diff --git a/js/.eslintrc.json b/js/.eslintrc.json
index 42f9b0554..ffd4f03f3 100644
--- a/js/.eslintrc.json
+++ b/js/.eslintrc.json
@@ -13,6 +13,7 @@
   "rules": {
     "curly": ["error", "all"],
     "jsx-quotes": ["error", "prefer-single"],
+    "newline-after-var": ["error", "always"],
     "no-alert": "error",
     "no-debugger": "error",
     "no-duplicate-imports": ["error", {
@@ -20,6 +21,7 @@
     }],
     "object-curly-spacing": ["error", "always"],
     "object-property-newline": 0,
+    "one-var-declaration-per-line": ["error", "always"],
     "padded-blocks": ["error", {
       "blocks": "never",
       "classes": "never",
diff --git a/js/src/3rdparty/email-verification/index.js b/js/src/3rdparty/email-verification/index.js
index b1a868b0b..ea762fb5b 100644
--- a/js/src/3rdparty/email-verification/index.js
+++ b/js/src/3rdparty/email-verification/index.js
@@ -49,6 +49,7 @@ export const hasReceivedCode = (email, address, isTestnet = false) => {
 
 export const postToServer = (query, isTestnet = false) => {
   const port = isTestnet ? 28443 : 18443;
+
   query = stringify(query);
 
   return fetch(`https://email-verification.parity.io:${port}/?${query}`, {
diff --git a/js/src/3rdparty/sms-verification/index.js b/js/src/3rdparty/sms-verification/index.js
index 3fd3b0512..ba7563c35 100644
--- a/js/src/3rdparty/sms-verification/index.js
+++ b/js/src/3rdparty/sms-verification/index.js
@@ -49,6 +49,7 @@ export const hasReceivedCode = (number, address, isTestnet = false) => {
 
 export const postToServer = (query, isTestnet = false) => {
   const port = isTestnet ? 8443 : 443;
+
   query = stringify(query);
 
   return fetch(`https://sms-verification.parity.io:${port}/?${query}`, {
diff --git a/js/src/abi/decoder/decoder.js b/js/src/abi/decoder/decoder.js
index c1cac6034..1a81c591b 100644
--- a/js/src/abi/decoder/decoder.js
+++ b/js/src/abi/decoder/decoder.js
@@ -37,6 +37,7 @@ export default class Decoder {
 
     return params.map((param) => {
       const result = Decoder.decodeParam(param, slices, offset);
+
       offset = result.newOffset;
       return result.token;
     });
@@ -121,6 +122,7 @@ export default class Decoder {
 
         for (let idx = 0; idx < length; idx++) {
           const result = Decoder.decodeParam(param.subtype, slices, newOffset);
+
           newOffset = result.newOffset;
           tokens.push(result.token);
         }
@@ -132,6 +134,7 @@ export default class Decoder {
 
         for (let idx = 0; idx < param.length; idx++) {
           const result = Decoder.decodeParam(param.subtype, slices, newOffset);
+
           newOffset = result.newOffset;
           tokens.push(result.token);
         }
diff --git a/js/src/abi/decoder/decoder.spec.js b/js/src/abi/decoder/decoder.spec.js
index cb8f69173..d06e6b716 100644
--- a/js/src/abi/decoder/decoder.spec.js
+++ b/js/src/abi/decoder/decoder.spec.js
@@ -100,6 +100,7 @@ describe('abi/decoder/Decoder', () => {
 
     it('throws an error on invalid param type', () => {
       const pt = new ParamType('address');
+
       pt._type = 'noMatch';
 
       expect(() => Decoder.decodeParam(pt)).to.throw(/noMatch/);
diff --git a/js/src/abi/encoder/encoder.spec.js b/js/src/abi/encoder/encoder.spec.js
index 27592fb54..e847710a2 100644
--- a/js/src/abi/encoder/encoder.spec.js
+++ b/js/src/abi/encoder/encoder.spec.js
@@ -93,6 +93,7 @@ describe('abi/encoder/Encoder', () => {
 
     it('throws an Error on invalid tokens', () => {
       const token = new Token('address');
+
       token._type = 'noMatch';
 
       expect(() => Encoder.encodeToken(token)).to.throw(/noMatch/);
diff --git a/js/src/abi/spec/event/event.js b/js/src/abi/spec/event/event.js
index 025f2c316..f82bcd4bc 100644
--- a/js/src/abi/spec/event/event.js
+++ b/js/src/abi/spec/event/event.js
@@ -27,6 +27,7 @@ export default class Event {
     this._anonymous = !!abi.anonymous;
 
     const { id, name, signature } = eventSignature(abi.name, this.inputParamTypes());
+
     this._id = id;
     this._name = name;
     this._signature = signature;
diff --git a/js/src/abi/spec/event/eventParam.spec.js b/js/src/abi/spec/event/eventParam.spec.js
index e285707f2..1b9497f90 100644
--- a/js/src/abi/spec/event/eventParam.spec.js
+++ b/js/src/abi/spec/event/eventParam.spec.js
@@ -20,6 +20,7 @@ describe('abi/spec/event/EventParam', () => {
   describe('constructor', () => {
     it('sets the properties', () => {
       const param = new EventParam('foo', 'uint', true);
+
       expect(param.name).to.equal('foo');
       expect(param.kind.type).to.equal('uint');
       expect(param.indexed).to.be.true;
diff --git a/js/src/abi/spec/function.js b/js/src/abi/spec/function.js
index 04e059c47..2c0af4143 100644
--- a/js/src/abi/spec/function.js
+++ b/js/src/abi/spec/function.js
@@ -28,6 +28,7 @@ export default class Func {
     this._outputs = Param.toParams(abi.outputs || []);
 
     const { id, name, signature } = methodSignature(abi.name, this.inputParamTypes());
+
     this._id = id;
     this._name = name;
     this._signature = signature;
diff --git a/js/src/abi/util/pad.js b/js/src/abi/util/pad.js
index ce8777974..7004a8646 100644
--- a/js/src/abi/util/pad.js
+++ b/js/src/abi/util/pad.js
@@ -47,6 +47,7 @@ function stringToBytes (input) {
     return input;
   } else if (input.substr(0, 2) === '0x') {
     const matches = input.substr(2).toLowerCase().match(/.{1,2}/g) || [];
+
     return matches.map((value) => parseInt(value, 16));
   } else {
     return input.split('').map((char) => char.charCodeAt(0));
diff --git a/js/src/abi/util/signature.js b/js/src/abi/util/signature.js
index ad2b7ca5b..2ae1812a4 100644
--- a/js/src/abi/util/signature.js
+++ b/js/src/abi/util/signature.js
@@ -40,6 +40,7 @@ function parseName (name) {
   }
 
