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diff --git a/node_modules/@jet/environment/util/set.js b/node_modules/@jet/environment/util/set.js
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+++ b/node_modules/@jet/environment/util/set.js
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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.difference = exports.symmetricDifference = exports.intersection = exports.union = exports.isSuperset = void 0;
+/**
+ * Test if a Set contains all elements of another Set.
+ *
+ * @param set -
+ * @param subset -
+ *
+ * @returns True if set contains all elements of subset, otherwise false.
+ */
+function isSuperset(set, subset) {
+    for (const elem of subset) {
+        if (!set.has(elem)) {
+            return false;
+        }
+    }
+    return true;
+}
+exports.isSuperset = isSuperset;
+/**
+ * Construct the union of two Sets.
+ *
+ * @param setA -
+ * @param setB -
+ *
+ * @returns A new Set containing all elements from setA and setB.
+ */
+function union(setA, setB) {
+    const result = new Set(setA);
+    for (const elem of setB) {
+        result.add(elem);
+    }
+    return result;
+}
+exports.union = union;
+/**
+ * Construct the intersection of two Sets.
+ *
+ * @param setA -
+ * @param setB -
+ *
+ * @returns A new Set containing only those elements which appear in both setA and setB.
+ */
+function intersection(setA, setB) {
+    const result = new Set();
+    for (const elem of setB) {
+        if (setA.has(elem)) {
+            result.add(elem);
+        }
+    }
+    return result;
+}
+exports.intersection = intersection;
+/**
+ * Construct the symmetric difference (XOR) of two Sets.
+ *
+ * @param setA -
+ * @param setB -
+ *
+ * @returns A new Set containing only those elements which appear in setA or in setB but not in both setA and setB.
+ */
+function symmetricDifference(setA, setB) {
+    const result = new Set(setA);
+    for (const elem of setB) {
+        if (result.has(elem)) {
+            result.delete(elem);
+        }
+        else {
+            result.add(elem);
+        }
+    }
+    return result;
+}
+exports.symmetricDifference = symmetricDifference;
+/**
+ * Construct the difference of two Sets.
+ *
+ * @param setA -
+ * @param setB -
+ *
+ * @returns A new Set containing the elements of setA which do not appear in setB.
+ */
+function difference(setA, setB) {
+    const result = new Set(setA);
+    for (const elem of setB) {
+        result.delete(elem);
+    }
+    return result;
+}
+exports.difference = difference;
+//# sourceMappingURL=set.js.map
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