flow like the river

BACK_BACK/node_modules/graphql/jsutils/toObjMap.js.flow

@@ -0,0 +1,26 @@
+// @flow strict
+import objectEntries from '../polyfills/objectEntries';
+
+import type {
+  ObjMap,
+  ObjMapLike,
+  ReadOnlyObjMap,
+  ReadOnlyObjMapLike,
+} from './ObjMap';
+
+/* eslint-disable no-redeclare */
+declare function toObjMap<T>(obj: ObjMapLike<T>): ObjMap<T>;
+declare function toObjMap<T>(obj: ReadOnlyObjMapLike<T>): ReadOnlyObjMap<T>;
+
+export default function toObjMap(obj) {
+  /* eslint-enable no-redeclare */
+  if (Object.getPrototypeOf(obj) === null) {
+    return obj;
+  }
+
+  const map = Object.create(null);
+  for (const [key, value] of objectEntries(obj)) {
+    map[key] = value;
+  }
+  return map;
+}