BREAKING(std): reorganization (#5087)

* Prepend underscores to private modules
* Remove collectUint8Arrays() It would be a misuse of Deno.iter()'s result.
* Move std/_util/async.ts to std/async
* Move std/util/sha*.ts to std/hash

1 files changed, 9 insertions, 0 deletions

diff --git a/std/async/delay.ts b/std/async/delay.ts
new file mode 100644
index 000000000..e3aec368f
--- /dev/null
+++ b/std/async/delay.ts
@@ -0,0 +1,9 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+/* Resolves after the given number of milliseconds. */
+export function delay(ms: number): Promise<void> {
+  return new Promise((res): number =>
+    setTimeout((): void => {
+      res();
+    }, ms)
+  );
+}