Errors for i18n

should protect the i18n with a ''

src/api/Ethereum.js

@@ -1,8 +1,11 @@
 // @flow
 import type { CryptoCurrency } from '@ledgerhq/live-common/lib/types'
+import createCustomErrorClass from 'helpers/createCustomErrorClass'
 import network from './network'
 import { blockchainBaseURL } from './Ledger'
 
+export const LedgerAPINotAvailable = createCustomErrorClass('LedgerAPINotAvailable')
+
 export type Block = { height: number } // TODO more fields actually
 export type Tx = {
   hash: string,
@@ -42,7 +45,9 @@ export type API = {
 export const apiForCurrency = (currency: CryptoCurrency): API => {
   const baseURL = blockchainBaseURL(currency)
   if (!baseURL) {
-    throw new Error(`ledger API not available for currency ${currency.id}`)
+    throw new LedgerAPINotAvailable(`LedgerAPINotAvailable ${currency.id}`, {
+      currencyName: currency.name,
+    })
   }
   return {
     async getTransactions(address, blockHash) {

src/api/Fees.js

@@ -1,9 +1,12 @@
 // @flow
 import invariant from 'invariant'
 import type { Currency } from '@ledgerhq/live-common/lib/types'
+import createCustomErrorClass from 'helpers/createCustomErrorClass'
 import { blockchainBaseURL } from './Ledger'
 import network from './network'
 
+const FeeEstimationFailed = createCustomErrorClass('FeeEstimationFailed')
+
 export type Fees = {
   [_: string]: number,
 }
@@ -15,5 +18,5 @@ export const getEstimatedFees = async (currency: Currency): Promise<Fees> => {
   if (data) {
     return data
   }
-  throw new Error(`fee estimation failed. status=${status}`)
+  throw new FeeEstimationFailed(`FeeEstimationFailed ${status}`, { httpStatus: status })
 }

src/api/Ledger.js

@@ -1,9 +1,14 @@
 // @flow
 import type { Currency } from '@ledgerhq/live-common/lib/types'
 import logger from 'logger'
+import createCustomErrorClass from 'helpers/createCustomErrorClass'
 
 const BASE_URL = process.env.LEDGER_REST_API_BASE || 'https://api.ledgerwallet.com/'
 
+export const LedgerAPIErrorWithMessage = createCustomErrorClass('LedgerAPIErrorWithMessage')
+export const LedgerAPIError = createCustomErrorClass('LedgerAPIError')
+export const NetworkDown = createCustomErrorClass('NetworkDown')
+
 export const userFriendlyError = <A>(p: Promise<A>): Promise<A> =>
   p.catch(error => {
     if (error.response) {
@@ -24,16 +29,17 @@ export const userFriendlyError = <A>(p: Promise<A>): Promise<A> =>
               logger.warn("can't parse server result", e)
             }
           }
-          throw new Error(msg)
+          throw new LedgerAPIErrorWithMessage(msg)
         }
       }
-      logger.log('Ledger API: HTTP status', error.response.status, 'data: ', error.response.data)
-      throw new Error('A problem occurred with Ledger API. Please try again later.')
+      const { status } = error.response
+      logger.log('Ledger API: HTTP status', status, 'data: ', error.response.data)
+      throw new LedgerAPIError(`LedgerAPIError ${status}`, { status })
     } else if (error.request) {
       // The request was made but no response was received
       // `error.request` is an instance of XMLHttpRequest in the browser and an instance of
       // http.ClientRequest in node.js
-      throw new Error('Your network is down. Please try again later.')
+      throw new NetworkDown()
     }
     throw error
   })

src/bridge/BridgeSyncContext.js

@@ -3,6 +3,7 @@
 // it handles automatically re-calling synchronize
 // this is an even high abstraction than the bridge
 
