inital move of two ops

src/core/operations/SetIntersection.mjs

@@ -0,0 +1,33 @@
+import SetOp from "./SetOps";
+
+/**
+ * 
+ */
+class SetIntersection extends SetOp {
+
+    /**
+     * 
+     */
+    constructor() {
+        super();
+        this.setOp = this.runIntersection;
+
+        this.name = "Set Intersection";
+        this.description = "Get the intersection of two sets";
+    }
+
+    /**
+     * Get the intersection of the two sets.
+     *
+     * @param {Object[]} a
+     * @param {Object[]} b
+     * @returns {Object[]}
+     */
+    runIntersection(a, b) {
+        return a.filter((item) => {
+            return b.indexOf(item) > -1;
+        }).join(this.itemDelimiter);
+    }
+}
+
+export default SetIntersection;