Rename files

ts/util/parseRetryAfter.std.ts

@@ -0,0 +1,33 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { SECOND, MINUTE } from './durations/index.std.js';
+import { isNormalNumber } from './isNormalNumber.std.js';
+
+const DEFAULT_RETRY_AFTER = MINUTE;
+const MINIMAL_RETRY_AFTER = SECOND;
+
+export function parseRetryAfterWithDefault(
+  value: unknown,
+  defaultValue: number = DEFAULT_RETRY_AFTER
+): number {
+  const retryAfter = parseRetryAfter(value);
+  if (retryAfter === undefined) {
+    return defaultValue;
+  }
+
+  return Math.max(retryAfter, MINIMAL_RETRY_AFTER);
+}
+
+export function parseRetryAfter(value: unknown): number | undefined {
+  if (typeof value !== 'string') {
+    return undefined;
+  }
+
+  const retryAfter = parseInt(value, 10);
+  if (!isNormalNumber(retryAfter) || retryAfter.toString() !== value) {
+    return undefined;
+  }
+
+  return retryAfter * SECOND;
+}