support sending funds to external wallet

lib/wallet.js

@@ -8,7 +8,6 @@ const fs = pify(require('fs'))
 
 const options = require('./options')
 const ph = require('./plugin-helper')
-const logger = require('./logger')
 
 const FETCH_INTERVAL = 5000
 const INSUFFICIENT_FUNDS_CODE = 570
@@ -153,6 +152,16 @@ function cryptoNetwork (settings, cryptoCode) {
   return wallet.cryptoNetwork(account, cryptoCode)
 }
 
+function isStrictAddress (settings, cryptoCode, toAddress) {
+  // Note: For now, only for wallets that specifically check for this.
+
+  return fetchWallet(settings, cryptoCode)
+    .then(r => {
+      if (!r.wallet.isStrictAddress) return true
+      return r.wallet.isStrictAddress(cryptoCode, toAddress)
+    })
+}
+
 const balance = mem(_balance, {
   maxAge: FETCH_INTERVAL,
   cacheKey: (settings, cryptoCode) => cryptoCode
@@ -163,6 +172,7 @@ module.exports = {
   sendCoins,
   newAddress,
   getStatus,
+  isStrictAddress,
   sweep,
   isHd,
   newFunding,