+import invariant from 'invariant'
 import logger from 'logger'
 import shuffle from 'lodash/shuffle'
 import React, { Component } from 'react'
@@ -65,7 +66,7 @@ class Provider extends Component<BridgeSyncProviderOwnProps, Sync> {
         return
       }
       const account = this.props.accounts.find(a => a.id === accountId)
-      if (!account) throw new Error('account not found')
+      invariant(account, 'account not found')
 
       const bridge = getBridgeForCurrency(account.currency)
 

src/bridge/RippleJSBridge.js

@@ -1,4 +1,5 @@
 // @flow
+import invariant from 'invariant'
 import { Observable } from 'rxjs'
 import React from 'react'
 import bs58check from 'ripple-bs58check'
@@ -298,9 +299,10 @@ const RippleJSBridge: WalletBridge<Transaction> = {
 
             if (finished) return
             const balance = parseAPIValue(info.xrpBalance)
-            if (isNaN(balance) || !isFinite(balance)) {
-              throw new Error(`Ripple: invalid balance=${balance} for address ${address}`)
-            }
+            invariant(
+              !isNaN(balance) && isFinite(balance),
+              `Ripple: invalid balance=${balance} for address ${address}`,
+            )
 
             const transactions = await api.getTransactions(address, {
               minLedgerVersion,
@@ -375,9 +377,10 @@ const RippleJSBridge: WalletBridge<Transaction> = {
           }
 
           const balance = parseAPIValue(info.xrpBalance)
-          if (isNaN(balance) || !isFinite(balance)) {
-            throw new Error(`Ripple: invalid balance=${balance} for address ${freshAddress}`)
-          }
+          invariant(
+            !isNaN(balance) && isFinite(balance),
+            `Ripple: invalid balance=${balance} for address ${freshAddress}`,
+          )
 
           o.next(a => ({ ...a, balance }))
 

src/commands/index.js

@@ -1,5 +1,6 @@
 // @flow
 
+import invariant from 'invariant'
 import type { Command } from 'helpers/ipc'
 
 import getAddress from 'commands/getAddress'
@@ -53,9 +54,7 @@ const all: Array<Command<any, any>> = [
 ]
 
 all.forEach(cmd => {
-  if (all.some(c => c !== cmd && c.id === cmd.id)) {
-    throw new Error(`duplicate command '${cmd.id}'`)
-  }
+  invariant(!all.some(c => c !== cmd && c.id === cmd.id), `duplicate command '${cmd.id}'`)
 })
 
 export default all

src/components/DeviceConnect/index.js

@@ -12,6 +12,7 @@ import noop from 'lodash/noop'
 import Box from 'components/base/Box'
 import Spinner from 'components/base/Spinner'
 import CryptoCurrencyIcon from 'components/CryptoCurrencyIcon'
+import TranslatedError from 'components/TranslatedError'
 
 import IconCheck from 'icons/Check'
 import IconExclamationCircle from 'icons/ExclamationCircle'
@@ -146,7 +147,7 @@ type Props = {
   deviceSelected: ?Device,
   onChangeDevice: Device => void,
   t: T,
-  errorMessage: ?string,
+  error: ?Error,
 }
 
 const emitChangeDevice = props => {
@@ -186,7 +187,7 @@ class DeviceConnect extends PureComponent<Props> {
       genuineCheckStatus,
       withGenuineCheck,
       appOpened,
-      errorMessage,
+      error,
       currency,
       t,
       onChangeDevice,
@@ -306,7 +307,7 @@ class DeviceConnect extends PureComponent<Props> {
           <Info hasErrors>
             <IconInfoCircle size={12} />
             <Box shrink selectable>
-              {String(errorMessage || '')}
+              <TranslatedError error={error} />
             </Box>
           </Info>
         ) : null}

src/components/EnsureDeviceApp/index.js

@@ -13,9 +13,13 @@ import type { State as StoreState } from 'reducers/index'
 import getAddress from 'commands/getAddress'
 import { standardDerivation } from 'helpers/derivations'
 import isDashboardOpen from 'commands/isDashboardOpen'
+import createCustomErrorClass from 'helpers/createCustomErrorClass'
 
 import { CHECK_APP_INTERVAL_WHEN_VALID, CHECK_APP_INTERVAL_WHEN_INVALID } from 'config/constants'
 
