Updated the files.

my-app/node_modules/rxjs/dist/esm5/internal/util/pipe.js

@@ -0,0 +1,20 @@
+import { identity } from './identity';
+export function pipe() {
+    var fns = [];
+    for (var _i = 0; _i < arguments.length; _i++) {
+        fns[_i] = arguments[_i];
+    }
+    return pipeFromArray(fns);
+}
+export function pipeFromArray(fns) {
+    if (fns.length === 0) {
+        return identity;
+    }
+    if (fns.length === 1) {
+        return fns[0];
+    }
+    return function piped(input) {
+        return fns.reduce(function (prev, fn) { return fn(prev); }, input);
+    };
+}
+//# sourceMappingURL=pipe.js.map