   const trimmedName = strName.slice(0, idx);
+
   return {
     strName: trimmedName,
     name: trimmedName
diff --git a/js/src/abi/util/sliceAs.spec.js b/js/src/abi/util/sliceAs.spec.js
index 9ad4cf831..db4dd8e41 100644
--- a/js/src/abi/util/sliceAs.spec.js
+++ b/js/src/abi/util/sliceAs.spec.js
@@ -22,6 +22,7 @@ describe('abi/util/sliceAs', () => {
   describe('asAddress', () => {
     it('correctly returns the last 0x40 characters', () => {
       const address = '1111111111222222222233333333334444444444';
+
       expect(asAddress(`000000000000000000000000${address}`)).to.equal(`0x${address}`);
     });
   });
diff --git a/js/src/api/contract/contract.js b/js/src/api/contract/contract.js
index df134fbfd..702214a74 100644
--- a/js/src/api/contract/contract.js
+++ b/js/src/api/contract/contract.js
@@ -258,6 +258,7 @@ export default class Contract {
     if (!func.constant) {
       func.postTransaction = (options, values = []) => {
         const _options = this._encodeOptions(func, this._addOptionsTo(options), values);
+
         return this._api.parity
           .postTransaction(_options)
           .catch((error) => {
@@ -268,6 +269,7 @@ export default class Contract {
 
       func.estimateGas = (options, values = []) => {
         const _options = this._encodeOptions(func, this._addOptionsTo(options), values);
+
         return this._api.eth
           .estimateGas(_options)
           .catch((error) => {
@@ -303,6 +305,7 @@ export default class Contract {
     }
 
     const options = this._getFilterOptions(event, _options);
+
     options.fromBlock = 0;
     options.toBlock = 'latest';
 
@@ -318,6 +321,7 @@ export default class Contract {
 
     if (eventName && !event) {
       const events = this._events.map((evt) => evt.name).join(', ');
+
       throw new Error(`${eventName} is not a valid eventName, subscribe using one of ${events} (or null to include all)`);
     }
 
@@ -344,12 +348,14 @@ export default class Contract {
 
   _createEthFilter (event = null, _options) {
     const options = this._getFilterOptions(event, _options);
+
     return this._api.eth.newFilter(options);
   }
 
   subscribe (eventName = null, options = {}, callback, autoRemove) {
     try {
       const event = this._findEvent(eventName);
+
       return this._subscribe(event, options, callback, autoRemove);
     } catch (e) {
       return Promise.reject(e);
@@ -374,6 +380,7 @@ export default class Contract {
   _subscribe (event = null, _options, callback, autoRemove = false) {
     const subscriptionId = nextSubscriptionId++;
     const { skipInitFetch } = _options;
+
     delete _options['skipInitFetch'];
 
     return this
diff --git a/js/src/api/contract/contract.spec.js b/js/src/api/contract/contract.spec.js
index 0258aea58..5f408e1da 100644
--- a/js/src/api/contract/contract.spec.js
+++ b/js/src/api/contract/contract.spec.js
@@ -143,6 +143,7 @@ describe('api/contract/Contract', () => {
           type: 'event'
         }
       ]);
+
       contract.at('6789');
 
       expect(Object.keys(contract.instance)).to.deep.equal([
diff --git a/js/src/api/format/input.spec.js b/js/src/api/format/input.spec.js
index 699ac93c2..abe883f0f 100644
--- a/js/src/api/format/input.spec.js
+++ b/js/src/api/format/input.spec.js
@@ -105,6 +105,7 @@ describe('api/format/input', () => {
     ['address'].forEach((input) => {
       it(`formats ${input} address as address`, () => {
         const block = {};
+
         block[input] = address;
         const formatted = inFilter(block)[input];
 
@@ -116,6 +117,7 @@ describe('api/format/input', () => {
     ['fromBlock', 'toBlock'].forEach((input) => {
       it(`formats ${input} number as blockNumber`, () => {
         const block = {};
+
         block[input] = 0x123;
         const formatted = inFilter(block)[input];
 
@@ -186,6 +188,7 @@ describe('api/format/input', () => {
     ['data'].forEach((input) => {
       it(`converts ${input} to hex data`, () => {
         const block = {};
+
         block[input] = '1234';
         const formatted = inData(block[input]);
 
@@ -196,6 +199,7 @@ describe('api/format/input', () => {
     ['from', 'to'].forEach((input) => {
       it(`formats ${input} address as address`, () => {
         const block = {};
+
         block[input] = address;
         const formatted = inOptions(block)[input];
 
@@ -207,6 +211,7 @@ describe('api/format/input', () => {
     ['gas', 'gasPrice', 'value', 'minBlock', 'nonce'].forEach((input) => {
       it(`formats ${input} number as hexnumber`, () => {
         const block = {};
+
         block[input] = 0x123;
         const formatted = inOptions(block)[input];
 
@@ -250,11 +255,13 @@ describe('api/format/input', () => {
   describe('inTraceType', () => {
     it('returns array of types as is', () => {
       const types = ['vmTrace', 'trace', 'stateDiff'];
+
       expect(inTraceType(types)).to.deep.equal(types);
     });
 
     it('formats single string type into array', () => {
       const type = 'vmTrace';
+
       expect(inTraceType(type)).to.deep.equal([type]);
     });
   });
diff --git a/js/src/api/format/output.spec.js b/js/src/api/format/output.spec.js
index cdf96601e..f262a0b6a 100644
--- a/js/src/api/format/output.spec.js
+++ b/js/src/api/format/output.spec.js
@@ -59,6 +59,7 @@ describe('api/format/output', () => {
     ['author', 'miner'].forEach((input) => {
       it(`formats ${input} address as address`, () => {
         const block = {};
+
         block[input] = address;
         const formatted = outBlock(block)[input];
 
@@ -70,6 +71,7 @@ describe('api/format/output', () => {
     ['difficulty', 'gasLimit', 'gasUsed', 'number', 'nonce', 'totalDifficulty'].forEach((input) => {
       it(`formats ${input} number as hexnumber`, () => {
         const block = {};
+
         block[input] = 0x123;
         const formatted = outBlock(block)[input];
 
@@ -81,6 +83,7 @@ describe('api/format/output', () => {
     ['timestamp'].forEach((input) => {
       it(`formats ${input} number as Date`, () => {
         const block = {};
+
         block[input] = 0x57513668;
         const formatted = outBlock(block)[input];
 
@@ -219,6 +222,7 @@ describe('api/format/output', () => {
     ['contractAddress'].forEach((input) => {
       it(`formats ${input} address as address`, () => {
         const block = {};
+
         block[input] = address;
         const formatted = outReceipt(block)[input];
 
@@ -230,6 +234,7 @@ describe('api/format/output', () => {
     ['blockNumber', 'cumulativeGasUsed', 'cumulativeGasUsed', 'gasUsed', 'transactionIndex'].forEach((input) => {
       it(`formats ${input} number as hexnumber`, () => {
         const block = {};
+
         block[input] = 0x123;
         const formatted = outReceipt(block)[input];
 
@@ -283,6 +288,7 @@ describe('api/format/output', () => {
     ['from', 'to'].forEach((input) => {
       it(`formats ${input} address as address`, () => {
         const block = {};
+
         block[input] = address;
         const formatted = outTransaction(block)[input];
 
