Improve scripts (#84)

Author: tinder-cfuller

bin/get-deployment-target

@@ -4,8 +4,8 @@ import Foundation
 
 let args: [String] = Array(CommandLine.arguments.dropFirst())
 
-guard let platformName = args.first
-else { exit(1) }
+guard let platformName: String = args.first
+else { exit(EXIT_FAILURE) }
 
 let task: Process = .init()
 let pipe: Pipe = .init()
@@ -18,11 +18,11 @@ task.waitUntilExit()
 
 let data: Data = pipe.fileHandleForReading.readDataToEndOfFile()
 
-guard let object = try? JSONSerialization.jsonObject(with: data),
-      let json = object as? [String: Any],
-      let platforms = json["platforms"] as? [[String: Any]],
-      let platform = platforms.first(where: { $0["platformName"] as? String == platformName }),
-      let version = platform["version"] as? String
-else { exit(1) }
+guard let object: Any = try? JSONSerialization.jsonObject(with: data),
+      let json: [String: Any] = object as? [String: Any],
+      let platforms: [[String: Any]] = json["platforms"] as? [[String: Any]],
+      let platform: [String: Any] = platforms.first(where: { $0["platformName"] as? String == platformName }),
+      let version: String = platform["version"] as? String
+else { exit(EXIT_FAILURE) }
 
 print(version)

bin/get-libraries

@@ -13,15 +13,15 @@ task.waitUntilExit()
 
 let data: Data = pipe.fileHandleForReading.readDataToEndOfFile()
 
-guard let object = try? JSONSerialization.jsonObject(with: data),
-      let json = object as? [String: Any],
-      let products = json["products"] as? [[String: Any]]
-else { exit(1) }
+guard let object: Any = try? JSONSerialization.jsonObject(with: data),
+      let json: [String: Any] = object as? [String: Any],
+      let products: [[String: Any]] = json["products"] as? [[String: Any]]
+else { exit(EXIT_FAILURE) }
 
 products
     .compactMap {
-        guard let name = $0["name"] as? String,
-              let type = $0["type"] as? [String: Any],
+        guard let name: String = $0["name"] as? String,
+              let type: [String: Any] = $0["type"] as? [String: Any],
               type["library"] != nil
         else { return nil}
         return name

bin/get-platforms

@@ -13,10 +13,10 @@ task.waitUntilExit()
 
 let data: Data = pipe.fileHandleForReading.readDataToEndOfFile()
 
-guard let object = try? JSONSerialization.jsonObject(with: data),
-      let json = object as? [String: Any],
-      let platforms = json["platforms"] as? [[String: Any]]
-else { exit(1) }
+guard let object: Any = try? JSONSerialization.jsonObject(with: data),
+      let json: [String: Any] = object as? [String: Any],
+      let platforms: [[String: Any]] = json["platforms"] as? [[String: Any]]
+else { exit(EXIT_FAILURE) }
 
 platforms
     .compactMap { $0["platformName"] as? String }