diff --git a/js/_1broker.js b/js/_1broker.js
index ac527bdeaed35..fa556196dd15c 100644
--- a/js/_1broker.js
+++ b/js/_1broker.js
@@ -12,7 +12,7 @@ module.exports = class _1broker extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': '_1broker',
             'name': '1Broker',
-            'countries': ['US'],
+            'countries': [ 'US' ],
             'rateLimit': 1500,
             'version': 'v2',
             'has': {
diff --git a/js/_1btcxe.js b/js/_1btcxe.js
index 3645a2e4e5583..68ad80cf3307e 100644
--- a/js/_1btcxe.js
+++ b/js/_1btcxe.js
@@ -12,7 +12,7 @@ module.exports = class _1btcxe extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': '_1btcxe',
             'name': '1BTCXE',
-            'countries': ['PA'], // Panama
+            'countries': [ 'PA' ], // Panama
             'comment': 'Crypto Capital API',
             'has': {
                 'CORS': true,
diff --git a/js/acx.js b/js/acx.js
index 9b4a696d00261..955868f9585d7 100644
--- a/js/acx.js
+++ b/js/acx.js
@@ -12,7 +12,7 @@ module.exports = class acx extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'acx',
             'name': 'ACX',
-            'countries': ['AU'],
+            'countries': [ 'AU' ],
             'rateLimit': 1000,
             'version': 'v2',
             'has': {
diff --git a/js/allcoin.js b/js/allcoin.js
index 43c363c36be9f..622d978d2e44f 100644
--- a/js/allcoin.js
+++ b/js/allcoin.js
@@ -11,7 +11,7 @@ module.exports = class allcoin extends okcoinusd {
         return this.deepExtend (super.describe (), {
             'id': 'allcoin',
             'name': 'Allcoin',
-            'countries': ['CA'],
+            'countries': [ 'CA' ],
             'has': {
                 'CORS': false,
             },
diff --git a/js/anybits.js b/js/anybits.js
index facae83e502e0..5d397ed24993c 100644
--- a/js/anybits.js
+++ b/js/anybits.js
@@ -9,7 +9,7 @@ module.exports = class anybits extends bitsane {
         return this.deepExtend (super.describe (), {
             'id': 'anybits',
             'name': 'Anybits',
-            'countries': ['IE'], // Ireland
+            'countries': [ 'IE' ], // Ireland
             'has': {
                 'fetchCurrencies': true,
                 'fetchTickers': true,
diff --git a/js/binance.js b/js/binance.js
index dc8d5915a4296..9e1d8bb3e8c94 100644
--- a/js/binance.js
+++ b/js/binance.js
@@ -12,7 +12,7 @@ module.exports = class binance extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'binance',
             'name': 'Binance',
-            'countries': ['JP'], // Japan
+            'countries': [ 'JP' ], // Japan
             'rateLimit': 500,
             // new metainfo interface
             'has': {
diff --git a/js/bit2c.js b/js/bit2c.js
index be5b8f5522d84..a390a4b744831 100644
--- a/js/bit2c.js
+++ b/js/bit2c.js
@@ -12,7 +12,7 @@ module.exports = class bit2c extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bit2c',
             'name': 'Bit2C',
-            'countries': ['IL'], // Israel
+            'countries': [ 'IL' ], // Israel
             'rateLimit': 3000,
             'has': {
                 'CORS': false,
diff --git a/js/bitbank.js b/js/bitbank.js
index 65a806d695451..06d4833dd367d 100644
--- a/js/bitbank.js
+++ b/js/bitbank.js
@@ -12,7 +12,7 @@ module.exports = class bitbank extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bitbank',
             'name': 'bitbank',
-            'countries': ['JP'],
+            'countries': [ 'JP' ],
             'version': 'v1',
             'has': {
                 'fetchOHLCV': true,
diff --git a/js/bitfinex.js b/js/bitfinex.js
index e62a7076d7aa5..edc0e5e7dc576 100644
--- a/js/bitfinex.js
+++ b/js/bitfinex.js
@@ -13,7 +13,7 @@ module.exports = class bitfinex extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bitfinex',
             'name': 'Bitfinex',
-            'countries': ['VG'],
+            'countries': [ 'VG' ],
             'version': 'v1',
             'rateLimit': 1500,
             // new metainfo interface
diff --git a/js/bitfinex2.js b/js/bitfinex2.js
index 71ad87f506074..8442748ba7a69 100644
--- a/js/bitfinex2.js
+++ b/js/bitfinex2.js
@@ -12,7 +12,7 @@ module.exports = class bitfinex2 extends bitfinex {
         return this.deepExtend (super.describe (), {
             'id': 'bitfinex2',
             'name': 'Bitfinex v2',
-            'countries': ['VG'],
+            'countries': [ 'VG' ],
             'version': 'v2',
             // new metainfo interface
             'has': {
diff --git a/js/bitflyer.js b/js/bitflyer.js
index 0ac67692049da..cd3365bce2ef2 100644
--- a/js/bitflyer.js
+++ b/js/bitflyer.js
@@ -12,7 +12,7 @@ module.exports = class bitflyer extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bitflyer',
             'name': 'bitFlyer',
-            'countries': ['JP'],
+            'countries': [ 'JP' ],
             'version': 'v1',
             'rateLimit': 1000, // their nonce-timestamp is in seconds...
