Node.js v11.13.0

1 files changed, 49 insertions, 0 deletions

diff --git a/deps/node/benchmark/es/destructuring-object-bench.js b/deps/node/benchmark/es/destructuring-object-bench.js
new file mode 100644
index 00000000..0c5615fd
--- /dev/null
+++ b/deps/node/benchmark/es/destructuring-object-bench.js
@@ -0,0 +1,49 @@
+'use strict';
+
+const common = require('../common.js');
+
+const bench = common.createBenchmark(main, {
+  method: ['normal', 'destructureObject'],
+  n: [1e8]
+});
+
+function runNormal(n) {
+  var i = 0;
+  const o = { x: 0, y: 1 };
+  bench.start();
+  for (; i < n; i++) {
+    /* eslint-disable no-unused-vars */
+    const x = o.x;
+    const y = o.y;
+    const r = o.r || 2;
+    /* eslint-enable no-unused-vars */
+  }
+  bench.end(n);
+}
+
+function runDestructured(n) {
+  var i = 0;
+  const o = { x: 0, y: 1 };
+  bench.start();
+  for (; i < n; i++) {
+    /* eslint-disable no-unused-vars */
+    const { x, y, r = 2 } = o;
+    /* eslint-enable no-unused-vars */
+  }
+  bench.end(n);
+}
+
+function main({ n, method }) {
+  switch (method) {
+    case '':
+      // Empty string falls through to next line as default, mostly for tests.
+    case 'normal':
+      runNormal(n);
+      break;
+    case 'destructureObject':
+      runDestructured(n);
+      break;
+    default:
+      throw new Error(`Unexpected method "${method}"`);
+  }
+}