Add memoize-util benchmark

perf/benchmarks/memoize-util/index.js

@@ -0,0 +1,22 @@
+const { default: memoize } = require('../../../lib/utils/memoize')
+
+module.exports = {
+  setup(state) {
+    let obj = {
+      fibonacci(n) {
+        if (n === 0 || n === 1) {
+          return n
+        } else {
+          return this.fibonacci(n - 1) + this.fibonacci(n - 2)
+        }
+      }
+    }
+
+    memoize(obj, ['fibonacci'])
+    return obj
+  },
+
+  run(obj) {
+    obj.fibonacci(20)
+  }
+}

perf/benchmarks/memoize-util/input.yaml

@@ -0,0 +1,6 @@
+nodes:
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: 'Useless input state'