTime;
+	...CommonResourceMembers;
 }

src/vehicles.tsp

@@ -1,3 +1,5 @@
+import "./common.tsp";
+
 using TypeSpec.Http;
 
 namespace SWAPI;
@@ -62,12 +64,5 @@ model Vehicle {
 	/** An array of People URL Resources that this vehicle has been piloted by. */
 	pilots: url[];
 
-	/** The hypermedia URL of this resource. */
-	url: url;
-
-	/** The ISO 8601 date format of the time that this resource was created. */
-	created: utcDateTime;
-
-	/** The ISO 8601 date format of the time that this resource was edited. */
-	edited: utcDateTime;
+	...CommonResourceMembers;
 }