misc: restructure contents

experimental/utilities/javascript/deepEqual.js

@@ -0,0 +1,43 @@
+function deepEqual(val1, val2) {
+  if (typeof val1 !== typeof val2) {
+    return false;
+  }
+
+  // Array comparison.
+  if (Array.isArray(val1) && Array.isArray(val2)) {
+    if (val1.length !== val2.length) {
+      return false;
+    }
+    for (let i = 0; i < val1.length; i++) {
+      if (!deepEqual(val1[i], val2[i])) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  // Object comparison.
+  if (
+    typeof val1 === 'object' &&
+    typeof val2 === 'object' &&
+    val1 !== null &&
+    val2 !== null
+  ) {
+    const keys1 = Object.keys(val1),
+      keys2 = Object.keys(val2);
+    if (keys1.length !== keys2.length) {
+      return false;
+    }
+    for (let i = 0; i < keys1.length; i++) {
+      if (!deepEqual(val1[keys1[i]], val2[keys2[i]])) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  // Primitive comparison.
+  return val1 === val2;
+}
+
+module.exports = deepEqual;