+export const WrongAppOpened = createCustomErrorClass('WrongAppOpened')
+export const WrongDeviceForAccount = createCustomErrorClass('WrongDeviceForAccount')
+
 type OwnProps = {
   currency?: ?CryptoCurrency,
   deviceSelected: ?Device,
@@ -31,7 +35,7 @@ type OwnProps = {
     devices: Device[],
     deviceSelected: ?Device,
     deviceStatus: DeviceStatus,
-    errorMessage: ?string,
+    error: ?Error,
   }) => React$Element<*>,
 }
 
@@ -48,7 +52,7 @@ type GenuineCheckStatus = 'success' | 'fail' | 'progress'
 type State = {
   deviceStatus: DeviceStatus,
   appStatus: AppStatus,
-  errorMessage: ?string,
+  error: ?Error,
   genuineCheckStatus: GenuineCheckStatus,
 }
 
@@ -62,7 +66,7 @@ class EnsureDeviceApp extends PureComponent<Props, State> {
   state = {
     appStatus: 'progress',
     deviceStatus: this.props.deviceSelected ? 'connected' : 'unconnected',
-    errorMessage: null,
+    error: null,
     genuineCheckStatus: 'progress',
   }
 
@@ -139,7 +143,7 @@ class EnsureDeviceApp extends PureComponent<Props, State> {
                 e.message === 'Cannot write to HID device')
             ) {
               logger.log(e)
-              throw new Error(`You must open application ‘${cur.name}’ on the device`)
+              throw new WrongAppOpened(`WrongAppOpened ${cur.id}`, { currencyName: cur.name })
             }
             throw e
           })
@@ -148,10 +152,13 @@ class EnsureDeviceApp extends PureComponent<Props, State> {
           const { freshAddress } = account
           if (account && freshAddress !== address) {
             logger.warn({ freshAddress, address })
-            throw new Error(`You must use the device associated to the account ‘${account.name}’`)
+            throw new WrongDeviceForAccount(`WrongDeviceForAccount ${account.name}`, {
+              accountName: account.name,
+            })
           }
         }
       } else {
+        logger.warn('EnsureDeviceApp for using dashboard is DEPRECATED !!!')
         // FIXME REMOVE THIS ! should use EnsureDashboard dedicated component.
         const isDashboard = isDashboardOpen.send({ devicePath: deviceSelected.path }).toPromise()
 
@@ -166,7 +173,7 @@ class EnsureDeviceApp extends PureComponent<Props, State> {
         this.handleGenuineCheck()
       }
     } catch (e) {
-      this.handleStatusChange(this.state.deviceStatus, 'fail', e.message)
+      this.handleStatusChange(this.state.deviceStatus, 'fail', e)
       isSuccess = false
     }
 
@@ -182,12 +189,12 @@ class EnsureDeviceApp extends PureComponent<Props, State> {
   _timeout: *
   _unmounted = false
 
-  handleStatusChange = (deviceStatus, appStatus, errorMessage = null) => {
+  handleStatusChange = (deviceStatus, appStatus, error = null) => {
     const { onStatusChange } = this.props
     clearTimeout(this._timeout)
     if (!this._unmounted) {
-      this.setState({ deviceStatus, appStatus, errorMessage })
-      onStatusChange && onStatusChange(deviceStatus, appStatus, errorMessage)
+      this.setState({ deviceStatus, appStatus, error })
+      onStatusChange && onStatusChange(deviceStatus, appStatus, error)
     }
   }
 
