diff --git a/examples/typescript/compound.ts b/examples/typescript/compound.ts
new file mode 100644
index 0000000..14846ab
--- /dev/null
+++ b/examples/typescript/compound.ts
@@ -0,0 +1,51 @@
+// 复合
+
+// let myVar: any = 1
+
+// myVar = ""
+
+// myVar = true
+
+let myVar: string | number = 1
+
+myVar = ""
+
+// myVar = false
+
+type ID = string | number
+
+let myID: ID = 1
+
+myID = ""
+
+
+interface Person {
+    name: string
+    age?: number
+}
+
+let obj2: Person = { name: 'foo', age: 12 }
+
+obj2 = { name: 'bar' }
+
+let ns: number[] = [1, 2, 3];
+
+
+let person: [string, number, boolean] = ["Alice", 30, true];
+
+enum Direction {
+    Up,
+    Down,
+    Left,
+    Right
+}
+
+let direction: Direction = Direction.Up
+
+
+enum Sizes {
+    Big,
+    Small
+}
+
+let size: Sizes = Sizes.Big
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