@@ -294,6 +300,7 @@ describe('api/format/output', () => {
     ['blockNumber', 'gasPrice', 'gas', 'minBlock', 'nonce', 'transactionIndex', 'value'].forEach((input) => {
       it(`formats ${input} number as hexnumber`, () => {
         const block = {};
+
         block[input] = 0x123;
         const formatted = outTransaction(block)[input];
 
diff --git a/js/src/api/subscriptions/eth.spec.js b/js/src/api/subscriptions/eth.spec.js
index 680ff881e..fe8d7b794 100644
--- a/js/src/api/subscriptions/eth.spec.js
+++ b/js/src/api/subscriptions/eth.spec.js
@@ -34,6 +34,7 @@ function stubApi (blockNumber) {
     eth: {
       blockNumber: () => {
         const stub = sinon.stub().resolves(new BigNumber(blockNumber || START_BLOCK))();
+
         _calls.blockNumber.push(stub);
         return stub;
       }
diff --git a/js/src/api/subscriptions/personal.spec.js b/js/src/api/subscriptions/personal.spec.js
index 2359192f0..f27f83f70 100644
--- a/js/src/api/subscriptions/personal.spec.js
+++ b/js/src/api/subscriptions/personal.spec.js
@@ -36,6 +36,7 @@ function stubApi (accounts, info) {
     parity: {
       allAccountsInfo: () => {
         const stub = sinon.stub().resolves(info || TEST_INFO)();
+
         _calls.allAccountsInfo.push(stub);
         return stub;
       }
@@ -43,6 +44,7 @@ function stubApi (accounts, info) {
     eth: {
       accounts: () => {
         const stub = sinon.stub().resolves(accounts || TEST_LIST)();
+
         _calls.listAccounts.push(stub);
         return stub;
       }
diff --git a/js/src/api/transport/error.js b/js/src/api/transport/error.js
index 512d4289e..331852a38 100644
--- a/js/src/api/transport/error.js
+++ b/js/src/api/transport/error.js
@@ -44,6 +44,7 @@ export const ERROR_CODES = {
 export default class TransportError extends ExtendableError {
   constructor (method, code, message) {
     const m = `${method}: ${code}: ${message}`;
+
     super(m);
 
     this.code = code;
diff --git a/js/src/api/transport/http/http.js b/js/src/api/transport/http/http.js
index 36e0ae1b7..82ab2c4ac 100644
--- a/js/src/api/transport/http/http.js
+++ b/js/src/api/transport/http/http.js
@@ -75,6 +75,7 @@ export default class Http extends JsonRpcBase {
           console.error(`${method}(${JSON.stringify(params)}): ${response.error.code}: ${response.error.message}`);
 
           const error = new TransportError(method, response.error.code, response.error.message);
+
           throw error;
         }
 
diff --git a/js/src/api/transport/ws/ws.js b/js/src/api/transport/ws/ws.js
index ef739ae13..ca5bde26f 100644
--- a/js/src/api/transport/ws/ws.js
+++ b/js/src/api/transport/ws/ws.js
@@ -212,6 +212,7 @@ export default class Ws extends JsonRpcBase {
         }
 
         const error = new TransportError(method, result.error.code, result.error.message);
+
         reject(error);
 
         delete this._messages[result.id];
diff --git a/js/src/api/util/format.js b/js/src/api/util/format.js
index f6976c13b..cfd642cdb 100644
--- a/js/src/api/util/format.js
+++ b/js/src/api/util/format.js
@@ -48,11 +48,13 @@ export function asciiToHex (string) {
 
 export function padRight (input, length) {
   const value = toHex(input).substr(2, length * 2);
+
   return '0x' + value + range(length * 2 - value.length).map(() => '0').join('');
 }
 
 export function padLeft (input, length) {
   const value = toHex(input).substr(2, length * 2);
+
   return '0x' + range(length * 2 - value.length).map(() => '0').join('') + value;
 }
 
diff --git a/js/src/api/util/sha3.js b/js/src/api/util/sha3.js
index f07f88068..e68073103 100644
--- a/js/src/api/util/sha3.js
+++ b/js/src/api/util/sha3.js
@@ -24,6 +24,7 @@ export function sha3 (value, options) {
 
   if (forceHex || (!options && isHex(value))) {
     const bytes = hexToBytes(value);
+
     return sha3(bytes);
   }
 
diff --git a/js/src/api/util/sha3.spec.js b/js/src/api/util/sha3.spec.js
index 2945ce51a..147b844f3 100644
--- a/js/src/api/util/sha3.spec.js
+++ b/js/src/api/util/sha3.spec.js
@@ -24,6 +24,7 @@ describe('api/util/sha3', () => {
 
     it('constructs a correct sha3 encoded as hex', () => {
       const key = '000000000000000000000000391694e7e0b0cce554cb130d723a9d27458f9298' + '0000000000000000000000000000000000000000000000000000000000000001';
+
       expect(sha3(key, { encoding: 'hex' })).to.equal('0x6661e9d6d8b923d5bbaab1b96e1dd51ff6ea2a93520fdc9eb75d059238b8c5e9');
       expect(sha3(`0x${key}`, { encoding: 'hex' })).to.equal('0x6661e9d6d8b923d5bbaab1b96e1dd51ff6ea2a93520fdc9eb75d059238b8c5e9');
     });
diff --git a/js/src/contracts/badgereg.js b/js/src/contracts/badgereg.js
index b9b10c19f..18cb872fc 100644
--- a/js/src/contracts/badgereg.js
+++ b/js/src/contracts/badgereg.js
@@ -67,6 +67,7 @@ export default class BadgeReg {
         return this.fetchMeta(id)
           .then(({ title, icon }) => {
             const data = { address, id, name, title, icon };
+
             this.certifiers[id] = data;
             return data;
           });
@@ -87,6 +88,7 @@ export default class BadgeReg {
         return this.fetchMeta(id)
           .then(({ title, icon }) => {
             const data = { address, id, name, title, icon };
+
             this.certifiers[id] = data;
             return data;
           });
diff --git a/js/src/contracts/verification.js b/js/src/contracts/verification.js
index 3940e0e18..407a61917 100644
--- a/js/src/contracts/verification.js
+++ b/js/src/contracts/verification.js
@@ -76,6 +76,7 @@ export const awaitPuzzle = (api, contract, account) => {
           from: block.toNumber(),
           filter: (log) => log.params.who.value === account
         });
+
         subscription.once('error', reject);
         subscription.once('log', subscription.unsubscribe);
         subscription.once('log', resolve);
diff --git a/js/src/dapps/basiccoin/Deploy/Deployment/deployment.js b/js/src/dapps/basiccoin/Deploy/Deployment/deployment.js
index 63f0bbe21..e118bca80 100644
--- a/js/src/dapps/basiccoin/Deploy/Deployment/deployment.js
+++ b/js/src/dapps/basiccoin/Deploy/Deployment/deployment.js
@@ -293,6 +293,7 @@ export default class Deployment extends Component {
         this.setState({ deployState: 'Gas estimated, Posting transaction to the network' });
 
         const gasPassed = gas.mul(1.2);
+
         options.gas = gasPassed.toFixed(0);
         console.log(`gas estimated at ${gas.toFormat(0)}, passing ${gasPassed.toFormat(0)}`);
 
