初始化项目

src/typings/common.d.ts

@@ -0,0 +1,25 @@
+/** The common type namespace */
+declare namespace CommonType {
+  /** The strategic pattern */
+  interface StrategicPattern {
+    /** The condition */
+    condition: boolean;
+    /** If the condition is true, then call the action function */
+    callback: () => void;
+  }
+
+  /**
+   * The option type
+   *
+   * @property value: The option value
+   * @property label: The option label
+   */
+  type Option<K = string> = { value: K; label: string };
+
+  type YesOrNo = 'Y' | 'N';
+
+  /** add null to all properties */
+  type RecordNullable<T> = {
+    [K in keyof T]?: T[K] | null;
+  };
+}