Add basic protocols and type aliases

.gitignore

@@ -2,3 +2,4 @@
 /.build
 /Packages
 /*.xcodeproj
+.swiftpm

Package.swift

@@ -1,26 +1,17 @@
-// swift-tools-version:5.1
-// The swift-tools-version declares the minimum version of Swift required to build this package.
+// swift-tools-version:5.0
 
 import PackageDescription
 
 let package = Package(
     name: "Elementary",
     products: [
-        // Products define the executables and libraries produced by a package, and make them visible to other packages.
         .library(
             name: "Elementary",
             targets: ["Elementary"]),
     ],
-    dependencies: [
-        // Dependencies declare other packages that this package depends on.
-        // .package(url: /* package url */, from: "1.0.0"),
-    ],
     targets: [
-        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
-        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
         .target(
-            name: "Elementary",
-            dependencies: []),
+            name: "Elementary"),
         .testTarget(
             name: "ElementaryTests",
             dependencies: ["Elementary"]),

Sources/Elementary/Action.swift

@@ -0,0 +1,2 @@
+
+protocol Action {}

Sources/Elementary/Dispatch.swift

@@ -0,0 +1,3 @@
+
+typealias Call = () -> Void
+typealias Dispatch = (Action) -> Call

Sources/Elementary/Elementary.swift

@@ -1,3 +0,0 @@
-struct Elementary {
-    var text = "Hello, World!"
-}

Sources/Elementary/Store.swift

@@ -0,0 +1,4 @@
+
+protocol Store {
+    func dispatch(_ action: Action) -> Call
+}

Sources/Elementary/Update.swift

@@ -0,0 +1,2 @@
+
+typealias Update<State> =  (State, Action) -> State

Tests/ElementaryTests/ElementaryTests.swift

@@ -6,7 +6,7 @@ final class ElementaryTests: XCTestCase {
         // This is an example of a functional test case.
         // Use XCTAssert and related functions to verify your tests produce the correct
         // results.
-        XCTAssertEqual(Elementary().text, "Hello, World!")
+        //XCTAssertEqual(Elementary().text, "Hello, World!")
     }
 
     static var allTests = [