init source

2022-03-07 22:07:57 +07:00
parent e4376f3777
commit 8aba590a8d
11240 changed files with 1012977 additions and 0 deletions
@@ -0,0 +1,15 @@
+import { ArgumentOutOfRangeError } from '../util/ArgumentOutOfRangeError';
+import { filter } from './filter';
+import { throwIfEmpty } from './throwIfEmpty';
+import { defaultIfEmpty } from './defaultIfEmpty';
+import { take } from './take';
+export function elementAt(index, defaultValue) {
+    if (index < 0) {
+        throw new ArgumentOutOfRangeError();
+    }
+    const hasDefaultValue = arguments.length >= 2;
+    return (source) => source.pipe(filter((v, i) => i === index), take(1), hasDefaultValue
+        ? defaultIfEmpty(defaultValue)
+        : throwIfEmpty(() => new ArgumentOutOfRangeError()));
+}
+//# sourceMappingURL=elementAt.js.map