diff --git a/js/src/dapps/basiccoin/Transfer/Events/events.js b/js/src/dapps/basiccoin/Transfer/Events/events.js
index c85898fc9..0febd38a0 100644
--- a/js/src/dapps/basiccoin/Transfer/Events/events.js
+++ b/js/src/dapps/basiccoin/Transfer/Events/events.js
@@ -37,6 +37,7 @@ export default class Events extends Component {
     loadAllTokens()
       .then((tokens) => {
         const addresses = tokens.map((token) => token.address);
+
         this.setState({ tokens });
         return subscribeEvents(addresses, this.eventCallback);
       })
@@ -144,6 +145,7 @@ export default class Events extends Component {
       .concat(pendingEvents)
       .filter((log) => !minedNew.find((event) => event.transactionHash === log.transactionHash));
     const events = [].concat(pendingNew).concat(minedNew);
+
     this.setState({ loading: false, events, minedEvents: minedNew, pendingEvents: pendingNew });
   }
 }
diff --git a/js/src/dapps/basiccoin/Transfer/Send/send.js b/js/src/dapps/basiccoin/Transfer/Send/send.js
index 74ef907a7..204dd0768 100644
--- a/js/src/dapps/basiccoin/Transfer/Send/send.js
+++ b/js/src/dapps/basiccoin/Transfer/Send/send.js
@@ -275,6 +275,7 @@ export default class Send extends Component {
         this.setState({ sendState: 'Gas estimated, Posting transaction to the network' });
 
         const gasPassed = gas.mul(1.2);
+
         options.gas = gasPassed.toFixed(0);
         console.log(`gas estimated at ${gas.toFormat(0)}, passing ${gasPassed.toFormat(0)}`);
 
diff --git a/js/src/dapps/basiccoin/services.js b/js/src/dapps/basiccoin/services.js
index 0344df805..79df78097 100644
--- a/js/src/dapps/basiccoin/services.js
+++ b/js/src/dapps/basiccoin/services.js
@@ -105,6 +105,7 @@ export function attachInstances () {
     ])
     .then(([registryAddress, netChain]) => {
       const registry = api.newContract(abis.registry, registryAddress).instance;
+
       isTest = ['morden', 'ropsten', 'testnet'].includes(netChain);
 
       console.log(`contract was found at registry=${registryAddress}`);
@@ -180,6 +181,7 @@ export function loadOwnedTokens (addresses) {
     .then((_tokens) => {
       const tokens = _tokens.reduce((tokens, token) => {
         const [address, owner, tokenreg] = token;
+
         tokens[owner] = tokens[owner] || [];
         tokens[owner].push({ address, owner, tokenreg });
         return tokens;
@@ -212,6 +214,7 @@ export function loadAllTokens () {
         .all(
           _tokens.map(([address, owner, tokenreg]) => {
             const isGlobal = tokenreg === tokenregInstance.address;
+
             tokens.push({ address, owner, tokenreg, isGlobal });
             return registries[tokenreg].fromAddress.call({}, [address]);
           })
@@ -219,6 +222,7 @@ export function loadAllTokens () {
         .then((coins) => {
           return tokens.map((token, index) => {
             const [id, tla, base, name, owner] = coins[index];
+
             token.coin = { id, tla, base, name, owner };
             return token;
           });
@@ -243,6 +247,7 @@ export function loadBalances (addresses) {
       .then((_balances) => {
         return tokens.map((token, tindex) => {
           const balances = _balances[tindex];
+
           token.balances = addresses.map((address, aindex) => {
             return { address, balance: balances[aindex] };
           });
diff --git a/js/src/dapps/dappreg/Dapp/dapp.js b/js/src/dapps/dappreg/Dapp/dapp.js
index 2a89d6cbd..2b5e9380b 100644
--- a/js/src/dapps/dappreg/Dapp/dapp.js
+++ b/js/src/dapps/dappreg/Dapp/dapp.js
@@ -100,6 +100,7 @@ export default class Dapp extends Component {
     const hash = app[`${type}Hash`];
 
     let overlayImage = null;
+
     if (withImage && hash) {
       overlayImage = (
         <img
diff --git a/js/src/dapps/dappreg/SelectDapp/selectDapp.js b/js/src/dapps/dappreg/SelectDapp/selectDapp.js
index 8b726eaf3..70bc01232 100644
--- a/js/src/dapps/dappreg/SelectDapp/selectDapp.js
+++ b/js/src/dapps/dappreg/SelectDapp/selectDapp.js
@@ -42,6 +42,7 @@ export default class SelectDapp extends Component {
     }
 
     let overlayImg = null;
+
     if (this.dappsStore.currentApp.imageHash) {
       overlayImg = (
         <img src={ `/api/content/${this.dappsStore.currentApp.imageHash.substr(2)}` } />
diff --git a/js/src/dapps/dappreg/dappsStore.js b/js/src/dapps/dappreg/dappsStore.js
index 2c6fc689e..27f905da1 100644
--- a/js/src/dapps/dappreg/dappsStore.js
+++ b/js/src/dapps/dappreg/dappsStore.js
@@ -145,6 +145,7 @@ export default class DappsStore {
   @action setApps = (apps) => {
     this.sortApps(apps.filter((app) => {
       const bnid = new BigNumber(app.id);
+
       return bnid.gt(0);
     }));
 
@@ -194,6 +195,7 @@ export default class DappsStore {
         .keys(accountsInfo)
         .map((address) => {
           const account = accountsInfo[address];
+
           account.address = address;
           return account;
         });
diff --git a/js/src/dapps/githubhint/Application/application.js b/js/src/dapps/githubhint/Application/application.js
index f0599a8d8..008a2326d 100644
--- a/js/src/dapps/githubhint/Application/application.js
+++ b/js/src/dapps/githubhint/Application/application.js
@@ -78,6 +78,7 @@ export default class Application extends Component {
     const { fromAddress, registerBusy, url, urlError, contentHash, contentHashError, contentHashOwner, commit, commitError, registerType, repo, repoError } = this.state;
 
     let hashClass = null;
+
     if (contentHashError) {
       hashClass = contentHashOwner !== fromAddress ? styles.hashError : styles.hashWarning;
     } else if (contentHash) {
@@ -85,6 +86,7 @@ export default class Application extends Component {
     }
 
     let valueInputs = null;
+
     if (registerType === 'content') {
       valueInputs = [
         <div className={ styles.capture } key='repo'>
@@ -275,6 +277,7 @@ export default class Application extends Component {
     // TODO: field validation
     if (!urlError) {
       const parts = url.split('/');
+
       hasContent = parts.length !== 0;
 
       if (parts[2] === 'github.com' || parts[2] === 'raw.githubusercontent.com') {
@@ -366,6 +369,7 @@ export default class Application extends Component {
 
   registerContent (contentRepo, contentCommit) {
     const { contentHash, fromAddress, instance } = this.state;
+
     contentCommit = contentCommit.substr(0, 2) === '0x' ? contentCommit : `0x${contentCommit}`;
 
     const eventId = nextEventId++;
@@ -407,6 +411,7 @@ export default class Application extends Component {
           });
 
           const gasPassed = gas.mul(1.2);
+
           options.gas = gasPassed.toFixed(0);
           console.log(`gas estimated at ${gas.toFormat(0)}, passing ${gasPassed.toFormat(0)}`);
 