@@ -202,7 +209,7 @@ class EnsureDeviceApp extends PureComponent<Props, State> {
 
   render() {
     const { currency, account, devices, deviceSelected, render } = this.props
-    const { appStatus, deviceStatus, genuineCheckStatus, errorMessage } = this.state
+    const { appStatus, deviceStatus, genuineCheckStatus, error } = this.state
 
     if (render) {
       // if cur is not provided, we assume we want to check if user is on
@@ -216,7 +223,7 @@ class EnsureDeviceApp extends PureComponent<Props, State> {
         deviceSelected: deviceStatus === 'connected' ? deviceSelected : null,
         deviceStatus,
         genuineCheckStatus,
-        errorMessage,
+        error,
       })
     }
 

src/components/GenuineCheckModal/index.js

@@ -45,7 +45,7 @@ class GenuineCheck extends PureComponent<Props, State> {
             onStatusChange={status => {
               logger.log(`status changed to ${status}`)
             }}
-            render={({ appStatus, genuineCheckStatus, deviceSelected, errorMessage }) => (
+            render={({ appStatus, genuineCheckStatus, deviceSelected, error }) => (
               <DeviceConnect
                 appOpened={
                   appStatus === 'success' ? 'success' : appStatus === 'fail' ? 'fail' : null
@@ -54,7 +54,7 @@ class GenuineCheck extends PureComponent<Props, State> {
                 genuineCheckStatus={genuineCheckStatus}
                 devices={reducedDevicesList}
                 deviceSelected={deviceSelected}
-                errorMessage={errorMessage}
+                error={error}
               />
             )}
           />

src/components/RequestAmount/index.js

@@ -21,6 +21,9 @@ import InputCurrency from 'components/base/InputCurrency'
 import Button from 'components/base/Button'
 import Box from 'components/base/Box'
 import type { State } from 'reducers'
+import createCustomErrorClass from 'helpers/createCustomErrorClass'
+
+const NotEnoughBalance = createCustomErrorClass('NotEnoughBalance')
 
 const InputRight = styled(Box).attrs({
   ff: 'Rubik',
@@ -145,7 +148,7 @@ export class RequestAmount extends PureComponent<Props> {
     return (
       <Box horizontal grow shrink>
         <InputCurrency
-          error={canBeSpent ? null : 'Not enough balance'}
+          error={canBeSpent ? null : new NotEnoughBalance()}
           containerProps={containerProps}
           defaultUnit={account.unit}
           value={value}

src/components/ThrowBlock.js

@@ -12,6 +12,7 @@ import db from 'helpers/db'
 import ExportLogsBtn from 'components/ExportLogsBtn'
 import Box from 'components/base/Box'
 import Button from 'components/base/Button'
+import TranslatedError from './TranslatedError'
 
 type Props = {
   children: any,
@@ -81,7 +82,9 @@ ${error.stack}
     if (error) {
       return (
         <Container>
-          <Inner>{`Error: ${error.message}`}</Inner>
+          <Inner>
+            <TranslatedError error={error} />
+          </Inner>
           <Box horizontal flow={2}>
             <Button primary onClick={this.handleRestart}>
               {'Restart app'}

src/components/TranslatedError.js

@@ -0,0 +1,25 @@
+// @flow
+// Convention:
+// - errors we throw on our app will use a different error.name per error type
+// - an error can have parameters, to use them, just use field of the Error object, that's what we give to `t()`
+// - returned value is intentially not styled (is universal). wrap this in whatever you need
+
+import { PureComponent } from 'react'
+import { translate } from 'react-i18next'
+import type { T } from 'types/common'
+
+type Props = {
+  error: ?Error,
+  t: T,
+}
+
+class TranslatedError extends PureComponent<Props> {
+  render() {
+    const { t, error } = this.props
+    if (!error) return null
+    if (typeof error === 'string') return error
+    return t(`errors:${error.name}`, error)
+  }
+}
+
+export default translate()(TranslatedError)

src/components/base/FormattedVal/index.js

@@ -1,5 +1,6 @@
 // @flow
 
+import invariant from 'invariant'
 import React from 'react'
 import styled from 'styled-components'
 import { connect } from 'react-redux'
@@ -76,9 +77,7 @@ function FormattedVal(props: Props) {
   } = props
   let { val } = props
 
