JsonValue: Fix support for readonly arrays (#549)

sindresorhus · Jan 30, 2023 · 311051c · 311051c
1 parent 9284359
commit 311051c
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/source/basic.d.ts b/source/basic.d.ts
@@ -26,7 +26,7 @@ Matches a JSON array.
 
 @category JSON
 */
-export type JsonArray = JsonValue[];
+export type JsonArray = JsonValue[] | readonly JsonValue[];
 
 /**
 Matches any valid JSON primitive value.

diff --git a/test-d/jsonify.ts b/test-d/jsonify.ts
@@ -47,6 +47,7 @@ expectAssignable<JsonValue>(false);
 expectAssignable<JsonValue>(0);
 expectAssignable<JsonValue>('');
 expectAssignable<JsonValue>([]);
+expectAssignable<JsonValue>([] as const);
 expectAssignable<JsonValue>({});
 expectAssignable<JsonValue>([0]);
 expectAssignable<JsonValue>({a: 0});