Fixed Contents.json formatting (#231)

Closes #225

Author: subdan

Sources/XcodeExport/Model/XcodeExportExtensions.swift

@@ -49,7 +49,7 @@ extension XcodeAssetContents {
 
     func makeFileContents(to directory: URL) throws -> FileContents {
         let encoder = JSONEncoder()
-        encoder.outputFormatting = .prettyPrinted
+        encoder.outputFormatting = [.prettyPrinted, .sortedKeys]
 
         let data = try encoder.encode(self)
         let fileURL = URL(string: "Contents.json")!

Sources/XcodeExport/XcodeColorExporter.swift

@@ -219,7 +219,7 @@ final public class XcodeColorExporter: XcodeExporterBase {
 
     private func makeXcodeAssetFileContents(contents: XcodeAssetContents, directory: URL) throws -> FileContents {
         let encoder = JSONEncoder()
-        encoder.outputFormatting = .prettyPrinted
+        encoder.outputFormatting = [.prettyPrinted, .sortedKeys]
         let data = try encoder.encode(contents)
         let fileURL = URL(string: "Contents.json")!
         return FileContents(

Tests/XcodeExportTests/XcodeIconsExporterTests.swift

@@ -667,17 +667,17 @@ final class XcodeIconsExporterTests: XCTestCase {
         {
           "images" : [
             {
-              "idiom" : "universal",
-              "filename" : "ic24TabBarHome.pdf"
+              "filename" : "ic24TabBarHome.pdf",
+              "idiom" : "universal"
             }
           ],
           "info" : {
-            "version" : 1,
-            "author" : "xcode"
+            "author" : "xcode",
+            "version" : 1
           },
           "properties" : {
-            "template-rendering-intent" : "template",
-            "preserves-vector-representation" : true
+            "preserves-vector-representation" : true,
+            "template-rendering-intent" : "template"
           }
         }
         """
@@ -711,17 +711,17 @@ final class XcodeIconsExporterTests: XCTestCase {
         {
           "images" : [
             {
-              "idiom" : "universal",
-              "filename" : "ic24TabBarHome.pdf"
+              "filename" : "ic24TabBarHome.pdf",
+              "idiom" : "universal"
             }
           ],
           "info" : {
-            "version" : 1,
-            "author" : "xcode"
+            "author" : "xcode",
+            "version" : 1
           },
           "properties" : {
-            "template-rendering-intent" : "template",
-            "preserves-vector-representation" : true
+            "preserves-vector-representation" : true,
+            "template-rendering-intent" : "template"
           }
         }
         """