update

node_modules/rxjs/_esm2015/operators/race.js

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+import { isArray } from '../util/isArray';
+import { race as raceStatic } from '../observable/race';
+/* tslint:enable:max-line-length */
+/**
+ * Returns an Observable that mirrors the first source Observable to emit an item
+ * from the combination of this Observable and supplied Observables.
+ * @param {...Observables} ...observables Sources used to race for which Observable emits first.
+ * @return {Observable} An Observable that mirrors the output of the first Observable to emit an item.
+ * @method race
+ * @owner Observable
+ */
+export function race(...observables) {
+    return function raceOperatorFunction(source) {
+        // if the only argument is an array, it was most likely called with
+        // `pair([obs1, obs2, ...])`
+        if (observables.length === 1 && isArray(observables[0])) {
+            observables = observables[0];
+        }
+        return source.lift.call(raceStatic(source, ...observables));
+    };
+}
+//# sourceMappingURL=race.js.map