             'has': {
diff --git a/js/bithumb.js b/js/bithumb.js
index e25b4ba718fbb..c157e7916bfcf 100644
--- a/js/bithumb.js
+++ b/js/bithumb.js
@@ -12,7 +12,7 @@ module.exports = class bithumb extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bithumb',
             'name': 'Bithumb',
-            'countries': ['KR'], // South Korea
+            'countries': [ 'KR' ], // South Korea
             'rateLimit': 500,
             'has': {
                 'CORS': true,
diff --git a/js/bitmex.js b/js/bitmex.js
index 501033a76f18f..63fd0b3ab66c1 100644
--- a/js/bitmex.js
+++ b/js/bitmex.js
@@ -12,7 +12,7 @@ module.exports = class bitmex extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bitmex',
             'name': 'BitMEX',
-            'countries': ['SC'], // Seychelles
+            'countries': [ 'SC' ], // Seychelles
             'version': 'v1',
             'userAgent': undefined,
             'rateLimit': 2000,
diff --git a/js/bitsane.js b/js/bitsane.js
index 981ac956bee23..5ee6175e478f4 100644
--- a/js/bitsane.js
+++ b/js/bitsane.js
@@ -12,7 +12,7 @@ module.exports = class bitsane extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bitsane',
             'name': 'Bitsane',
-            'countries': ['IE'], // Ireland
+            'countries': [ 'IE' ], // Ireland
             'has': {
                 'fetchCurrencies': true,
                 'fetchTickers': true,
diff --git a/js/bitso.js b/js/bitso.js
index 3390680c5a108..66d3778209a0b 100644
--- a/js/bitso.js
+++ b/js/bitso.js
@@ -12,7 +12,7 @@ module.exports = class bitso extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bitso',
             'name': 'Bitso',
-            'countries': ['MX'], // Mexico
+            'countries': [ 'MX' ], // Mexico
             'rateLimit': 2000, // 30 requests per minute
             'version': 'v3',
             'has': {
diff --git a/js/bitstamp.js b/js/bitstamp.js
index 6f4eda31e8c55..c1797af34d8db 100644
--- a/js/bitstamp.js
+++ b/js/bitstamp.js
@@ -12,7 +12,7 @@ module.exports = class bitstamp extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bitstamp',
             'name': 'Bitstamp',
-            'countries': ['GB'],
+            'countries': [ 'GB' ],
             'rateLimit': 1000,
             'version': 'v2',
             'has': {
diff --git a/js/bitstamp1.js b/js/bitstamp1.js
index 16fc8cfa6d0a3..a2f04571680ef 100644
--- a/js/bitstamp1.js
+++ b/js/bitstamp1.js
@@ -12,7 +12,7 @@ module.exports = class bitstamp1 extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bitstamp1',
             'name': 'Bitstamp v1',
-            'countries': ['GB'],
+            'countries': [ 'GB' ],
             'rateLimit': 1000,
             'version': 'v1',
             'has': {
diff --git a/js/bittrex.js b/js/bittrex.js
index 9970b01489e37..db8bee4468345 100644
--- a/js/bittrex.js
+++ b/js/bittrex.js
@@ -12,7 +12,7 @@ module.exports = class bittrex extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bittrex',
             'name': 'Bittrex',
-            'countries': ['US'],
+            'countries': [ 'US' ],
             'version': 'v1.1',
             'rateLimit': 1500,
             // new metainfo interface
diff --git a/js/bitz.js b/js/bitz.js
index 725d117eef776..ba680893c5eaf 100644
--- a/js/bitz.js
+++ b/js/bitz.js
@@ -12,7 +12,7 @@ module.exports = class bitz extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bitz',
             'name': 'Bit-Z',
-            'countries': ['HK'],
+            'countries': [ 'HK' ],
             'rateLimit': 2000,
             'version': 'v1',
             'userAgent': this.userAgents['chrome'],
diff --git a/js/bleutrade.js b/js/bleutrade.js
index 4b5e4e28097d2..b6ec2edfd1254 100644
--- a/js/bleutrade.js
+++ b/js/bleutrade.js
@@ -12,7 +12,7 @@ module.exports = class bleutrade extends bittrex {
         return this.deepExtend (super.describe (), {
             'id': 'bleutrade',
             'name': 'Bleutrade',
-            'countries': ['BR'], // Brazil
+            'countries': [ 'BR' ], // Brazil
             'rateLimit': 1000,
             'version': 'v2',
             'has': {
diff --git a/js/braziliex.js b/js/braziliex.js
index f5ae48d904a19..10a99eb678cc4 100644
--- a/js/braziliex.js
+++ b/js/braziliex.js
@@ -12,7 +12,7 @@ module.exports = class braziliex extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'braziliex',
             'name': 'Braziliex',
-            'countries': ['BR'],
+            'countries': [ 'BR' ],
             'rateLimit': 1000,
             'has': {
                 'fetchCurrencies': true,
diff --git a/js/btcbox.js b/js/btcbox.js
index caf6c97887033..36aa24af748ab 100644
--- a/js/btcbox.js
+++ b/js/btcbox.js
@@ -12,7 +12,7 @@ module.exports = class btcbox extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'btcbox',
             'name': 'BtcBox',
-            'countries': ['JP'],
+            'countries': [ 'JP' ],
             'rateLimit': 1000,
             'version': 'v1',
             'has': {
diff --git a/js/btcchina.js b/js/btcchina.js
index 07f774cb0fd1f..4bc53e34c05a8 100644
--- a/js/btcchina.js
+++ b/js/btcchina.js
@@ -11,7 +11,7 @@ module.exports = class btcchina extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'btcchina',