@@ -456,6 +461,7 @@ export default class Application extends Component {
           });
 
           const gasPassed = gas.mul(1.2);
+
           options.gas = gasPassed.toFixed(0);
           console.log(`gas estimated at ${gas.toFormat(0)}, passing ${gasPassed.toFormat(0)}`);
 
diff --git a/js/src/dapps/localtx/Application/application.js b/js/src/dapps/localtx/Application/application.js
index 0e2642657..a97fcd3a8 100644
--- a/js/src/dapps/localtx/Application/application.js
+++ b/js/src/dapps/localtx/Application/application.js
@@ -66,6 +66,7 @@ export default class Application extends Component {
         .filter(tx => tx.isLocal)
         .map(data => {
           const tx = data.transaction;
+
           local[tx.hash].transaction = tx;
           local[tx.hash].stats = data.stats;
         });
@@ -73,6 +74,7 @@ export default class Application extends Component {
       // Convert local transactions to array
       const localTransactions = Object.keys(local).map(hash => {
         const data = local[hash];
+
         data.txHash = hash;
         return data;
       });
@@ -124,6 +126,7 @@ export default class Application extends Component {
 
   renderQueueSummary () {
     const { transactions } = this.state;
+
     if (!transactions.length) {
       return null;
     }
@@ -146,6 +149,7 @@ export default class Application extends Component {
 
   renderQueue () {
     const { blockNumber, transactions } = this.state;
+
     if (!transactions.length) {
       return (
         <h3>The queue seems is empty.</h3>
@@ -177,6 +181,7 @@ export default class Application extends Component {
 
   renderLocals () {
     const { localTransactions } = this.state;
+
     if (!localTransactions.length) {
       return (
         <h3>You haven't sent any transactions yet.</h3>
diff --git a/js/src/dapps/localtx/Transaction/transaction.js b/js/src/dapps/localtx/Transaction/transaction.js
index 8eecaad45..0dcac1f23 100644
--- a/js/src/dapps/localtx/Transaction/transaction.js
+++ b/js/src/dapps/localtx/Transaction/transaction.js
@@ -168,11 +168,13 @@ export class Transaction extends BaseTransaction {
 
   renderTime (firstSeen) {
     const { blockNumber } = this.props;
+
     if (!firstSeen) {
       return 'never';
     }
 
     const timeInMinutes = blockNumber.sub(firstSeen).mul(14).div(60).toFormat(1);
+
     return `${timeInMinutes} minutes ago`;
   }
 }
diff --git a/js/src/dapps/registry/Container.js b/js/src/dapps/registry/Container.js
index 3d5cf1dfe..a84bfd3a9 100644
--- a/js/src/dapps/registry/Container.js
+++ b/js/src/dapps/registry/Container.js
@@ -56,6 +56,7 @@ export default connect(
   // react -> redux connection
   (dispatch) => {
     const bound = bindActionCreators(actions, dispatch);
+
     bound.addresses = bindActionCreators(actions.addresses, dispatch);
     bound.accounts = bindActionCreators(actions.accounts, dispatch);
     bound.lookup = bindActionCreators(actions.lookup, dispatch);
diff --git a/js/src/dapps/registry/Events/actions.js b/js/src/dapps/registry/Events/actions.js
index 6303b1bc5..6fb41ac6e 100644
--- a/js/src/dapps/registry/Events/actions.js
+++ b/js/src/dapps/registry/Events/actions.js
@@ -59,6 +59,7 @@ export const subscribe = (name, from = 0, to = 'pending') =>
               parameters: e.params,
               timestamp: block.timestamp
             };
+
             dispatch(event(name, data));
           })
           .catch((err) => {
diff --git a/js/src/dapps/registry/Events/events.js b/js/src/dapps/registry/Events/events.js
index 58cfc120f..0c79922de 100644
--- a/js/src/dapps/registry/Events/events.js
+++ b/js/src/dapps/registry/Events/events.js
@@ -72,6 +72,7 @@ const renderEvent = (classNames, verb) => (e) => {
 
 const renderDataChanged = (e) => {
   let classNames = styles.dataChanged;
+
   if (e.state === 'pending') {
     classNames += ' ' + styles.pending;
   }
@@ -113,6 +114,7 @@ const renderReverse = (e) => {
   }
 
   const classes = [ styles.reverse ];
+
   if (e.state === 'pending') {
     classes.push(styles.pending);
   }
diff --git a/js/src/dapps/registry/Lookup/actions.js b/js/src/dapps/registry/Lookup/actions.js
index 3a8ef515e..343e6ca45 100644
--- a/js/src/dapps/registry/Lookup/actions.js
+++ b/js/src/dapps/registry/Lookup/actions.js
@@ -29,6 +29,7 @@ export const fail = (action) => ({ type: `${action} error` });
 
 export const lookup = (name, key) => (dispatch, getState) => {
   const { contract } = getState();
+
   if (!contract) {
     return;
   }
diff --git a/js/src/dapps/registry/Names/names.js b/js/src/dapps/registry/Names/names.js
index f9ce24cd7..bd983a97d 100644
--- a/js/src/dapps/registry/Names/names.js
+++ b/js/src/dapps/registry/Names/names.js
@@ -55,6 +55,7 @@ const renderQueue = (queue) => {
 
   const grouped = queue.reduce((grouped, change) => {
     const last = grouped[grouped.length - 1];
+
     if (last && last.action === change.action) {
       last.names.push(change.name);
     } else {
diff --git a/js/src/dapps/registry/Records/records.js b/js/src/dapps/registry/Records/records.js
index 73e513342..6c786bb44 100644
--- a/js/src/dapps/registry/Records/records.js
+++ b/js/src/dapps/registry/Records/records.js
@@ -120,6 +120,7 @@ class Records extends Component {
 
   onSaveClick = () => {
     const { name, type, value } = this.state;
+
     this.props.update(name, type, value);
   };
 
diff --git a/js/src/dapps/registry/Reverse/reverse.js b/js/src/dapps/registry/Reverse/reverse.js
index 0216d00a2..8929c0d9e 100644
--- a/js/src/dapps/registry/Reverse/reverse.js
+++ b/js/src/dapps/registry/Reverse/reverse.js
@@ -59,6 +59,7 @@ class Reverse extends Component {
       );
 
     let addressInput = null;
+
     if (action === 'propose') {
       addressInput = (
         <TextField
diff --git a/js/src/dapps/registry/actions.js b/js/src/dapps/registry/actions.js
index 6f4cef8e9..20cae4b69 100644
--- a/js/src/dapps/registry/actions.js
+++ b/js/src/dapps/registry/actions.js
@@ -50,6 +50,7 @@ export const fetchContract = () => (dispatch) =>
   api.parity.registryAddress()
     .then((address) => {
       const contract = api.newContract(registryAbi, address);
+
       dispatch(setContract(contract));
       dispatch(fetchFee());
       dispatch(fetchOwner());
@@ -65,6 +66,7 @@ export const setFee = (fee) => ({ type: 'set fee', fee });
 
