Bring in latest changes

actions-expressions/src/data/dictionary.test.ts

@@ -8,4 +8,12 @@ describe("dictionary", () => {
 
     expect(d.pairs()).toEqual([{ key: "ABC", value: new StringData("val") }]);
   });
+
+  it("does not add duplicate entries", () => {
+    const d = new Dictionary();
+    d.add("ABC", new StringData("val1"));
+    d.add("abc", new StringData("val2"));
+
+    expect(d.pairs()).toEqual([{ key: "ABC", value: new StringData("val1") }]);
+  });
 });

actions-expressions/src/data/dictionary.ts

@@ -30,7 +30,7 @@ export class Dictionary implements ExpressionDataInterface {
   }
 
   add(key: string, value: ExpressionData) {
-    if (this.indexMap[key.toLowerCase()]) {
+    if (key.toLowerCase() in this.indexMap) {
       return;
     }