refactor: move type utils to shared

packages/shared/src/index.ts

@@ -12,6 +12,7 @@ export * from './domAttrConfig'
 export * from './escapeHtml'
 export * from './looseEqual'
 export * from './toDisplayString'
+export * from './typeUtils'
 
 export const EMPTY_OBJ: { readonly [key: string]: any } = __DEV__
   ? Object.freeze({})

packages/shared/src/typeUtils.ts

@@ -0,0 +1,10 @@
+export type UnionToIntersection<U> = (
+  U extends any ? (k: U) => void : never
+) extends (k: infer I) => void
+  ? I
+  : never
+
+// make keys required but keep undefined values
+export type LooseRequired<T> = { [P in string & keyof T]: T[P] }
+
+export type IfAny<T, Y, N> = 0 extends (1 & T) ? Y : N