Split Ledger (& transports) into package (#399)

* Split Ledger (& transports) into package

* Fix browser/node resolution

* Bump

packages/ledger-transports/src/browser.ts

@@ -0,0 +1,24 @@
+// Copyright 2017-2020 @polkadot/ledger authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { TransportDef } from './types';
+
+import Transport from '@ledgerhq/hw-transport';
+import LedgerWebUSB from '@ledgerhq/hw-transport-webusb';
+
+const transports: TransportDef[] = [
+  // deprecated
+  // import LedgerU2F from '@ledgerhq/hw-transport-u2f';
+  // {
+  //   create: (): Promise<Transport> =>
+  //     LedgerU2F.create(),
+  //   type: 'u2f'
+  // },
+  {
+    create: (): Promise<Transport> =>
+      LedgerWebUSB.create(),
+    type: 'webusb'
+  }
+];
+
+export default transports;

packages/ledger-transports/src/node.ts

@@ -0,0 +1,17 @@
+// Copyright 2017-2020 @polkadot/ledger authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { TransportDef } from './types';
+
+import Transport from '@ledgerhq/hw-transport';
+import LedgerHid from '@ledgerhq/hw-transport-node-hid';
+
+const transports: TransportDef[] = [
+  {
+    create: (): Promise<Transport> =>
+      LedgerHid.create(),
+    type: 'hid'
+  }
+];
+
+export default transports;

packages/ledger-transports/src/react-native.ts

@@ -0,0 +1,8 @@
+// Copyright 2017-2020 @polkadot/ledger authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { TransportDef } from './types';
+
+const transports: TransportDef[] = [];
+
+export default transports;

packages/ledger-transports/src/types.ts

@@ -0,0 +1,11 @@
+// Copyright 2017-2020 @polkadot/ledger authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import Transport from '@ledgerhq/hw-transport';
+
+export type LedgerTypes = 'hid' | 'u2f' | 'webusb';
+
+export interface TransportDef {
+  create (): Promise<Transport>;
+  type: LedgerTypes;
+}