             'name': 'BTCChina',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'rateLimit': 1500,
             'version': 'v1',
             'has': {
diff --git a/js/btcexchange.js b/js/btcexchange.js
index e0df54cd0461e..f883214e3e213 100644
--- a/js/btcexchange.js
+++ b/js/btcexchange.js
@@ -11,7 +11,7 @@ module.exports = class btcexchange extends btcturk {
         return this.deepExtend (super.describe (), {
             'id': 'btcexchange',
             'name': 'BTCExchange',
-            'countries': ['PH'], // Philippines
+            'countries': [ 'PH' ], // Philippines
             'rateLimit': 1500,
             'has': {
                 'CORS': false,
diff --git a/js/btcmarkets.js b/js/btcmarkets.js
index 6cac7c205c70c..b87f7c81505d9 100644
--- a/js/btcmarkets.js
+++ b/js/btcmarkets.js
@@ -12,7 +12,7 @@ module.exports = class btcmarkets extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'btcmarkets',
             'name': 'BTC Markets',
-            'countries': ['AU'], // Australia
+            'countries': [ 'AU' ], // Australia
             'rateLimit': 1000, // market data cached for 1 second (trades cached for 2 seconds)
             'has': {
                 'CORS': false,
diff --git a/js/btctradeim.js b/js/btctradeim.js
index b6419a4118ff7..bfe1a1d06d486 100644
--- a/js/btctradeim.js
+++ b/js/btctradeim.js
@@ -12,7 +12,7 @@ module.exports = class btctradeim extends coinegg {
         return this.deepExtend (super.describe (), {
             'id': 'btctradeim',
             'name': 'BtcTrade.im',
-            'countries': ['HK'],
+            'countries': [ 'HK' ],
             'urls': {
                 'logo': 'https://user-images.githubusercontent.com/1294454/36770531-c2142444-1c5b-11e8-91e2-a4d90dc85fe8.jpg',
                 'api': {
diff --git a/js/btctradeua.js b/js/btctradeua.js
index dbdc092f14517..5038847a0bb32 100644
--- a/js/btctradeua.js
+++ b/js/btctradeua.js
@@ -12,7 +12,7 @@ module.exports = class btctradeua extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'btctradeua',
             'name': 'BTC Trade UA',
-            'countries': ['UA'], // Ukraine,
+            'countries': [ 'UA' ], // Ukraine,
             'rateLimit': 3000,
             'has': {
                 'CORS': true,
diff --git a/js/btcturk.js b/js/btcturk.js
index 4a6da6cadfd69..45eb77fd8f067 100644
--- a/js/btcturk.js
+++ b/js/btcturk.js
@@ -12,7 +12,7 @@ module.exports = class btcturk extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'btcturk',
             'name': 'BTCTurk',
-            'countries': ['TR'], // Turkey
+            'countries': [ 'TR' ], // Turkey
             'rateLimit': 1000,
             'has': {
                 'CORS': true,
diff --git a/js/bxinth.js b/js/bxinth.js
index efbca36834a03..4626125d2594c 100644
--- a/js/bxinth.js
+++ b/js/bxinth.js
@@ -12,7 +12,7 @@ module.exports = class bxinth extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'bxinth',
             'name': 'BX.in.th',
-            'countries': ['TH'], // Thailand
+            'countries': [ 'TH' ], // Thailand
             'rateLimit': 1500,
             'has': {
                 'CORS': false,
diff --git a/js/chbtc.js b/js/chbtc.js
index b33e6a1cd0ace..190ad435a17ee 100644
--- a/js/chbtc.js
+++ b/js/chbtc.js
@@ -12,7 +12,7 @@ module.exports = class chbtc extends zb {
         return this.deepExtend (super.describe (), {
             'id': 'chbtc',
             'name': 'CHBTC',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'rateLimit': 1000,
             'version': 'v1',
             'has': {
diff --git a/js/chilebit.js b/js/chilebit.js
index 94e220a3371e1..4aeeb9ec3326f 100644
--- a/js/chilebit.js
+++ b/js/chilebit.js
@@ -11,7 +11,7 @@ module.exports = class chilebit extends foxbit {
         return this.deepExtend (super.describe (), {
             'id': 'chilebit',
             'name': 'ChileBit',
-            'countries': ['CL'],
+            'countries': [ 'CL' ],
             'has': {
                 'CORS': false,
             },
diff --git a/js/cobinhood.js b/js/cobinhood.js
index 631e850ae543c..a4a55cb8d3d86 100644
--- a/js/cobinhood.js
+++ b/js/cobinhood.js
@@ -12,7 +12,7 @@ module.exports = class cobinhood extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'cobinhood',
             'name': 'COBINHOOD',
-            'countries': ['TW'],
+            'countries': [ 'TW' ],
             'rateLimit': 1000 / 10,
             'has': {
                 'fetchCurrencies': true,
diff --git a/js/coinbase.js b/js/coinbase.js
index 36d81d0f1ac3e..0ebe7f78175c2 100644
--- a/js/coinbase.js
+++ b/js/coinbase.js
@@ -12,7 +12,7 @@ module.exports = class coinbase extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'coinbase',
             'name': 'coinbase',
-            'countries': ['US'],
+            'countries': [ 'US' ],
             'rateLimit': 400, // 10k calls per hour
             'version': 'v2',
             'userAgent': this.userAgents['chrome'],
diff --git a/js/coinex.js b/js/coinex.js
index 5f047dcd4d4e1..fa14900b630bf 100644
--- a/js/coinex.js
+++ b/js/coinex.js
@@ -13,7 +13,7 @@ module.exports = class coinex extends Exchange {
             'id': 'coinex',
             'name': 'CoinEx',
             'version': 'v1',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'rateLimit': 1000,
             'has': {
