From 23787ae4b6a233ede97dd86401452f9047c12aa6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Artur=20M=C3=BCller?= <me@arturmuller.com>
Date: Fri, 3 Nov 2023 23:09:12 +0100
Subject: [PATCH] Allow frozen objects/arrays to be coerced
 (ianstormtaylor/superstruct#1151)

* Update tuple coercer
* Update record coercer
* Add frozen objects/arrays tests
---
 src/structs/types.ts                   |  6 ++++++
 test/validation/array/valid-frozen.ts  |  9 +++++++++
 test/validation/object/valid-frozen.ts | 18 ++++++++++++++++++
 test/validation/record/valid-frozen.ts | 15 +++++++++++++++
 test/validation/tuple/valid-frozen.ts  |  9 +++++++++
 test/validation/type/valid-frozen.ts   | 18 ++++++++++++++++++
 6 files changed, 75 insertions(+)
 create mode 100644 test/validation/array/valid-frozen.ts
 create mode 100644 test/validation/object/valid-frozen.ts
 create mode 100644 test/validation/record/valid-frozen.ts
 create mode 100644 test/validation/tuple/valid-frozen.ts
 create mode 100644 test/validation/type/valid-frozen.ts

diff --git a/src/structs/types.ts b/src/structs/types.ts
index 8bcc0ef3..c4571185 100644
--- a/src/structs/types.ts
+++ b/src/structs/types.ts
@@ -366,6 +366,9 @@ export function record<K extends string, V>(
         isObject(value) || `Expected an object, but received: ${print(value)}`
       )
     },
+    coercer(value) {
+      return isObject(value) ? { ...value } : value
+    },
   })
 }
 
@@ -453,6 +456,9 @@ export function tuple<A extends AnyStruct, B extends AnyStruct[]>(
         `Expected an array, but received: ${print(value)}`
       )
     },
+    coercer(value) {
+      return Array.isArray(value) ? value.slice() : value
+    },
   })
 }
 
diff --git a/test/validation/array/valid-frozen.ts b/test/validation/array/valid-frozen.ts
new file mode 100644
index 00000000..814291fe
--- /dev/null
+++ b/test/validation/array/valid-frozen.ts
@@ -0,0 +1,9 @@
+import { array, number } from '../../../src'
+
+export const Struct = array(number())
+
+export const data = Object.freeze([1, 2, 3])
+
+export const output = [1, 2, 3]
+
+export const create = true
diff --git a/test/validation/object/valid-frozen.ts b/test/validation/object/valid-frozen.ts
new file mode 100644
index 00000000..462de9f1
--- /dev/null
+++ b/test/validation/object/valid-frozen.ts
@@ -0,0 +1,18 @@
+import { object, string, number } from '../../../src'
+
+export const Struct = object({
+  name: string(),
+  age: number(),
+})
+
+export const data = Object.freeze({
+  name: 'john',
+  age: 42,
+})
+
+export const output = {
+  name: 'john',
+  age: 42,
+}
+
+export const create = true
diff --git a/test/validation/record/valid-frozen.ts b/test/validation/record/valid-frozen.ts
new file mode 100644
index 00000000..1bb5bd83
--- /dev/null
+++ b/test/validation/record/valid-frozen.ts
@@ -0,0 +1,15 @@
+import { record, string, number } from '../../../src'
+
+export const Struct = record(string(), number())
+
+export const data = Object.freeze({
+  a: 1,
+  b: 2,
+})
+
+export const output = {
+  a: 1,
+  b: 2,
+}
+
+export const create = true
diff --git a/test/validation/tuple/valid-frozen.ts b/test/validation/tuple/valid-frozen.ts
new file mode 100644
index 00000000..b084af38
--- /dev/null
+++ b/test/validation/tuple/valid-frozen.ts
@@ -0,0 +1,9 @@
+import { tuple, string, number } from '../../../src'
+
+export const Struct = tuple([string(), number()])
+
+export const data = Object.freeze(['A', 1])
+
+export const output = ['A', 1]
+
+export const create = true
diff --git a/test/validation/type/valid-frozen.ts b/test/validation/type/valid-frozen.ts
new file mode 100644
index 00000000..cdb08dbc
--- /dev/null
+++ b/test/validation/type/valid-frozen.ts
@@ -0,0 +1,18 @@
+import { type, string, number } from '../../../src'
+
+export const Struct = type({
+  name: string(),
+  age: number(),
+})
+
+export const data = Object.freeze({
+  name: 'john',
+  age: 42,
+})
+
+export const output = {
+  name: 'john',
+  age: 42,
+}
+
+export const create = true