1 files changed, 21 insertions, 0 deletions
diff --git a/pkgs/development/tools/yarn2nix-moretea/yarn2nix/lib/mapObjIndexedReturnArray.js b/pkgs/development/tools/yarn2nix-moretea/yarn2nix/lib/mapObjIndexedReturnArray.js
new file mode 100644
index 00000000000..83c6634f7c8
--- /dev/null
+++ b/pkgs/development/tools/yarn2nix-moretea/yarn2nix/lib/mapObjIndexedReturnArray.js
@@ -0,0 +1,21 @@
+const _curry2 = require('ramda/src/internal/_curry2')
+const _map = require('ramda/src/internal/_map')
+const keys = require('ramda/src/keys')
+
+// mapObjIndexed: ((v, k, {k: v}) → v') → {k: v} → {k: v'}
+// mapObjIndexedReturnArray: ((v, k, {k: v}) → v') → {k: v} → [v']
+
+/*
+ * @example
+ *
+ *      const xyz = { x: 1, y: 2, z: 3 };
+ *      const prependKeyAndDouble = (num, key, obj) => key + (num * 2);
+ *
+ *      mapObjIndexedReturnArray(prependKeyAndDouble, xyz); //=> ['x2', 'y4', 'z6']
+ */
+
+const mapObjIndexedReturnArray = _curry2((fn, obj) =>
+  _map(key => fn(obj[key], key, obj), keys(obj)),
+)
+
+module.exports = mapObjIndexedReturnArray