-  if (isUndefined(val)) {
-    throw new Error('FormattedVal require a `val` prop. Received `undefined`')
-  }
+  invariant(!isUndefined(val), 'FormattedVal require a `val` prop. Received `undefined`')
 
   const isNegative = val < 0
 
@@ -88,9 +87,7 @@ function FormattedVal(props: Props) {
     // FIXME move out the % feature of this component... totally unrelated to currency & annoying for flow type.
     text = `${alwaysShowSign ? (isNegative ? '- ' : '+ ') : ''}${isNegative ? val * -1 : val} %`
   } else {
-    if (!unit) {
-      throw new Error('FormattedVal require a `unit` prop. Received `undefined`')
-    }
+    invariant(unit, 'FormattedVal require a `unit` prop. Received `undefined`')
 
     if (withIcon && isNegative) {
       val *= -1

src/components/base/Input/index.js

@@ -8,6 +8,7 @@ import noop from 'lodash/noop'
 import fontFamily from 'styles/styled/fontFamily'
 
 import Box from 'components/base/Box'
+import TranslatedError from 'components/TranslatedError'
 
 const Container = styled(Box).attrs({
   horizontal: true,
@@ -172,7 +173,11 @@ class Input extends PureComponent<Props, State> {
             onChange={this.handleChange}
             onKeyDown={this.handleKeyDown}
           />
-          {error && typeof error === 'string' ? <ErrorDisplay>{error}</ErrorDisplay> : null}
+          {error ? (
+            <ErrorDisplay>
+              <TranslatedError error={error} />
+            </ErrorDisplay>
+          ) : null}
         </Box>
         {renderRight}
       </Container>

src/components/modals/AddAccounts/index.js

@@ -1,5 +1,6 @@
 // @flow
 
+import invariant from 'invariant'
 import React, { PureComponent } from 'react'
 import { compose } from 'redux'
 import { connect } from 'react-redux'
@@ -173,9 +174,7 @@ class AddAccounts extends PureComponent<Props, State> {
     const stepIndex = this.STEPS.findIndex(s => s.id === stepId)
     const step = this.STEPS[stepIndex]
 
-    if (!step) {
-      throw new Error(`AddAccountsModal: step ${stepId} doesn't exists`)
-    }
+    invariant(step, `AddAccountsModal: step ${stepId} doesn't exists`)
 
     const { component: StepComponent, footer: StepFooter, hideFooter, onBack } = step
 

src/components/modals/AddAccounts/steps/02-step-connect-device.js

@@ -1,5 +1,6 @@
 // @flow
 
+import invariant from 'invariant'
 import React, { Fragment } from 'react'
 import { Trans } from 'react-i18next'
 
@@ -11,9 +12,8 @@ import { CurrencyCircleIcon } from 'components/base/CurrencyBadge'
 import type { StepProps } from '../index'
 
 function StepConnectDevice({ t, currency, currentDevice, setState }: StepProps) {
-  if (!currency) {
-    throw new Error('No currency given')
-  }
+  invariant(currency, 'No currency given')
+
   return (
     <Fragment>
       <Box align="center" mb={6}>

src/components/modals/AddAccounts/steps/03-step-import.js

@@ -1,5 +1,6 @@
 // @flow
 
+import invariant from 'invariant'
 import React, { PureComponent, Fragment } from 'react'
 import type { Account } from '@ledgerhq/live-common/lib/types'
 import uniq from 'lodash/uniq'
@@ -30,13 +31,8 @@ class StepImport extends PureComponent<StepProps> {
   startScanAccountsDevice() {
     const { currency, currentDevice, setState } = this.props
     try {
-      if (!currency) {
-        throw new Error('No currency to scan')
-      }
-
-      if (!currentDevice) {
-        throw new Error('No device')
-      }
+      invariant(currency, 'No currency to scan')
+      invariant(currentDevice, 'No device')
 
       const bridge = getBridgeForCurrency(currency)
 

