Stronger model typings

1 files changed, 13 insertions, 1 deletions

diff --git a/server/typings/utils.ts b/server/typings/utils.ts
index a86b05be2..ed0fca3d1 100644
--- a/server/typings/utils.ts
+++ b/server/typings/utils.ts
@@ -1,3 +1,15 @@
-export type FunctionPropertyNames<T> = { [K in keyof T]: T[K] extends Function ? K : never }[keyof T]
+export type FunctionPropertyNames<T> = {
+  [K in keyof T]: T[K] extends Function ? K : never
+}[keyof T]
 
 export type FunctionProperties<T> = Pick<T, FunctionPropertyNames<T>>
+
+export type ValueOf <T, KT extends keyof T> = T[KT]
+
+export type PickWith<T, KT extends keyof T, V> = {
+  [P in KT]: T[P] extends V ? V : never
+}
+
+export type PickWithOpt<T, KT extends keyof T, V> = {
+  [P in KT]?: T[P] extends V ? V : never
+}