feat: add rudimentary Array.flat

ref: facebook#6948
nnmrts · Dec 17, 2019 · 296eeb0 · 296eeb0
1 parent 603a727
commit 296eeb0
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/core.js b/lib/core.js
@@ -234,7 +234,7 @@ declare class $ReadOnlyArray<+T> {
     lastIndexOf(searchElement: mixed, fromIndex?: number): number;
     map<U>(callbackfn: (value: T, index: number, array: $ReadOnlyArray<T>) => U, thisArg?: any): Array<U>;
     flatMap<U>(callbackfn: (value: T, index: number, array: $ReadOnlyArray<T>) => $ReadOnlyArray<U> | U, thisArg?: any): Array<U>;
-
+    flat(depth?: number): Array<mixed>;
     reduce(
       callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: $ReadOnlyArray<T>) => T,
     ): T;