src/components/modals/Receive/index.js

@@ -18,6 +18,7 @@ import Breadcrumb from 'components/Breadcrumb'
 import Button from 'components/base/Button'
 import Modal, { ModalBody, ModalTitle, ModalContent, ModalFooter } from 'components/base/Modal'
 import StepConnectDevice from 'components/modals/StepConnectDevice'
+import { WrongDeviceForAccount } from 'components/EnsureDeviceApp'
 
 import StepAccount from './01-step-account'
 import StepConfirmAddress from './03-step-confirm-address'
@@ -208,7 +209,9 @@ class ReceiveModal extends PureComponent<Props, State> {
           .toPromise()
 
         if (address !== account.freshAddress) {
-          throw new Error('Confirmed address is different')
+          throw new WrongDeviceForAccount(`WrongDeviceForAccount ${account.name}`, {
+            accountName: account.name,
+          })
         }
 
         this.setState({ addressVerified: true, stepIndex: 3 })

src/components/modals/Send/04-step-confirmation.js

@@ -2,6 +2,7 @@
 import React from 'react'
 import styled from 'styled-components'
 import type { Operation } from '@ledgerhq/live-common/lib/types'
+import type { T } from 'types/common'
 
 import Spinner from 'components/base/Spinner'
 import IconCheckCircle from 'icons/CheckCircle'
@@ -9,9 +10,7 @@ import IconExclamationCircleThin from 'icons/ExclamationCircleThin'
 import Box from 'components/base/Box'
 import { multiline } from 'styles/helpers'
 import { colors } from 'styles/theme'
-import { formatError } from 'helpers/errors'
-
-import type { T } from 'types/common'
+import TranslatedError from '../../TranslatedError'
 
 const Container = styled(Box).attrs({
   alignItems: 'center',
@@ -65,7 +64,11 @@ function StepConfirmation(props: Props) {
       </span>
       <Title>{t(`${tPrefix}.title`)}</Title>
       <Text style={{ userSelect: 'text' }}>
-        {optimisticOperation ? multiline(t(`${tPrefix}.text`)) : error ? formatError(error) : null}
+        {optimisticOperation ? (
+          multiline(t(`${tPrefix}.text`))
+        ) : error ? (
+          <TranslatedError error={error} />
+        ) : null}
       </Text>
       <Text style={{ userSelect: 'text' }}>
         {optimisticOperation ? optimisticOperation.hash : ''}

src/components/modals/StepConnectDevice.js

@@ -28,14 +28,14 @@ const StepConnectDevice = ({
     currency={currency}
     deviceSelected={deviceSelected}
     onStatusChange={onStatusChange}
-    render={({ currency, appStatus, devices, deviceSelected, errorMessage }) => (
+    render={({ currency, appStatus, devices, deviceSelected, error }) => (
       <DeviceConnect
         currency={currency}
         appOpened={appStatus === 'success' ? 'success' : appStatus === 'fail' ? 'fail' : null}
         devices={devices}
         deviceSelected={deviceSelected}
         onChangeDevice={onChangeDevice}
-        errorMessage={errorMessage}
+        error={error}
       />
     )}
   />

src/helpers/createCustomErrorClass.js

@@ -0,0 +1,13 @@
+// @flow
+
+export default (name: string) => {
+  const C = function CustomError(message?: string, fields?: Object) {
+    this.name = name
+    this.message = message || name
+    this.stack = new Error().stack
+    Object.assign(this, fields)
+  }
+  // $FlowFixMe
+  C.prototype = new Error()
+  return C
+}

src/helpers/getAddressForCurrency/btc.js

@@ -4,6 +4,9 @@ import type { CryptoCurrency } from '@ledgerhq/live-common/lib/types'
 import Btc from '@ledgerhq/hw-app-btc'
 import type Transport from '@ledgerhq/hw-transport'
 import getBitcoinLikeInfo from '../devices/getBitcoinLikeInfo'
+import createCustomErrorClass from '../createCustomErrorClass'
+
+const BtcUnmatchedApp = createCustomErrorClass('BtcUnmatchedApp')
 
