Add swiftlint / swiftformat in Package.swift, fix issues (#168)

- Add swiftlint / swiftformat in Package.swift and invoke with `swift
run`
- Fix lint issues
- Format codebase
- Update Makefile and scripts to use `swift run swiftlint` and `swift
run swiftformat`
- Define swiftformat settings to .swiftformat file
- Update lint script to check for formatting errors

.swiftformat

@@ -0,0 +1,3 @@
+--swiftversion 4.2 
+--disable andOperator
+

.swiftlint.yml

@@ -4,6 +4,7 @@ disabled_rules: # rule identifiers to exclude from running
   - line_length
   - cyclomatic_complexity
   - file_length
+  - trailing_comma
 included: # paths to include during linting. `--path` is ignored if present.
   - Sources
   - Tests
@@ -18,4 +19,3 @@ type_body_length:
   - 500 # error
 
 reporter: "xcode" # reporter type (xcode, json, csv, checkstyle, junit, html, emoji)
-

Examples/Cocoa/Package.swift

@@ -3,4 +3,3 @@ import PackageDescription
 let package = Package(
     name: "Objective_C"
 )
-

Examples/Cocoa/Tests/LinuxMain.swift

@@ -1,5 +1,5 @@
-import XCTest
 @testable import ObjcTestSuite
+import XCTest
 XCTMain([
     testCase(ObjcTestSuite.allTests),
 ])

Examples/Cocoa/Tests/Objective_CTests/ObjcJSBridgingTests.swift

@@ -5,20 +5,19 @@ import XCTest
 @testable import Objective_C
 
 class ObjcJavaScriptCoreBridgingTestSuite: XCTestCase {
-
     static let _context: JSContext = JSContext()!
-    
+
     override class func setUp() {
-        super.setUp();
-        injectJSFileIntoContext(fileName: "bundle", context: _context);
+        super.setUp()
+        injectJSFileIntoContext(fileName: "bundle", context: _context)
     }
-    
+
     // Inject a js file located in plank/Examples/Shared/
     class func injectJSFileIntoContext(fileName: String, context: JSContext) {
         let jsFileName = "\(fileName).js"
         // The currentDirectoryPath is: plank/Examples/Cocoa/
         let currentPath = FileManager.default.currentDirectoryPath
-        
+
         let pathURL = URL(fileURLWithPath: currentPath)
         let finalPathURL = pathURL.appendingPathComponent("..")
             .appendingPathComponent("Shared")
@@ -30,40 +29,40 @@ class ObjcJavaScriptCoreBridgingTestSuite: XCTestCase {
             print("Couldn't inject \(jsFileName) into JSContext")
         }
     }
-    
+
     var context: JSContext {
         return ObjcJavaScriptCoreBridgingTestSuite._context
     }
-    
+
     func testImageModelBridgingGetImage() {
         // Expected modelc dictionary
         let imageModelDictionary: JSONDict = [
             "height": 300,
             "width": 200,
-            "url": "https://picsum.photos/200/300"
+            "url": "https://picsum.photos/200/300",
         ]
-        let expectedImage = Image(modelDictionary: imageModelDictionary);
+        let expectedImage = Image(modelDictionary: imageModelDictionary)
         let expectedImageDictionaryRepresentation = expectedImage.dictionaryObjectRepresentation()
-        
+
         // Get image from js context
         let getTestImageModelJSONFunction = context.objectForKeyedSubscript("getTestImageModelJSON")!
-        let jsImageModel = getTestImageModelJSONFunction.call(withArguments:[]).toObject() as! JSONDict
-        
-        XCTAssert(expectedImage.isEqual(to: Image(modelDictionary:jsImageModel)))
+        let jsImageModel = getTestImageModelJSONFunction.call(withArguments: []).toObject() as! JSONDict
+
+        XCTAssert(expectedImage.isEqual(to: Image(modelDictionary: jsImageModel)))
         XCTAssert(jsImageModel == expectedImageDictionaryRepresentation)
     }
-    
+
     func testImageModelBridgingSendImage() {
         // Expected model dictionary
         let imageModelDictionary: JSONDict = [
             "height": 300,
             "width": 200,
-            "url": "https://picsum.photos/200/300"
+            "url": "https://picsum.photos/200/300",
         ]
-        let imageModel = Image(modelDictionary: imageModelDictionary);
+        let imageModel = Image(modelDictionary: imageModelDictionary)
         let imageModelDictionaryRepresentation = imageModel.dictionaryObjectRepresentation()
-        
+
         let testImageModelJSON = context.objectForKeyedSubscript("sendTestImageModelJSON")!
-        XCTAssert(testImageModelJSON.call(withArguments:[imageModelDictionaryRepresentation]).toBool())
+        XCTAssert(testImageModelJSON.call(withArguments: [imageModelDictionaryRepresentation]).toBool())
     }
 }