diff --git a/.swift-version b/.swift-version
new file mode 100644
index 0000000..39ee137
--- /dev/null
+++ b/.swift-version
@@ -0,0 +1 @@
+6.3.1
\ No newline at end of file
diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..8b9142b
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,44 @@
+{
+    "configurations": [
+        {
+            "type": "swift",
+            "request": "launch",
+            "args": [],
+            "cwd": "${workspaceFolder:swiftlyfox}",
+            "name": "Debug swiftyfox",
+            "target": "swiftyfox",
+            "configuration": "debug",
+            "preLaunchTask": "swift: Build Debug swiftyfox"
+        },
+        {
+            "type": "swift",
+            "request": "launch",
+            "args": [],
+            "cwd": "${workspaceFolder:swiftlyfox}",
+            "name": "Release swiftyfox",
+            "target": "swiftyfox",
+            "configuration": "release",
+            "preLaunchTask": "swift: Build Release swiftyfox"
+        },
+        {
+            "type": "swift",
+            "request": "launch",
+            "args": [],
+            "cwd": "${workspaceFolder:swiftlyfox}",
+            "name": "Debug swiftlyfox",
+            "target": "swiftlyfox",
+            "configuration": "debug",
+            "preLaunchTask": "swift: Build Debug swiftlyfox"
+        },
+        {
+            "type": "swift",
+            "request": "launch",
+            "args": [],
+            "cwd": "${workspaceFolder:swiftlyfox}",
+            "name": "Release swiftlyfox",
+            "target": "swiftlyfox",
+            "configuration": "release",
+            "preLaunchTask": "swift: Build Release swiftlyfox"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
new file mode 100644
index 0000000..880bda0
--- /dev/null
+++ b/.vscode/tasks.json
@@ -0,0 +1,20 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "swift: Build swiftlyfox",
+            "type": "shell",
+            "command": "swift",
+            "args": [
+                "build",
+                "--swift-sdk",
+                "swift-6.3.1-RELEASE_wasm",
+                "--product",
+                "swiftlyfox"
+            ],
+            "group": "build",
+            "problemMatcher": [],
+            "detail": "Custom build for WASM target"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/Package.resolved b/Package.resolved
deleted file mode 100644
index 987a005..0000000
--- a/Package.resolved
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-  "originHash" : "f3097f72511ac559eeb33298fe5d1aac2e73e26e2133181df5c213b8394d0ab0",
-  "pins" : [
-    {
-      "identity" : "swift-argument-parser",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/apple/swift-argument-parser",
-      "state" : {
-        "revision" : "cdd0ef3755280949551dc26dee5de9ddeda89f54",
-        "version" : "1.6.2"
-      }
-    }
-  ],
-  "version" : 3
-}
diff --git a/Package.swift b/Package.swift
index 8d53745..9a22bcd 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,23 +1,23 @@
-// swift-tools-version: 6.2
+// swift-tools-version: 6.3
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
 
 let package = Package(
-    name: "swiftyfox",
-    dependencies: [
-            // other dependencies
-            .package(url: "https://github.com/apple/swift-argument-parser", from: "1.3.0"),
-        ],
-    targets: [
-        // Targets are the basic building blocks of a package, defining a module or a test suite.
-        // Targets can depend on other targets in this package and products from dependencies.
-        .executableTarget(
-            name: "swiftyfox",
-            dependencies: [
-                // other dependencies
-                .product(name: "ArgumentParser", package: "swift-argument-parser"),
-            ]),
-        
-    ]
+  name: "swiftlyfox",
+  dependencies: [
+    // other dependencies
+  ],
+  targets: [
+    // Targets are the basic building blocks of a package, defining a module or a test suite.
+    // Targets can depend on other targets in this package and products from dependencies.
+    .executableTarget(
+      name: "swiftlyfox",
+    ),
+    .testTarget(
+      name: "swiftlyfoxTests",
+      dependencies: ["swiftlyfox"]
+    ),
+  ],
+  swiftLanguageModes: [.v6]
 )
diff --git a/Sources/swiftlyfox/swiftlyfox.swift b/Sources/swiftlyfox/swiftlyfox.swift
new file mode 100644
index 0000000..0c8b282
--- /dev/null
+++ b/Sources/swiftlyfox/swiftlyfox.swift
@@ -0,0 +1,6 @@
+@main
+struct swiftlyfox {
+  static func main() {
+    print("Hello, world!")
+  }
+}
diff --git a/Sources/swiftyfox/swiftyfox.swift b/Sources/swiftyfox/swiftyfox.swift
deleted file mode 100644
index a851b6d..0000000
--- a/Sources/swiftyfox/swiftyfox.swift
+++ /dev/null
@@ -1,10 +0,0 @@
-import ArgumentParser
-
-@main
-struct swiftyfox: ParsableCommand {
-    @Flag var verbose = false
-    
-    static func main() {
-        print("Hello, world!")
-    }
-}
diff --git a/SwiftyFox.playground/Contents.swift b/SwiftyFox.playground/Contents.swift
index 0017f4a..a3fcf4b 100644
--- a/SwiftyFox.playground/Contents.swift
+++ b/SwiftyFox.playground/Contents.swift
@@ -27,13 +27,68 @@ func calcStats(scores: [Int]) -> (min: Int, max: Int, sum: Int) {
 let stats = calcStats(scores: [5, 3, 100, 3, 9])
 let sum = stats.sum // 120
 
-class Shape {
+class NamedShape {
     var numberOfSides = 0
+    var name: String
+    
+    init(name: String = "Heptagon") {
+        self.name = name
+    }
+    
     func simpleDescription() -> String {
         return "A shape with \(numberOfSides) sides."
     }
 }
 
-var shape = Shape()
+class Square: NamedShape {
+    var sideLength: Double
+    
+    init(sideLength: Double, name: String = "Square") {
+        self.sideLength = sideLength
+        super.init(name: name)
+    }
+    
+    func area() -> Double {
+        return sideLength * sideLength
+    }
+    
+    override func simpleDescription() -> String {
+        return "A Square with \(numberOfSides) sides."
+    }
+}
+
+class EquilateralTriangle: NamedShape {
+    var sideLength: Double
+    
+    var perimeter: Double {
+        get {
+            return 3.0 * sideLength
+        }
+        
+        set {
+            sideLength = newValue / 3.0
+        }
+    }
+    
+    init(sideLength: Double, name: String = "Square") {
+        self.sideLength = sideLength
+        super.init(name: name)
+        numberOfSides = 3
+    }
+    
+    func area() -> Double {
+        return sideLength * sideLength
+    }
+    
+    override func simpleDescription() -> String {
+        return "A Equilateral Triangle with \(numberOfSides) sides."
+    }
+}
+
+var shape = NamedShape()
 shape.numberOfSides = 7
-var shapeDesc = shape.simpleDescription()
+shape.simpleDescription()
+
+var square = Square(sideLength: 5.2)
+square.area()
+square.simpleDescription()
diff --git a/Tests/swiftlyfoxTests/swiftlyfoxTests.swift b/Tests/swiftlyfoxTests/swiftlyfoxTests.swift
new file mode 100644
index 0000000..81434fd
--- /dev/null
+++ b/Tests/swiftlyfoxTests/swiftlyfoxTests.swift
@@ -0,0 +1,8 @@
+import Testing
+@testable import swiftlyfox
+
+@Test func example() async throws {
+    // Write your test here and use APIs like `#expect(...)` to check expected conditions.
+    // Swift Testing Documentation
+    // https://developer.apple.com/documentation/testing
+}