 export default async (
   transport: Transport<*>,
@@ -24,7 +27,9 @@ export default async (
   if (bitcoinLikeInfo) {
     const { P2SH, P2PKH } = await getBitcoinLikeInfo(transport)
     if (P2SH !== bitcoinLikeInfo.P2SH || P2PKH !== bitcoinLikeInfo.P2PKH) {
-      throw new Error(`You must open application ‘${currency.name}’ on the device`)
+      throw new BtcUnmatchedApp(`BtcUnmatchedApp ${currency.id}`, {
+        currencyName: currency.name,
+      })
     }
   }
 

src/helpers/libcore.js

@@ -10,9 +10,12 @@ import type { NJSAccount, NJSOperation } from '@ledgerhq/ledger-core/src/ledgerc
 
 import { isSegwitAccount } from 'helpers/bip32'
 import * as accountIdHelper from 'helpers/accountId'
+import createCustomErrorClass from './createCustomErrorClass'
 
 import { getAccountPlaceholderName, getNewAccountPlaceholderName } from './accountName'
 
+const NoAddressesFound = createCustomErrorClass('NoAddressesFound')
+
 type Props = {
   core: *,
   devicePath: string,
@@ -248,7 +251,7 @@ async function buildAccountRaw({
   }))
 
   if (addresses.length === 0) {
-    throw new Error('no addresses found')
+    throw new NoAddressesFound()
   }
 
   const { str: freshAddress, path: freshAddressPath } = addresses[0]

src/helpers/signTransactionForCurrency/ethereum.js

@@ -1,4 +1,5 @@
 // @flow
+import invariant from 'invariant'
 import Eth from '@ledgerhq/hw-app-eth'
 import type Transport from '@ledgerhq/hw-transport'
 import EthereumTx from 'ethereumjs-tx'
@@ -34,7 +35,7 @@ export default async (
   // First, we need to create a partial tx and send to the device
 
   const chainId = getNetworkId(currencyId)
-  if (!chainId) throw new Error(`chainId not found for currency=${currencyId}`)
+  invariant(chainId, `chainId not found for currency=${currencyId}`)
   const tx = new EthereumTx({
     nonce: t.nonce,
     gasPrice: `0x${t.gasPrice.toString(16)}`,
@@ -57,11 +58,10 @@ export default async (
   tx.s = Buffer.from(result.s, 'hex')
   const signedChainId = Math.floor((tx.v[0] - 35) / 2) // EIP155: v should be chain_id * 2 + {35, 36}
   const validChainId = chainId & 0xff // eslint-disable-line no-bitwise
-  if (signedChainId !== validChainId) {
-    throw new Error(
+  invariant(
+    signedChainId === validChainId,
     `Invalid chainId signature returned. Expected: ${chainId}, Got: ${signedChainId}`,
   )
-  }
 
   // Finally, we can send the transaction string to broadcast
   return `0x${tx.serialize().toString('hex')}`

static/i18n/en/errors.yml

@@ -0,0 +1,13 @@
+RangeError: {{message}}
+Error: {{message}}
+LedgerAPIErrorWithMessage: {{message}}
+TransportStatusError: {{message}}
+FeeEstimationFailed: 'fee estimation failed (status: {{status}})'
+NotEnoughBalance: 'Not enough balance'
+BtcUnmatchedApp: 'You must open application ‘{{currencyName}}’ on the device'
+WrongAppOpened: 'You must open application ‘{{currencyName}}’ on the device'
+WrongDeviceForAccount: 'You must use the device associated to the account ‘{{accountName}}’'
+LedgerAPINotAvailable: 'Ledger API is not available for currency {{currencyName}}'
+LedgerAPIError: 'A problem occurred with Ledger API. Please try again later. (HTTP {{status}})'
+NetworkDown: 'Your internet connection seems down. Please try again later.'
+NoAddressesFound: 'No accounts found'