From 1ea7f265388b2254fac76f54846b94e0a2c202ea Mon Sep 17 00:00:00 2001
From: Take Weiland <diesieben07@gmail.com>
Date: Wed, 15 Sep 2021 17:10:22 +0200
Subject: [PATCH 1/2] feat: allow ReadonlyArray as input

---
 src/index.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/index.ts b/src/index.ts
index b5e4dbb..66118da 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -82,7 +82,7 @@ const defaultBaseSortFn: BaseSorter<unknown> = (a, b) =>
  * @return {Array} - the new sorted array
  */
 function matchSorter<ItemType = string>(
-  items: Array<ItemType>,
+  items: ReadonlyArray<ItemType>,
   value: string,
   options: MatchSorterOptions<ItemType> = {},
 ): Array<ItemType> {

From 3a49b4391ba40515d7a9e83b56b458d7097b4b62 Mon Sep 17 00:00:00 2001
From: Take Weiland <diesieben07@gmail.com>
Date: Wed, 15 Sep 2021 17:17:14 +0200
Subject: [PATCH 2/2] feat: allow ReadonlyArray for keys option

---
 src/index.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index 66118da..7a20218 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -48,7 +48,7 @@ type KeyOption<ItemType> =
   | string
 
 interface MatchSorterOptions<ItemType = unknown> {
-  keys?: Array<KeyOption<ItemType>>
+  keys?: ReadonlyArray<KeyOption<ItemType>>
   threshold?: Ranking
   baseSort?: BaseSorter<ItemType>
   keepDiacritics?: boolean
@@ -120,7 +120,7 @@ function matchSorter<ItemType = string>(
  */
 function getHighestRanking<ItemType>(
   item: ItemType,
-  keys: Array<KeyOption<ItemType>> | undefined,
+  keys: ReadonlyArray<KeyOption<ItemType>> | undefined,
   value: string,
   options: MatchSorterOptions<ItemType>,
 ): RankingInfo {
@@ -445,7 +445,7 @@ function getNestedValues<ItemType>(
  */
 function getAllValuesToRank<ItemType>(
   item: ItemType,
-  keys: Array<KeyOption<ItemType>>,
+  keys: ReadonlyArray<KeyOption<ItemType>>,
 ) {
   const allValues: Array<{itemValue: string; attributes: KeyAttributes}> = []
   for (let j = 0, J = keys.length; j < J; j++) {