 const fetchFee = () => (dispatch, getState) => {
   const { contract } = getState();
+
   if (!contract) {
     return;
   }
@@ -83,6 +85,7 @@ export const setOwner = (owner) => ({ type: 'set owner', owner });
 
 export const fetchOwner = () => (dispatch, getState) => {
   const { contract } = getState();
+
   if (!contract) {
     return;
   }
diff --git a/js/src/dapps/registry/addresses/accounts-reducer.js b/js/src/dapps/registry/addresses/accounts-reducer.js
index 926536be0..46a2919e7 100644
--- a/js/src/dapps/registry/addresses/accounts-reducer.js
+++ b/js/src/dapps/registry/addresses/accounts-reducer.js
@@ -27,6 +27,7 @@ export default (state = initialState, action) => {
         accounts[account.address] = account;
         return accounts;
       }, {});
+
     return { ...state, all: accounts };
   }
 
diff --git a/js/src/dapps/registry/addresses/actions.js b/js/src/dapps/registry/addresses/actions.js
index 9f4de0817..d9fc002d1 100644
--- a/js/src/dapps/registry/addresses/actions.js
+++ b/js/src/dapps/registry/addresses/actions.js
@@ -29,6 +29,7 @@ export const fetch = () => (dispatch) => {
           address,
           isAccount: true
         }));
+
       dispatch(set(addresses));
     })
     .catch((error) => {
diff --git a/js/src/dapps/registry/addresses/contacts-reducer.js b/js/src/dapps/registry/addresses/contacts-reducer.js
index 401302520..842ac160f 100644
--- a/js/src/dapps/registry/addresses/contacts-reducer.js
+++ b/js/src/dapps/registry/addresses/contacts-reducer.js
@@ -24,6 +24,7 @@ export default (state = initialState, action) => {
         contacts[contact.address] = contact;
         return contacts;
       }, {});
+
     return contacts;
   }
 
diff --git a/js/src/dapps/registry/ui/hash.js b/js/src/dapps/registry/ui/hash.js
index 6eeaab7b2..48c78f1d9 100644
--- a/js/src/dapps/registry/ui/hash.js
+++ b/js/src/dapps/registry/ui/hash.js
@@ -38,6 +38,7 @@ class Hash extends Component {
     const { hash, isTestnet, linked } = this.props;
 
     let shortened = hash.toLowerCase().replace(leading0x, '');
+
     shortened = shortened.length > (6 + 6)
       ? shortened.substr(0, 6) + '...' + shortened.slice(-6)
       : shortened;
diff --git a/js/src/dapps/tokenreg/Accounts/AccountSelector/account-selector.js b/js/src/dapps/tokenreg/Accounts/AccountSelector/account-selector.js
index 6c71578a0..978936ab8 100644
--- a/js/src/dapps/tokenreg/Accounts/AccountSelector/account-selector.js
+++ b/js/src/dapps/tokenreg/Accounts/AccountSelector/account-selector.js
@@ -33,6 +33,7 @@ class AccountSelectorItem extends Component {
     const account = this.props.account;
 
     const props = Object.assign({}, this.props);
+
     delete props.account;
     delete props.onSelectAccount;
 
diff --git a/js/src/dapps/tokenreg/Accounts/AccountSelector/container.js b/js/src/dapps/tokenreg/Accounts/AccountSelector/container.js
index 9711c05bf..60962cddd 100644
--- a/js/src/dapps/tokenreg/Accounts/AccountSelector/container.js
+++ b/js/src/dapps/tokenreg/Accounts/AccountSelector/container.js
@@ -33,6 +33,7 @@ class AccountSelectorContainer extends Component {
 
 const mapStateToProps = (state) => {
   const { accounts } = state;
+
   return { ...accounts };
 };
 
diff --git a/js/src/dapps/tokenreg/Actions/Register/register.js b/js/src/dapps/tokenreg/Actions/Register/register.js
index 2c084cec2..33913497c 100644
--- a/js/src/dapps/tokenreg/Actions/Register/register.js
+++ b/js/src/dapps/tokenreg/Actions/Register/register.js
@@ -188,6 +188,7 @@ export default class RegisterAction extends Component {
 
   onAccountChange = () => {
     const { dialog } = this.refs;
+
     dialog.forceUpdate();
   }
 
diff --git a/js/src/dapps/tokenreg/Inputs/Text/input-text.js b/js/src/dapps/tokenreg/Inputs/Text/input-text.js
index 2184b6b50..c5f92bfb1 100644
--- a/js/src/dapps/tokenreg/Inputs/Text/input-text.js
+++ b/js/src/dapps/tokenreg/Inputs/Text/input-text.js
@@ -98,11 +98,11 @@ export default class InputText extends Component {
 
   onChange = (event) => {
     const value = event.target.value;
+
     // So we can focus on the input after async validation
     event.persist();
 
     const { validationType, contract } = this.props;
-
     const validation = validate(value, validationType, contract);
 
     if (validation instanceof Promise) {
diff --git a/js/src/dapps/tokenreg/Tokens/Token/token.js b/js/src/dapps/tokenreg/Tokens/Token/token.js
index 1500d194e..926e3e9f4 100644
--- a/js/src/dapps/tokenreg/Tokens/Token/token.js
+++ b/js/src/dapps/tokenreg/Tokens/Token/token.js
@@ -381,6 +381,7 @@ export default class Token extends Component {
 
   onUnregister = () => {
     const index = this.props.index;
+
     this.props.handleUnregister(index);
   }
 
diff --git a/js/src/dapps/tokenreg/Tokens/actions.js b/js/src/dapps/tokenreg/Tokens/actions.js
index 8ec37fd17..99dd5d440 100644
--- a/js/src/dapps/tokenreg/Tokens/actions.js
+++ b/js/src/dapps/tokenreg/Tokens/actions.js
@@ -77,6 +77,7 @@ export const loadTokens = () => (dispatch, getState) => {
     .call()
     .then((count) => {
       const tokenCount = parseInt(count);
+
       dispatch(setTokenCount(tokenCount));
 
       for (let i = 0; i < tokenCount; i++) {
@@ -93,7 +94,6 @@ export const loadTokens = () => (dispatch, getState) => {
 export const loadToken = (index) => (dispatch, getState) => {
   const state = getState();
   const contractInstance = state.status.contract.instance;
-
   const userAccounts = state.accounts.list;
   const accountsInfo = state.accounts.accountsInfo;
 
@@ -104,11 +104,9 @@ export const loadToken = (index) => (dispatch, getState) => {
     .call({}, [ parseInt(index) ])
     .then((result) => {
       const tokenOwner = result[4];
-
       const isTokenOwner = userAccounts
         .filter(a => a.address === tokenOwner)
         .length > 0;
-
       const data = {
         index: parseInt(index),
         address: result[0],
@@ -156,8 +154,8 @@ export const loadToken = (index) => (dispatch, getState) => {
 export const queryTokenMeta = (index, query) => (dispatch, getState) => {
   const state = getState();
   const contractInstance = state.status.contract.instance;
-
   const startDate = Date.now();
+
   dispatch(setTokenMetaLoading(index, true));
 
   contractInstance
@@ -184,7 +182,6 @@ export const addTokenMeta = (index, key, value) => (dispatch, getState) => {
   const state = getState();
   const contractInstance = state.status.contract.instance;
   const token = state.tokens.tokens.find(t => t.index === index);
-
   const options = { from: token.owner };
   const values = [ index, key, value ];
 