                 'fetchTickers': true,
diff --git a/js/coinfalcon.js b/js/coinfalcon.js
index d8b77d9dcef81..c4196f96c1ef0 100644
--- a/js/coinfalcon.js
+++ b/js/coinfalcon.js
@@ -12,7 +12,7 @@ module.exports = class coinfalcon extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'coinfalcon',
             'name': 'CoinFalcon',
-            'countries': ['GB'],
+            'countries': [ 'GB' ],
             'rateLimit': 1000,
             'has': {
                 'fetchTickers': true,
diff --git a/js/coinfloor.js b/js/coinfloor.js
index b692831eab32e..fda4906366e21 100644
--- a/js/coinfloor.js
+++ b/js/coinfloor.js
@@ -13,7 +13,7 @@ module.exports = class coinfloor extends Exchange {
             'id': 'coinfloor',
             'name': 'coinfloor',
             'rateLimit': 1000,
-            'countries': ['UK'],
+            'countries': [ 'UK' ],
             'has': {
                 'CORS': false,
                 'fetchOpenOrders': true,
diff --git a/js/coinmarketcap.js b/js/coinmarketcap.js
index 693751bd82351..1ed4b6f5c4df8 100644
--- a/js/coinmarketcap.js
+++ b/js/coinmarketcap.js
@@ -14,7 +14,7 @@ module.exports = class coinmarketcap extends Exchange {
             'name': 'CoinMarketCap',
             'rateLimit': 10000,
             'version': 'v1',
-            'countries': ['US'],
+            'countries': [ 'US' ],
             'has': {
                 'CORS': true,
                 'privateAPI': false,
diff --git a/js/coinnest.js b/js/coinnest.js
index ffa57b873e1b0..8b91093b62f5b 100644
--- a/js/coinnest.js
+++ b/js/coinnest.js
@@ -12,7 +12,7 @@ module.exports = class coinnest extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'coinnest',
             'name': 'coinnest',
-            'countries': ['KR'],
+            'countries': [ 'KR' ],
             'rateLimit': 1000,
             'has': {
                 'fetchOpenOrders': true,
diff --git a/js/coinone.js b/js/coinone.js
index ac7d768e2786d..57223bc7ee60c 100644
--- a/js/coinone.js
+++ b/js/coinone.js
@@ -12,7 +12,7 @@ module.exports = class coinone extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'coinone',
             'name': 'CoinOne',
-            'countries': ['KR'], // Korea
+            'countries': [ 'KR' ], // Korea
             'rateLimit': 667,
             'version': 'v2',
             'has': {
diff --git a/js/coinsecure.js b/js/coinsecure.js
index 95eb3e155a782..668f948aef27d 100644
--- a/js/coinsecure.js
+++ b/js/coinsecure.js
@@ -12,7 +12,7 @@ module.exports = class coinsecure extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'coinsecure',
             'name': 'Coinsecure',
-            'countries': ['IN'], // India
+            'countries': [ 'IN' ], // India
             'rateLimit': 1000,
             'version': 'v1',
             'has': {
diff --git a/js/coinspot.js b/js/coinspot.js
index 638dbe100cc20..2909b0d82c97e 100644
--- a/js/coinspot.js
+++ b/js/coinspot.js
@@ -12,7 +12,7 @@ module.exports = class coinspot extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'coinspot',
             'name': 'CoinSpot',
-            'countries': ['AU'], // Australia
+            'countries': [ 'AU' ], // Australia
             'rateLimit': 1000,
             'has': {
                 'CORS': false,
diff --git a/js/cointiger.js b/js/cointiger.js
index 0ce708fbd0f0a..a67879faf3c87 100644
--- a/js/cointiger.js
+++ b/js/cointiger.js
@@ -13,7 +13,7 @@ module.exports = class cointiger extends huobipro {
         return this.deepExtend (super.describe (), {
             'id': 'cointiger',
             'name': 'CoinTiger',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'hostname': 'api.cointiger.pro',
             'has': {
                 'fetchCurrencies': false,
diff --git a/js/coolcoin.js b/js/coolcoin.js
index 5cb070a8bc3d5..a32401b1d9eca 100644
--- a/js/coolcoin.js
+++ b/js/coolcoin.js
@@ -11,7 +11,7 @@ module.exports = class coolcoin extends coinegg {
         return this.deepExtend (super.describe (), {
             'id': 'coolcoin',
             'name': 'CoolCoin',
-            'countries': ['HK'],
+            'countries': [ 'HK' ],
             'urls': {
                 'logo': 'https://user-images.githubusercontent.com/1294454/36770529-be7b1a04-1c5b-11e8-9600-d11f1996b539.jpg',
                 'api': {
diff --git a/js/crypton.js b/js/crypton.js
index ddf9c296da0db..3a461a2d2bf4f 100644
--- a/js/crypton.js
+++ b/js/crypton.js
@@ -12,7 +12,7 @@ module.exports = class crypton extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'crypton',
             'name': 'Crypton',
-            'countries': ['EU'],
+            'countries': [ 'EU' ],
             'rateLimit': 500,
             'version': '1',
             'has': {
diff --git a/js/cryptopia.js b/js/cryptopia.js
index 9ba55c4cccc0e..cefe33ba5686f 100644
--- a/js/cryptopia.js
+++ b/js/cryptopia.js
@@ -13,7 +13,7 @@ module.exports = class cryptopia extends Exchange {
             'id': 'cryptopia',
             'name': 'Cryptopia',
             'rateLimit': 1500,
-            'countries': ['NZ'], // New Zealand
+            'countries': [ 'NZ' ], // New Zealand
             'has': {
                 'CORS': false,
                 'createMarketOrder': false,
diff --git a/js/deribit.js b/js/deribit.js
