diff --git a/typescript/types/utility.d.ts b/typescript/types/utility.d.ts
new file mode 100644
index 000000000..9deabd118
--- /dev/null
+++ b/typescript/types/utility.d.ts
@@ -0,0 +1,5 @@
+type Omit<T, K extends keyof any> = Pick<T, Exclude<keyof T, K>>;
+
+type Pick<T, K extends keyof T> = {
+  [P in K]: T[P];
+};