diff --git a/src/Common/TypeOperator.ts b/src/Common/TypeOperator.ts
new file mode 100644
index 000000000..942c7f22e
--- /dev/null
+++ b/src/Common/TypeOperator.ts
@@ -0,0 +1,9 @@
+/*
+Typescript 类型操作工具
+*/
+
+/*
+由于继承不能修改基类型,所以使用这个来修改基类型,并且可以拓展类型
+https://stackoverflow.com/questions/41285211/overriding-interface-property-type-defined-in-typescript-d-ts-file
+*/
+export type Merge<T, R> = Pick<T, Exclude<keyof T, keyof R>> & R;