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1 files changed, 24 insertions, 0 deletions

diff --git a/node_modules/es-abstract/test/diffOps.js b/node_modules/es-abstract/test/diffOps.js
new file mode 100644
index 00000000..2d870897
--- /dev/null
+++ b/node_modules/es-abstract/test/diffOps.js
@@ -0,0 +1,24 @@
+'use strict';
+
+var keys = require('object-keys');
+var forEach = require('foreach');
+
+module.exports = function diffOperations(actual, expected, expectedMissing) {
+	var actualKeys = keys(actual);
+	var expectedKeys = keys(expected);
+
+	var extra = [];
+	var missing = [];
+	forEach(actualKeys, function (op) {
+		if (!(op in expected)) {
+			extra.push(op);
+		}
+	});
+	forEach(expectedKeys, function (op) {
+		if (!(op in actual) && expectedMissing.indexOf(op) === -1) {
+			missing.push(op);
+		}
+	});
+
+	return { missing: missing, extra: extra };
+};