Added utility types for recursively making types all optional or required

Author: squidfunk

CHANGELOG

@@ -1,6 +1,10 @@
+isotopes-0.x.x (2018-xx-xx)
+
+  * Added utility types for recursively making types all optional or required
+
 isotopes-0.3.1 (2018-07-30)
 
-  * Fixed handling of undefined values in where conditions
+  * Fixed handling of undefined values in WHERE clauses
 
 isotopes-0.3.0 (2018-07-30)
 

src/index.ts

@@ -26,11 +26,13 @@
 
 export {
   Isotope,
-  IsotopeOptions
+  IsotopeOptions,
+  IsotopeResult
 } from "./isotopes"
+export { IsotopeClientOptions } from "./isotopes/client"
+export { IsotopeFormatOptions } from "./isotopes/format"
+export { IsotopeSelect } from "./isotopes/select"
 export {
-  IsotopeClientOptions
-} from "./isotopes/client"
-export {
-  IsotopeFormatOptions
-} from "./isotopes/format"
+  DeepPartial,
+  DeepRequired
+} from "./isotopes/utilities"

src/isotopes/utilities/index.ts

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2018 Martin Donath <martin.donath@squidfunk.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+/* ----------------------------------------------------------------------------
+ * Types
+ * ------------------------------------------------------------------------- */
+
+/**
+ * Recursively make all keys in an array type required
+ *
+ * @template T - Data type
+ */
+interface DeepRequiredArray<T> extends Array<DeepRequired<T>> {}
+
+/* ------------------------------------------------------------------------- */
+
+/**
+ * Recursively make all keys in a type required
+ *
+ * @template T - Data type
+ */
+export type DeepRequired<T> =
+  T extends any[] ? DeepRequiredArray<T[number]> :
+  T extends {} ? {
+    [K in keyof T]-?: DeepRequired<T[K]>;
+  } : T
+
+/**
+ * Recursively make all keys in a type optional
+ *
+ * @template T - Data type
+ */
+export type DeepPartial<T> = {
+  [P in keyof T]?: T[P] extends Array<infer U>
+    ? Array<DeepPartial<U>>
+    : T[P] extends ReadonlyArray<infer V>
+      ? ReadonlyArray<DeepPartial<V>>
+      : DeepPartial<T[P]>
+}