Initial add from apps

packages/ui-keyring/src/defaults.ts

@@ -0,0 +1,34 @@
+// Copyright 2017-2018 @polkadot/ui-keyring authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { u8aToHex } from '@polkadot/util';
+import { decodeAddress } from '@polkadot/keyring';
+
+const ACCOUNT_PREFIX = 'account:';
+const ADDRESS_PREFIX = 'address:';
+const MAX_PASS_LEN = 32;
+
+function toHex (address: string): string {
+  return u8aToHex(
+    decodeAddress(address)
+  );
+}
+
+const accountKey = (address: string): string =>
+  `${ACCOUNT_PREFIX}${toHex(address)}`;
+
+const addressKey = (address: string): string =>
+  `${ADDRESS_PREFIX}${toHex(address)}`;
+
+const accountRegex = new RegExp(`^${ACCOUNT_PREFIX}`, '');
+
+const addressRegex = new RegExp(`^${ADDRESS_PREFIX}`, '');
+
+export {
+  accountKey,
+  accountRegex,
+  addressKey,
+  addressRegex,
+  MAX_PASS_LEN
+};