index 0aaed51027d4a..e12c4b3cd1245 100644
--- a/js/deribit.js
+++ b/js/deribit.js
@@ -12,7 +12,7 @@ module.exports = class deribit extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'deribit',
             'name': 'Deribit',
-            'countries': ['NL'], // Netherlands
+            'countries': [ 'NL' ], // Netherlands
             'version': 'v1',
             'userAgent': undefined,
             'rateLimit': 2000,
diff --git a/js/dsx.js b/js/dsx.js
index 21e6a45024f42..3f40f76f7c7ad 100644
--- a/js/dsx.js
+++ b/js/dsx.js
@@ -11,7 +11,7 @@ module.exports = class dsx extends liqui {
         return this.deepExtend (super.describe (), {
             'id': 'dsx',
             'name': 'DSX',
-            'countries': ['UK'],
+            'countries': [ 'UK' ],
             'rateLimit': 1500,
             'has': {
                 'CORS': false,
diff --git a/js/ethfinex.js b/js/ethfinex.js
index eeb99f07f7fe4..90ea093643ddf 100644
--- a/js/ethfinex.js
+++ b/js/ethfinex.js
@@ -11,7 +11,7 @@ module.exports = class ethfinex extends bitfinex {
         return this.deepExtend (super.describe (), {
             'id': 'ethfinex',
             'name': 'Ethfinex',
-            'countries': ['VG'],
+            'countries': [ 'VG' ],
             'version': 'v1',
             'rateLimit': 1500,
             // new metainfo interface
diff --git a/js/exx.js b/js/exx.js
index 65d7228123f2d..bf87093b07ef0 100644
--- a/js/exx.js
+++ b/js/exx.js
@@ -12,7 +12,7 @@ module.exports = class exx extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'exx',
             'name': 'EXX',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'rateLimit': 1000 / 10,
             'has': {
                 'fetchOrder': true,
diff --git a/js/flowbtc.js b/js/flowbtc.js
index 3bb22c6573ff1..ba05ecd153864 100644
--- a/js/flowbtc.js
+++ b/js/flowbtc.js
@@ -13,7 +13,7 @@ module.exports = class flowbtc extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'flowbtc',
             'name': 'flowBTC',
-            'countries': ['BR'], // Brazil
+            'countries': [ 'BR' ], // Brazil
             'version': 'v1',
             'rateLimit': 1000,
             'has': {
diff --git a/js/foxbit.js b/js/foxbit.js
index cf6d11e0c387d..3bae8d527beda 100644
--- a/js/foxbit.js
+++ b/js/foxbit.js
@@ -12,7 +12,7 @@ module.exports = class foxbit extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'foxbit',
             'name': 'FoxBit',
-            'countries': ['BR'],
+            'countries': [ 'BR' ],
             'has': {
                 'CORS': false,
                 'createMarketOrder': false,
diff --git a/js/fybse.js b/js/fybse.js
index 34fdcf62ffec7..76cbb9a4b178c 100644
--- a/js/fybse.js
+++ b/js/fybse.js
@@ -12,7 +12,7 @@ module.exports = class fybse extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'fybse',
             'name': 'FYB-SE',
-            'countries': ['SE'], // Sweden
+            'countries': [ 'SE' ], // Sweden
             'has': {
                 'CORS': false,
             },
diff --git a/js/fybsg.js b/js/fybsg.js
index f416dc4803b1c..2c8c903bc36f4 100644
--- a/js/fybsg.js
+++ b/js/fybsg.js
@@ -11,7 +11,7 @@ module.exports = class fybsg extends fybse {
         return this.deepExtend (super.describe (), {
             'id': 'fybsg',
             'name': 'FYB-SG',
-            'countries': ['SG'], // Singapore
+            'countries': [ 'SG' ], // Singapore
             'has': {
                 'CORS': false,
             },
diff --git a/js/gatecoin.js b/js/gatecoin.js
index 1d38e99ec3487..a8870b6b81b42 100644
--- a/js/gatecoin.js
+++ b/js/gatecoin.js
@@ -13,7 +13,7 @@ module.exports = class gatecoin extends Exchange {
             'id': 'gatecoin',
             'name': 'Gatecoin',
             'rateLimit': 2000,
-            'countries': ['HK'], // Hong Kong
+            'countries': [ 'HK' ], // Hong Kong
             'comment': 'a regulated/licensed exchange',
             'has': {
                 'CORS': false,
diff --git a/js/gateio.js b/js/gateio.js
index ddabd304cfe03..ee27b6bdb2064 100644
--- a/js/gateio.js
+++ b/js/gateio.js
@@ -12,7 +12,7 @@ module.exports = class gateio extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'gateio',
             'name': 'Gate.io',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'version': '2',
             'rateLimit': 1000,
             'has': {
diff --git a/js/gdax.js b/js/gdax.js
index caaa604ab0df9..aeb05ef47dcb7 100644
--- a/js/gdax.js
+++ b/js/gdax.js
@@ -12,7 +12,7 @@ module.exports = class gdax extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'gdax',
             'name': 'GDAX',
-            'countries': ['US'],
+            'countries': [ 'US' ],
             'rateLimit': 1000,
             'userAgent': this.userAgents['chrome'],
             'has': {
diff --git a/js/gemini.js b/js/gemini.js
index 10ddf3766450d..4db1543c43a20 100644
--- a/js/gemini.js
+++ b/js/gemini.js
@@ -12,7 +12,7 @@ module.exports = class gemini extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'gemini',
             'name': 'Gemini',
-            'countries': ['US'],
+            'countries': [ 'US' ],
             'rateLimit': 1500, // 200 for private API
             'version': 'v1',
             'has': {
diff --git a/js/hadax.js b/js/hadax.js
