refactor(Cypress): add nodemodules

node_modules/stack-chain/benchmark.js

@@ -0,0 +1,55 @@
+
+var chain = require('./stack-chain.js');
+var summary = require('summary');
+var assert = require('assert');
+
+function timeit(top, doit) {
+    var times = new Float64Array(top);
+    var total = 0;
+
+    for (var i = 0; i < top; i++) {
+        var tick = process.hrtime();
+        total += doit().length;
+        var tock = process.hrtime(tick);
+        times[i] = tock[0] * 1e9 + tock[1];
+    }
+
+    assert(total, top * doit().length);
+    return summary(times);
+}
+
+({
+    'master': function () {
+        var fork = require('child_process').fork;
+
+        function bench(name, callback) {
+            var cp = fork(__filename, [name]);
+            cp.once('message', function (stat) {
+                console.log(name + ': ' + stat.mean.toFixed(4) + ' ± ' + (1.96 * stat.sd).toFixed(4) + ' ns/tick');
+            });
+            cp.once('close', callback);
+        }
+
+        bench('propery', function () {
+            bench('method', function () {
+                console.log('done');
+            });
+        });
+    },
+
+    'propery': function () {
+        var top = 10000;
+        var stat = timeit(top, function () {
+            return (new Error()).callSite.original;
+        });
+        process.send({ "mean": stat.mean(), "sd": stat.sd() });
+    },
+
+    'method': function () {
+        var top = 100000;
+        var stat = timeit(top, function () {
+            return chain.callSite();
+        });
+        process.send({ "mean": stat.mean(), "sd": stat.sd() });
+    }
+})[process.argv[2] || 'master']();