@@ -203,9 +200,7 @@ export const addTokenMeta = (index, key, value) => (dispatch, getState) => {
 export const addGithubhintURL = (from, key, url) => (dispatch, getState) => {
   const state = getState();
   const contractInstance = state.status.githubhint.instance;
-
   const options = { from };
-
   const values = [ key, url ];
 
   contractInstance
@@ -223,7 +218,6 @@ export const addGithubhintURL = (from, key, url) => (dispatch, getState) => {
 export const unregisterToken = (index) => (dispatch, getState) => {
   const { contract } = getState().status;
   const { instance, owner } = contract;
-
   const values = [ index ];
   const options = {
     from: owner
diff --git a/js/src/environment/integration-tests/fake-backend.js b/js/src/environment/integration-tests/fake-backend.js
index 3c71edaaf..e87adad90 100644
--- a/js/src/environment/integration-tests/fake-backend.js
+++ b/js/src/environment/integration-tests/fake-backend.js
@@ -77,6 +77,7 @@ class FakeRpcServer {
 }
 
 const fakeRpc = new FakeRpcServer();
+
 fakeRpc.start();
 mockedResponses.rpc.forEach(method => fakeRpc.simpleRpc(method.name, method.response));
 
diff --git a/js/src/environment/tests/test-utils.js b/js/src/environment/tests/test-utils.js
index acf7ad7ab..1cd1e37f8 100644
--- a/js/src/environment/tests/test-utils.js
+++ b/js/src/environment/tests/test-utils.js
@@ -20,6 +20,7 @@ const isProd = process.env.NODE_ENV === 'production';
 
 // Component utils for integration tests hooks.
 const TEST_HOOK = 'data-test';
+
 Component.prototype._test = isProd ? noop : testHook;
 Component.prototype._testInherit = isProd ? noop : testHookInherit;
 
@@ -27,6 +28,7 @@ function noop (name) {}
 
 function testHookInherit (name) {
   let hook = this.props[TEST_HOOK];
+
   if (name) {
     hook += `-${name}`;
   }
@@ -37,6 +39,7 @@ function testHookInherit (name) {
 
 function testHook (name) {
   let hook = this.constructor.name;
+
   if (name) {
     hook += `-${name}`;
   }
diff --git a/js/src/index.js b/js/src/index.js
index 72f26e12f..f56620737 100644
--- a/js/src/index.js
+++ b/js/src/index.js
@@ -49,6 +49,7 @@ injectTapEventPlugin();
 if (process.env.NODE_ENV === 'development') {
   // Expose the React Performance Tools on the`window` object
   const Perf = require('react-addons-perf');
+
   window.Perf = Perf;
 }
 
@@ -56,15 +57,18 @@ const AUTH_HASH = '#/auth?';
 const parityUrl = process.env.PARITY_URL || window.location.host;
 
 let token = null;
+
 if (window.location.hash && window.location.hash.indexOf(AUTH_HASH) === 0) {
   token = qs.parse(window.location.hash.substr(AUTH_HASH.length)).token;
 }
 
 const api = new SecureApi(`ws://${parityUrl}`, token);
+
 patchApi(api);
 ContractInstances.create(api);
 
 const store = initStore(api, hashHistory);
+
 store.dispatch({ type: 'initAll', api });
 store.dispatch(setApi(api));
 
diff --git a/js/src/modals/CreateAccount/AccountDetailsGeth/accountDetailsGeth.js b/js/src/modals/CreateAccount/AccountDetailsGeth/accountDetailsGeth.js
index 4d9cde568..49156c126 100644
--- a/js/src/modals/CreateAccount/AccountDetailsGeth/accountDetailsGeth.js
+++ b/js/src/modals/CreateAccount/AccountDetailsGeth/accountDetailsGeth.js
@@ -28,6 +28,7 @@ export default class AccountDetailsGeth extends Component {
 
     const formatted = addresses.map((address, idx) => {
       const comma = !idx ? '' : ((idx === addresses.length - 1) ? ' & ' : ', ');
+
       return `${comma}${address}`;
     }).join('');
 
diff --git a/js/src/modals/CreateAccount/NewGeth/newGeth.js b/js/src/modals/CreateAccount/NewGeth/newGeth.js
index 96e48fa25..8566f76b4 100644
--- a/js/src/modals/CreateAccount/NewGeth/newGeth.js
+++ b/js/src/modals/CreateAccount/NewGeth/newGeth.js
@@ -91,6 +91,7 @@ export default class NewGeth extends Component {
 
     const { available } = this.state;
     const account = available.find((_account) => _account.address === address);
+
     account.checked = checked;
     const selected = available.filter((_account) => _account.checked);
 
diff --git a/js/src/modals/CreateAccount/NewImport/newImport.js b/js/src/modals/CreateAccount/NewImport/newImport.js
index d1dfdc5d6..6e064770f 100644
--- a/js/src/modals/CreateAccount/NewImport/newImport.js
+++ b/js/src/modals/CreateAccount/NewImport/newImport.js
@@ -112,6 +112,7 @@ export default class NewImport extends Component {
 
     if (el.files.length) {
       const reader = new FileReader();
+
       reader.onload = (event) => {
         this.setState({
           walletJson: event.target.result,
diff --git a/js/src/modals/CreateAccount/print.js b/js/src/modals/CreateAccount/print.js
index 1f92744d4..75e11b933 100644
--- a/js/src/modals/CreateAccount/print.js
+++ b/js/src/modals/CreateAccount/print.js
@@ -15,13 +15,17 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 export const onPrint = (window, cb) => {
-  let called = false; let query, queryFn;
+  let called = false;
+  let query;
+  let queryFn;
 
   const onPrint = () => {
     if (queryFn) {
       query.removeListener(queryFn);
     }
+
     window.removeEventListener('afterprint', onPrint, false);
+
     if (!called) {
       called = true;
       cb();
@@ -34,14 +38,17 @@ export const onPrint = (window, cb) => {
         onPrint();
       }
     };
+
     query = window.matchMedia('print');
     query.addListener(queryFn);
   }
+
   window.addEventListener('afterprint', onPrint, false);
 };
 
 export default (html) => {
   const iframe = document.createElement('iframe');
+
   iframe.setAttribute('sandbox', 'allow-modals allow-same-origin allow-scripts');
   iframe.setAttribute('src', '/');
   iframe.setAttribute('style', 'display: none');
diff --git a/js/src/modals/CreateWallet/createWalletStore.js b/js/src/modals/CreateWallet/createWalletStore.js
index 2a3f08a6b..bac9c12a2 100644
--- a/js/src/modals/CreateWallet/createWalletStore.js
+++ b/js/src/modals/CreateWallet/createWalletStore.js
@@ -120,11 +120,13 @@ export default class CreateWalletStore {
 
   @action onNext = () => {
     const stepIndex = this.stepsKeys.findIndex((k) => k === this.step) + 1;
+
     this.step = this.stepsKeys[stepIndex];
   }
 