index fee514ae63e33..3a1fbe6f084df 100644
--- a/js/hadax.js
+++ b/js/hadax.js
@@ -12,7 +12,7 @@ module.exports = class hadax extends huobipro {
         return this.deepExtend (super.describe (), {
             'id': 'hadax',
             'name': 'HADAX',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'hostname': 'api.hadax.com',
             'urls': {
                 'logo': 'https://user-images.githubusercontent.com/1294454/38059952-4756c49e-32f1-11e8-90b9-45c1eccba9cd.jpg',
diff --git a/js/hitbtc.js b/js/hitbtc.js
index 35a3e8bcd7e54..efcd87fe443f2 100644
--- a/js/hitbtc.js
+++ b/js/hitbtc.js
@@ -12,7 +12,7 @@ module.exports = class hitbtc extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'hitbtc',
             'name': 'HitBTC',
-            'countries': ['HK'],
+            'countries': [ 'HK' ],
             'rateLimit': 1500,
             'version': '1',
             'has': {
diff --git a/js/hitbtc2.js b/js/hitbtc2.js
index 061d3747ae698..418ad957fcf77 100644
--- a/js/hitbtc2.js
+++ b/js/hitbtc2.js
@@ -12,7 +12,7 @@ module.exports = class hitbtc2 extends hitbtc {
         return this.deepExtend (super.describe (), {
             'id': 'hitbtc2',
             'name': 'HitBTC v2',
-            'countries': ['HK'],
+            'countries': [ 'HK' ],
             'rateLimit': 1500,
             'version': '2',
             'has': {
diff --git a/js/huobi.js b/js/huobi.js
index 7d5d283ea4b98..eeb1ba53fb0f9 100644
--- a/js/huobi.js
+++ b/js/huobi.js
@@ -12,7 +12,7 @@ module.exports = class huobi extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'huobi',
             'name': 'Huobi',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'rateLimit': 2000,
             'version': 'v3',
             'has': {
diff --git a/js/huobipro.js b/js/huobipro.js
index e208f8480778e..3e68cfcbb103f 100644
--- a/js/huobipro.js
+++ b/js/huobipro.js
@@ -12,7 +12,7 @@ module.exports = class huobipro extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'huobipro',
             'name': 'Huobi Pro',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'rateLimit': 2000,
             'userAgent': this.userAgents['chrome39'],
             'version': 'v1',
diff --git a/js/ice3x.js b/js/ice3x.js
index b89a326b2b4cb..417d1eb907384 100644
--- a/js/ice3x.js
+++ b/js/ice3x.js
@@ -12,7 +12,7 @@ module.exports = class ice3x extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'ice3x',
             'name': 'ICE3X',
-            'countries': ['ZA'], // South Africa
+            'countries': [ 'ZA' ], // South Africa
             'rateLimit': 1000,
             'has': {
                 'fetchCurrencies': true,
diff --git a/js/indodax.js b/js/indodax.js
index 5f3245b640e91..6c91b91d7ea7a 100644
--- a/js/indodax.js
+++ b/js/indodax.js
@@ -12,7 +12,7 @@ module.exports = class indodax extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'indodax',
             'name': 'INDODAX',
-            'countries': ['ID'], // Indonesia
+            'countries': [ 'ID' ], // Indonesia
             'has': {
                 'CORS': false,
                 'createMarketOrder': false,
diff --git a/js/itbit.js b/js/itbit.js
index 396ea426ef770..b3f7f922a93d7 100644
--- a/js/itbit.js
+++ b/js/itbit.js
@@ -13,7 +13,7 @@ module.exports = class itbit extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'itbit',
             'name': 'itBit',
-            'countries': ['US'],
+            'countries': [ 'US' ],
             'rateLimit': 2000,
             'version': 'v1',
             'has': {
diff --git a/js/jubi.js b/js/jubi.js
index 8aba50ac44d9f..ff41dd0f5a57b 100644
--- a/js/jubi.js
+++ b/js/jubi.js
@@ -11,7 +11,7 @@ module.exports = class jubi extends btcbox {
         return this.deepExtend (super.describe (), {
             'id': 'jubi',
             'name': 'jubi.com',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'rateLimit': 1500,
             'version': 'v1',
             'has': {
diff --git a/js/kraken.js b/js/kraken.js
index 0d17ce5626d7c..7eb820f361d54 100644
--- a/js/kraken.js
+++ b/js/kraken.js
@@ -12,7 +12,7 @@ module.exports = class kraken extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'kraken',
             'name': 'Kraken',
-            'countries': ['US'],
+            'countries': [ 'US' ],
             'version': '0',
             'rateLimit': 3000,
             'has': {
diff --git a/js/kucoin.js b/js/kucoin.js
index 669450b52dcd0..aba1147b2ad24 100644
--- a/js/kucoin.js
+++ b/js/kucoin.js
@@ -12,7 +12,7 @@ module.exports = class kucoin extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'kucoin',
             'name': 'Kucoin',
-            'countries': ['HK'], // Hong Kong
+            'countries': [ 'HK' ], // Hong Kong
             'version': 'v1',
             'rateLimit': 2000,
             'userAgent': this.userAgents['chrome'],
diff --git a/js/kuna.js b/js/kuna.js
index aff87a10e0b5c..e52cafc8fdbd0 100644
--- a/js/kuna.js
+++ b/js/kuna.js
@@ -12,7 +12,7 @@ module.exports = class kuna extends acx {
         return this.deepExtend (super.describe (), {
             'id': 'kuna',
             'name': 'Kuna',
-            'countries': ['UA'],
+            'countries': [ 'UA' ],
             'rateLimit': 1000,
             'version': 'v2',
             'has': {
diff --git a/js/lakebtc.js b/js/lakebtc.js
