shared/ typescript types dir server-commands

2 files changed, 46 insertions, 0 deletions

diff --git a/shared/typescript-utils/index.ts b/shared/typescript-utils/index.ts
new file mode 100644
index 000000000..c9f6f047d
--- /dev/null
+++ b/shared/typescript-utils/index.ts
@@ -0,0 +1 @@
+export * from './types'
diff --git a/shared/typescript-utils/types.ts b/shared/typescript-utils/types.ts
new file mode 100644
index 000000000..bd2a97b98
--- /dev/null
+++ b/shared/typescript-utils/types.ts
@@ -0,0 +1,45 @@
+/* eslint-disable @typescript-eslint/array-type */
+
+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 AttributesOnly<T> = {
+  [K in keyof T]: T[K] extends Function ? never : T[K]
+}
+
+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
+}
+
+// https://github.com/krzkaczor/ts-essentials Rocks!
+export type DeepPartial<T> = {
+  [P in keyof T]?: T[P] extends Array<infer U>
+    ? Array<DeepPartial<U>>
+    : T[P] extends ReadonlyArray<infer U>
+      ? ReadonlyArray<DeepPartial<U>>
+      : DeepPartial<T[P]>
+}
+
+type Primitive = string | Function | number | boolean | Symbol | undefined | null
+export type DeepOmitHelper<T, K extends keyof T> = {
+  [P in K]: // extra level of indirection needed to trigger homomorhic behavior
+  T[P] extends infer TP // distribute over unions
+    ? TP extends Primitive
+      ? TP // leave primitives and functions alone
+      : TP extends any[]
+        ? DeepOmitArray<TP, K> // Array special handling
+        : DeepOmit<TP, K>
+    : never
+}
+export type DeepOmit<T, K> = T extends Primitive ? T : DeepOmitHelper<T, Exclude<keyof T, K>>
+
+export type DeepOmitArray<T extends any[], K> = {
+  [P in keyof T]: DeepOmit<T[P], K>
+}