change "if" to "switch"

src/actions/BlockchainActions.js

@@ -51,10 +51,14 @@ export const subscribe = (networkName: string): PromiseAction<void> => async (di
     const network = config.networks.find(c => c.shortcut === networkName);
     if (!network) return;
 
-    if (network.type === 'ethereum') {
+    switch (network.type) {
+        case 'ethereum':
             await dispatch(EthereumBlockchainActions.subscribe(networkName));
-    } else if (network.type === 'ripple') {
+            break;
+        case 'ripple':
             await dispatch(RippleBlockchainActions.subscribe(networkName));
+            break;
+        default: break;
     }
 };
 
@@ -66,10 +70,14 @@ export const onBlockMined = (payload: $ElementType<BlockchainBlock, 'payload'>):
     const network = config.networks.find(c => c.shortcut === shortcut);
     if (!network) return;
 
-    if (network.type === 'ethereum') {
+    switch (network.type) {
+        case 'ethereum':
             await dispatch(EthereumBlockchainActions.onBlockMined(shortcut));
-    } else if (network.type === 'ripple') {
+            break;
+        case 'ripple':
             await dispatch(RippleBlockchainActions.onBlockMined(shortcut));
+            break;
+        default: break;
     }
 };
 
@@ -79,10 +87,15 @@ export const onNotification = (payload: $ElementType<BlockchainNotification, 'pa
     const network = config.networks.find(c => c.shortcut === shortcut);
     if (!network) return;
 
-    if (network.type === 'ethereum') {
+    switch (network.type) {
+        case 'ethereum':
+            // this is not working until blockchain-link will start support blockbook backends
             await dispatch(EthereumBlockchainActions.onNotification());
-    } else if (network.type === 'ripple') {
+            break;
+        case 'ripple':
             await dispatch(RippleBlockchainActions.onNotification(payload));
+            break;
+        default: break;
     }
 };
 
@@ -94,9 +107,14 @@ export const onError = (payload: $ElementType<BlockchainError, 'payload'>): Prom
     const network = config.networks.find(c => c.shortcut === shortcut);
     if (!network) return;
 
-    if (network.type === 'ethereum') {
+    switch (network.type) {
+        case 'ethereum':
             await dispatch(EthereumBlockchainActions.onError(shortcut));
-    } else if (network.type === 'ripple') {
+            break;
-        // await dispatch(RippleBlockchainActions.onError(shortcut));
+        case 'ripple':
+            // this error is handled in BlockchainReducer
+            // await dispatch(RippleBlockchainActions.onBlockMined(shortcut));
+            break;
+        default: break;
     }
 };

src/actions/DiscoveryActions.js

@@ -131,11 +131,14 @@ const begin = (device: TrezorDevice, networkName: string): AsyncAction => async
     let startAction: DiscoveryStartAction;
 
     try {
-        if (network.type === 'ethereum') {
+        switch (network.type) {
+            case 'ethereum':
                 startAction = await dispatch(EthereumDiscoveryActions.begin(device, network));
-        } else if (network.type === 'ripple') {
+                break;
+            case 'ripple':
                 startAction = await dispatch(RippleDiscoveryActions.begin(device, network));
-        } else {
+                break;
+            default:
                 throw new Error(`DiscoveryActions.begin: Unknown network type: ${network.type}`);
         }
     } catch (error) {
@@ -180,11 +183,14 @@ const discoverAccount = (device: TrezorDevice, discoveryProcess: Discovery): Asy
     const { completed, accountIndex } = discoveryProcess;
     let account: Account;
     try {
-        if (network.type === 'ethereum') {
+        switch (network.type) {
+            case 'ethereum':
                 account = await dispatch(EthereumDiscoveryActions.discoverAccount(device, discoveryProcess));
-        } else if (network.type === 'ripple') {
+                break;
+            case 'ripple':
                 account = await dispatch(RippleDiscoveryActions.discoverAccount(device, discoveryProcess));
-        } else {
+                break;
+            default:
                 throw new Error(`DiscoveryActions.discoverAccount: Unknown network type: ${network.type}`);
         }
     } catch (error) {

src/actions/ReceiveActions.js

@@ -73,13 +73,19 @@ export const showAddress = (path: Array<number>): AsyncAction => async (dispatch
     };
 
     let response;
-    if (network.type === 'ethereum') {
+    switch (network.type) {
+        case 'ethereum':
             response = await TrezorConnect.ethereumGetAddress(params);
-    } else {
+            break;
+        case 'ripple':
             response = await TrezorConnect.rippleGetAddress(params);
+            break;
+        default:
+            response = { payload: { error: `ReceiveActions.showAddress: Unknown network type: ${network.type}` } };
+            break;
     }
 
-    if (response && response.success) {
+    if (response.success) {
         dispatch({
             type: RECEIVE.SHOW_ADDRESS,
         });

src/components/modals/index.js

@@ -89,8 +89,14 @@ const getDeviceContextModal = (props: Props) => {
             return <PassphraseType device={modal.device} />;
 
         case 'ButtonRequest_SignTx': {
-            const sendForm = props.selectedAccount.network && props.selectedAccount.network.type === 'ethereum' ? props.sendFormEthereum : props.sendFormRipple;
+            if (!props.selectedAccount.network) return null;
-            return <ConfirmSignTx device={modal.device} sendForm={sendForm} />;
+            switch (props.selectedAccount.network.type) {
+                case 'ethereum':
+                    return <ConfirmSignTx device={modal.device} sendForm={props.sendFormEthereum} />;
+                case 'ripple':
+                    return <ConfirmSignTx device={modal.device} sendForm={props.sendFormRipple} />;
+                default: return null;
+            }
         }
 
         case 'ButtonRequest_ProtectCall':