@alloc/types - npm Package Compare versions

Comparing version 2.0.0 to 2.1.0

index.d.ts

@@ -52,15 +52,22 @@ /** Try to simplify `&` out of an object type */
 
-/** Intersect a union of objects but merge property types with _unions_ */
-export type ObjectFromUnion<T extends object> = Remap<
-  {
-    [P in keyof Intersect<T>]: T extends infer U
-      ? P extends keyof U
-        ? U[P]
-        : never
-      : never
-  }
->
+/** Get the keys of each object type in a given union */
+export type AllKeys<T> = T extends any ? keyof T : never
 
+/** Merge all object types in a given union. Property types are unioned. */
+export type CombineObjects<T> = [AllKeys<T>] extends [infer U]
+  ? { [P in U & string]: CombineProp<T, P> }
+  : never
+
+/**
+ * Given a union of object types, find which ones contain the given
+ * property and merge their types with a union.
+ */
+export type CombineProp<T, P extends string> = T extends any
+  ? P extends keyof T
+    ? T[P]
+    : never
+  : never
+
 /** Convert a union to an intersection */
-type Intersect<U> = (U extends any
+export type Intersect<U> = (U extends any
 ? (k: U) => void
@@ -67,0 +74,0 @@ : never) extends (k: infer I) => void

package.json

 {
   "name": "@alloc/types",
-  "version": "2.0.0",
+  "version": "2.1.0",
   "types": "index.d.ts",
@@ -5,0 +5,0 @@ "files": [

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Improved metrics

Total package byte prevSize

5278

increased by5.96%

Lines of code

89

increased by5.95%

No dependency changes