feat(MiddlewareCore): add core abstraction.

Author: sciborrudnicki

src/lib/middleware-core.abstract.ts

@@ -0,0 +1,39 @@
+// Interface.
+import { MiddlewareShape } from "../interface/middleware.shape";
+/**
+ * @description
+ * @export
+ * @abstract
+ * @class MiddlewareCore
+ * @typedef {MiddlewareCore}
+ * @template [Input=any] 
+ * @template [Output=void] 
+ * @template [Middleware=any] 
+ * @implements {MiddlewareShape<Input, Middleware>}
+ */
+export abstract class MiddlewareCore<
+  Input = any,
+  Output = void,
+  Middleware = any
+> implements MiddlewareShape<Input, Output, Middleware> {
+  /**
+   * @description
+   * @public
+   * @abstract
+   * @param {...Input[]} args 
+   */
+  public abstract execute(context: Input): this;
+  public abstract execute(...args: Input[]): this;
+
+  /**
+   * @description
+   * @public
+   * @abstract
+   * @param {Middleware} middleware 
+   * @returns {this} 
+   */
+  public abstract use(middleware: Middleware): this;
+
+  public abstract executeAsync(context: Input): Promise<Output>;
+  public abstract executeAsync(...args: Input[]): Promise<Output>;
+}