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authorMinteck <contact@minteck.org>2023-01-10 14:54:04 +0100
committerMinteck <contact@minteck.org>2023-01-10 14:54:04 +0100
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+// @flow strict
+import objectEntries from '../polyfills/objectEntries';
+
+import type { ObjMap } from './ObjMap';
+
+/**
+ * Creates an object map with the same keys as `map` and values generated by
+ * running each value of `map` thru `fn`.
+ */
+export default function mapValue<T, V>(
+ map: ObjMap<T>,
+ fn: (value: T, key: string) => V,
+): ObjMap<V> {
+ const result = Object.create(null);
+
+ for (const [key, value] of objectEntries(map)) {
+ result[key] = fn(value, key);
+ }
+ return result;
+}