index dcbb4697324fc..16824c10368a6 100644
--- a/js/lakebtc.js
+++ b/js/lakebtc.js
@@ -12,7 +12,7 @@ module.exports = class lakebtc extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'lakebtc',
             'name': 'LakeBTC',
-            'countries': ['US'],
+            'countries': [ 'US' ],
             'version': 'api_v2',
             'has': {
                 'CORS': true,
diff --git a/js/lbank.js b/js/lbank.js
index cefa6d33a5c89..e66eb92e62f30 100644
--- a/js/lbank.js
+++ b/js/lbank.js
@@ -12,7 +12,7 @@ module.exports = class lbank extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'lbank',
             'name': 'LBank',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'version': 'v1',
             'has': {
                 'fetchTickers': true,
diff --git a/js/liqui.js b/js/liqui.js
index d715d655bb914..f4ec626b350fd 100644
--- a/js/liqui.js
+++ b/js/liqui.js
@@ -8,7 +8,7 @@ module.exports = class liqui extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'liqui',
             'name': 'Liqui',
-            'countries': ['UA'],
+            'countries': [ 'UA' ],
             'rateLimit': 3000,
             'version': '3',
             'userAgent': this.userAgents['chrome'],
diff --git a/js/lykke.js b/js/lykke.js
index e04d75cc870a6..ac57f82492650 100644
--- a/js/lykke.js
+++ b/js/lykke.js
@@ -11,7 +11,7 @@ module.exports = class lykke extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'lykke',
             'name': 'Lykke',
-            'countries': ['CH'],
+            'countries': [ 'CH' ],
             'version': 'v1',
             'rateLimit': 200,
             'has': {
diff --git a/js/mercado.js b/js/mercado.js
index a50d16d9bd236..3fc6f1a3509f8 100644
--- a/js/mercado.js
+++ b/js/mercado.js
@@ -12,7 +12,7 @@ module.exports = class mercado extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'mercado',
             'name': 'Mercado Bitcoin',
-            'countries': ['BR'], // Brazil
+            'countries': [ 'BR' ], // Brazil
             'rateLimit': 1000,
             'version': 'v3',
             'has': {
diff --git a/js/negociecoins.js b/js/negociecoins.js
index df552c61550d6..2c44ec66e38bd 100644
--- a/js/negociecoins.js
+++ b/js/negociecoins.js
@@ -11,7 +11,7 @@ module.exports = class negociecoins extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'negociecoins',
             'name': 'NegocieCoins',
-            'countries': ['BR'],
+            'countries': [ 'BR' ],
             'rateLimit': 1000,
             'version': 'v3',
             'has': {
diff --git a/js/nova.js b/js/nova.js
index 34c4945779dc3..b2036626dbb88 100644
--- a/js/nova.js
+++ b/js/nova.js
@@ -12,7 +12,7 @@ module.exports = class nova extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'nova',
             'name': 'Novaexchange',
-            'countries': ['TZ'], // Tanzania
+            'countries': [ 'TZ' ], // Tanzania
             'rateLimit': 2000,
             'version': 'v2',
             'has': {
diff --git a/js/okcoincny.js b/js/okcoincny.js
index ad4d33d14c1dd..cf0d55bc3f403 100644
--- a/js/okcoincny.js
+++ b/js/okcoincny.js
@@ -11,7 +11,7 @@ module.exports = class okcoincny extends okcoinusd {
         return this.deepExtend (super.describe (), {
             'id': 'okcoincny',
             'name': 'OKCoin CNY',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'has': {
                 'CORS': false,
             },
diff --git a/js/poloniex.js b/js/poloniex.js
index 271b96527d245..ffb78e4a782fa 100644
--- a/js/poloniex.js
+++ b/js/poloniex.js
@@ -12,7 +12,7 @@ module.exports = class poloniex extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'poloniex',
             'name': 'Poloniex',
-            'countries': ['US'],
+            'countries': [ 'US' ],
             'rateLimit': 1000, // up to 6 calls per second
             'has': {
                 'createDepositAddress': true,
diff --git a/js/quadrigacx.js b/js/quadrigacx.js
index f720261ac6b09..9798bba3b8d8c 100644
--- a/js/quadrigacx.js
+++ b/js/quadrigacx.js
@@ -12,7 +12,7 @@ module.exports = class quadrigacx extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'quadrigacx',
             'name': 'QuadrigaCX',
-            'countries': ['CA'],
+            'countries': [ 'CA' ],
             'rateLimit': 1000,
             'version': 'v2',
             'has': {
diff --git a/js/southxchange.js b/js/southxchange.js
index 1830f2a30b1fd..3e6c8fbab0023 100644
--- a/js/southxchange.js
+++ b/js/southxchange.js
@@ -12,7 +12,7 @@ module.exports = class southxchange extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'southxchange',
             'name': 'SouthXchange',
-            'countries': ['AR'], // Argentina
+            'countries': [ 'AR' ], // Argentina
             'rateLimit': 1000,
             'has': {
                 'CORS': true,
diff --git a/js/surbitcoin.js b/js/surbitcoin.js
index b1f8763df02fa..b67310033069a 100644
--- a/js/surbitcoin.js
+++ b/js/surbitcoin.js
@@ -11,7 +11,7 @@ module.exports = class surbitcoin extends foxbit {
         return this.deepExtend (super.describe (), {
             'id': 'surbitcoin',
             'name': 'SurBitcoin',
-            'countries': ['VE'],
+            'countries': [ 'VE' ],
             'has': {
