WIP - add extractor, generate snippet_data

node_modules/fbjs/lib/shallowEqual.js

@@ -0,0 +1,65 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @typechecks
+ * 
+ */
+
+/*eslint-disable no-self-compare */
+'use strict';
+
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+/**
+ * inlined Object.is polyfill to avoid requiring consumers ship their own
+ * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
+ */
+
+function is(x, y) {
+  // SameValue algorithm
+  if (x === y) {
+    // Steps 1-5, 7-10
+    // Steps 6.b-6.e: +0 != -0
+    // Added the nonzero y check to make Flow happy, but it is redundant
+    return x !== 0 || y !== 0 || 1 / x === 1 / y;
+  } else {
+    // Step 6.a: NaN == NaN
+    return x !== x && y !== y;
+  }
+}
+/**
+ * Performs equality by iterating through keys on an object and returning false
+ * when any key has values which are not strictly equal between the arguments.
+ * Returns true when the values of all keys are strictly equal.
+ */
+
+
+function shallowEqual(objA, objB) {
+  if (is(objA, objB)) {
+    return true;
+  }
+
+  if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) {
+    return false;
+  }
+
+  var keysA = Object.keys(objA);
+  var keysB = Object.keys(objB);
+
+  if (keysA.length !== keysB.length) {
+    return false;
+  } // Test for A's keys different from B.
+
+
+  for (var i = 0; i < keysA.length; i++) {
+    if (!hasOwnProperty.call(objB, keysA[i]) || !is(objA[keysA[i]], objB[keysA[i]])) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+module.exports = shallowEqual;