Updated the files.

my-app/node_modules/rxjs/dist/cjs/internal/util/lift.js

@@ -0,0 +1,25 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.operate = exports.hasLift = void 0;
+var isFunction_1 = require("./isFunction");
+function hasLift(source) {
+    return isFunction_1.isFunction(source === null || source === void 0 ? void 0 : source.lift);
+}
+exports.hasLift = hasLift;
+function operate(init) {
+    return function (source) {
+        if (hasLift(source)) {
+            return source.lift(function (liftedSource) {
+                try {
+                    return init(liftedSource, this);
+                }
+                catch (err) {
+                    this.error(err);
+                }
+            });
+        }
+        throw new TypeError('Unable to lift unknown Observable type');
+    };
+}
+exports.operate = operate;
+//# sourceMappingURL=lift.js.map