                 'CORS': false,
             },
diff --git a/js/therock.js b/js/therock.js
index 9a2fe64acbe9a..070184b52ee2e 100644
--- a/js/therock.js
+++ b/js/therock.js
@@ -12,7 +12,7 @@ module.exports = class therock extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'therock',
             'name': 'TheRockTrading',
-            'countries': ['MT'],
+            'countries': [ 'MT' ],
             'rateLimit': 1000,
             'version': 'v1',
             'has': {
diff --git a/js/tidebit.js b/js/tidebit.js
index ec9dbd1cb6f76..cc0be743a518f 100644
--- a/js/tidebit.js
+++ b/js/tidebit.js
@@ -12,7 +12,7 @@ module.exports = class tidebit extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'tidebit',
             'name': 'TideBit',
-            'countries': ['HK'],
+            'countries': [ 'HK' ],
             'rateLimit': 1000,
             'version': 'v2',
             'has': {
diff --git a/js/tidex.js b/js/tidex.js
index f51eb20ee31f7..7a8bb0473e6a6 100644
--- a/js/tidex.js
+++ b/js/tidex.js
@@ -11,7 +11,7 @@ module.exports = class tidex extends liqui {
         return this.deepExtend (super.describe (), {
             'id': 'tidex',
             'name': 'Tidex',
-            'countries': ['UK'],
+            'countries': [ 'UK' ],
             'rateLimit': 2000,
             'version': '3',
             'has': {
diff --git a/js/urdubit.js b/js/urdubit.js
index ce50d458a8649..e9645608f8962 100644
--- a/js/urdubit.js
+++ b/js/urdubit.js
@@ -11,7 +11,7 @@ module.exports = class urdubit extends foxbit {
         return this.deepExtend (super.describe (), {
             'id': 'urdubit',
             'name': 'UrduBit',
-            'countries': ['PK'],
+            'countries': [ 'PK' ],
             'has': {
                 'CORS': false,
             },
diff --git a/js/vaultoro.js b/js/vaultoro.js
index da769bc3e73a5..5c72b95cd56e1 100644
--- a/js/vaultoro.js
+++ b/js/vaultoro.js
@@ -11,7 +11,7 @@ module.exports = class vaultoro extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'vaultoro',
             'name': 'Vaultoro',
-            'countries': ['CH'],
+            'countries': [ 'CH' ],
             'rateLimit': 1000,
             'version': '1',
             'has': {
diff --git a/js/vbtc.js b/js/vbtc.js
index ce1ebac3bad99..d547b04586045 100644
--- a/js/vbtc.js
+++ b/js/vbtc.js
@@ -11,7 +11,7 @@ module.exports = class vbtc extends foxbit {
         return this.deepExtend (super.describe (), {
             'id': 'vbtc',
             'name': 'VBTC',
-            'countries': ['VN'],
+            'countries': [ 'VN' ],
             'has': {
                 'CORS': false,
             },
diff --git a/js/wex.js b/js/wex.js
index 44fcc5b1ff8f9..d2b9a5a7c3eea 100644
--- a/js/wex.js
+++ b/js/wex.js
@@ -12,7 +12,7 @@ module.exports = class wex extends liqui {
         return this.deepExtend (super.describe (), {
             'id': 'wex',
             'name': 'WEX',
-            'countries': ['NZ'], // New Zealand
+            'countries': [ 'NZ' ], // New Zealand
             'version': '3',
             'has': {
                 'CORS': false,
diff --git a/js/xbtce.js b/js/xbtce.js
index df69855937d14..05b9cf549c37c 100644
--- a/js/xbtce.js
+++ b/js/xbtce.js
@@ -12,7 +12,7 @@ module.exports = class xbtce extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'xbtce',
             'name': 'xBTCe',
-            'countries': ['RU'],
+            'countries': [ 'RU' ],
             'rateLimit': 2000, // responses are cached every 2 seconds
             'version': 'v1',
             'has': {
diff --git a/js/yobit.js b/js/yobit.js
index 2aed81e6d2712..4d0aa9f259693 100644
--- a/js/yobit.js
+++ b/js/yobit.js
@@ -12,7 +12,7 @@ module.exports = class yobit extends liqui {
         return this.deepExtend (super.describe (), {
             'id': 'yobit',
             'name': 'YoBit',
-            'countries': ['RU'],
+            'countries': [ 'RU' ],
             'rateLimit': 3000, // responses are cached every 2 seconds
             'version': '3',
             'has': {
diff --git a/js/yunbi.js b/js/yunbi.js
index 303e7b67cadcc..e87a907d6d2d4 100644
--- a/js/yunbi.js
+++ b/js/yunbi.js
@@ -11,7 +11,7 @@ module.exports = class yunbi extends acx {
         return this.deepExtend (super.describe (), {
             'id': 'yunbi',
             'name': 'YUNBI',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'rateLimit': 1000,
             'version': 'v2',
             'has': {
diff --git a/js/zaif.js b/js/zaif.js
index 8103aef46b758..f70720edcc30b 100644
--- a/js/zaif.js
+++ b/js/zaif.js
@@ -12,7 +12,7 @@ module.exports = class zaif extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'zaif',
             'name': 'Zaif',
-            'countries': ['JP'],
+            'countries': [ 'JP' ],
             'rateLimit': 2000,
             'version': '1',
             'has': {
diff --git a/js/zb.js b/js/zb.js
index 998308456fb0b..af77675cf2df2 100644
--- a/js/zb.js
+++ b/js/zb.js
@@ -12,7 +12,7 @@ module.exports = class zb extends Exchange {
         return this.deepExtend (super.describe (), {
             'id': 'zb',
             'name': 'ZB',
-            'countries': ['CN'],
+            'countries': [ 'CN' ],
             'rateLimit': 1000,
             'version': 'v1',
             'has': {