   @action onChange = (_wallet) => {
     const newWallet = Object.assign({}, this.wallet, _wallet);
+
     this.validateWallet(newWallet);
   }
 
diff --git a/js/src/modals/DeployContract/DetailsStep/detailsStep.js b/js/src/modals/DeployContract/DetailsStep/detailsStep.js
index 041f71527..33002fc22 100644
--- a/js/src/modals/DeployContract/DetailsStep/detailsStep.js
+++ b/js/src/modals/DeployContract/DetailsStep/detailsStep.js
@@ -307,6 +307,7 @@ export default class DetailsStep extends Component {
 
       inputs.forEach((input) => {
         const param = parseAbiType(input.type);
+
         params.push(param.default);
       });
 
diff --git a/js/src/modals/DeployContract/deployContract.js b/js/src/modals/DeployContract/deployContract.js
index d3db3937f..d48c537f4 100644
--- a/js/src/modals/DeployContract/deployContract.js
+++ b/js/src/modals/DeployContract/deployContract.js
@@ -358,6 +358,7 @@ class DeployContract extends Component {
         const body = txhash
           ? <TxHash hash={ txhash } />
           : null;
+
         return (
           <BusyStep
             title={
diff --git a/js/src/modals/ExecuteContract/executeContract.js b/js/src/modals/ExecuteContract/executeContract.js
index a4ac132ee..b16f38e75 100644
--- a/js/src/modals/ExecuteContract/executeContract.js
+++ b/js/src/modals/ExecuteContract/executeContract.js
@@ -329,6 +329,7 @@ class ExecuteContract extends Component {
   onFuncChange = (event, func) => {
     const values = (func.abi.inputs || []).map((input) => {
       const parsedType = parseAbiType(input.type);
+
       return parsedType.default;
     });
 
diff --git a/js/src/modals/ExecuteContract/executeContract.test.js b/js/src/modals/ExecuteContract/executeContract.test.js
index ac1138a17..9006757f6 100644
--- a/js/src/modals/ExecuteContract/executeContract.test.js
+++ b/js/src/modals/ExecuteContract/executeContract.test.js
@@ -69,6 +69,7 @@ const STORE = {
 
 function createApi (result = true) {
   const sha3 = sinon.stub().resolves('0x0000000000000000000000000000000000000000');
+
   sha3.text = sha3;
   return {
     parity: {
diff --git a/js/src/modals/FirstRun/firstRun.js b/js/src/modals/FirstRun/firstRun.js
index 12902af4e..1e2c522ce 100644
--- a/js/src/modals/FirstRun/firstRun.js
+++ b/js/src/modals/FirstRun/firstRun.js
@@ -148,6 +148,7 @@ class FirstRun extends Component {
             onClick={ this.onCreate }
           />
         ];
+
         if (hasAccounts) {
           buttons.unshift(
             <Button
diff --git a/js/src/modals/LoadContract/loadContract.js b/js/src/modals/LoadContract/loadContract.js
index 944ac1716..300965170 100644
--- a/js/src/modals/LoadContract/loadContract.js
+++ b/js/src/modals/LoadContract/loadContract.js
@@ -263,6 +263,7 @@ export default class LoadContract extends Component {
 
   onConfirmRemoval = () => {
     const { deleteId } = this.state;
+
     this.props.onDelete(deleteId);
 
     this.setState({
diff --git a/js/src/modals/SaveContract/saveContract.js b/js/src/modals/SaveContract/saveContract.js
index f687ec222..87b7e3032 100644
--- a/js/src/modals/SaveContract/saveContract.js
+++ b/js/src/modals/SaveContract/saveContract.js
@@ -102,6 +102,7 @@ export default class SaveContract extends Component {
 
   onChangeName = (event, value) => {
     const { name, nameError } = validateName(value);
+
     this.setState({ name, nameError });
   }
 }
diff --git a/js/src/modals/Shapeshift/Value/value.js b/js/src/modals/Shapeshift/Value/value.js
index 1d2f63daf..1ff397c7d 100644
--- a/js/src/modals/Shapeshift/Value/value.js
+++ b/js/src/modals/Shapeshift/Value/value.js
@@ -32,6 +32,7 @@ export default class Value extends Component {
     const { amount, symbol } = this.props;
 
     let value = '';
+
     if (amount) {
       value = new BigNumber(amount).toFormat(3);
     }
diff --git a/js/src/modals/Transfer/Details/details.js b/js/src/modals/Transfer/Details/details.js
index 0ff55b9dd..38dcdec43 100644
--- a/js/src/modals/Transfer/Details/details.js
+++ b/js/src/modals/Transfer/Details/details.js
@@ -66,6 +66,7 @@ class TokenSelect extends Component {
         const token = balance.token;
         const isEth = index === 0;
         let imagesrc = token.image;
+
         if (!imagesrc) {
           imagesrc =
             images[token.address]
@@ -79,6 +80,7 @@ class TokenSelect extends Component {
         } else {
           const format = balance.token.format || 1;
           const decimals = format === 1 ? 0 : Math.min(3, Math.floor(format / 10));
+
           value = new BigNumber(balance.value).div(format).toFormat(decimals);
         }
 
diff --git a/js/src/modals/Transfer/store.js b/js/src/modals/Transfer/store.js
index 63a29c9a1..f463b390e 100644
--- a/js/src/modals/Transfer/store.js
+++ b/js/src/modals/Transfer/store.js
@@ -115,6 +115,7 @@ export default class TransferStore {
     this.api = api;
 
     const { account, balance, gasLimit, senders, newError, sendersBalances } = props;
+
     this.account = account;
     this.balance = balance;
     this.isWallet = account && account.wallet;
@@ -588,6 +589,7 @@ export default class TransferStore {
 
   send () {
     const { options, values } = this._getTransferParams();
+
     options.minBlock = new BigNumber(this.minBlock || 0).gt(0) ? this.minBlock : null;
     log.debug('@send', 'transfer value', options.value && options.value.toFormat());
 
@@ -596,6 +598,7 @@ export default class TransferStore {
 
   _estimateGas (forceToken = false) {
     const { options, values } = this._getTransferParams(true, forceToken);
+
     return this._getTransferMethod(true, forceToken).estimateGas(options, values);
   }
 
@@ -681,6 +684,7 @@ export default class TransferStore {
   _validatePositiveNumber (num) {
     try {
       const v = new BigNumber(num);
+
       if (v.lt(0)) {
         return ERRORS.invalidAmount;
       }
diff --git a/js/src/modals/Transfer/transfer.js b/js/src/modals/Transfer/transfer.js
index a5b447428..6a406333a 100644
--- a/js/src/modals/Transfer/transfer.js
+++ b/js/src/modals/Transfer/transfer.js
@@ -309,6 +309,7 @@ function mapStateToProps (initState, initProps) {
   return (state) => {
     const { gasLimit } = state.nodeStatus;
     const sendersBalances = senders ? pick(state.balances.balances, Object.keys(senders)) : null;
+
     return { gasLimit, wallet, senders, sendersBalances };
   };
 }
diff --git a/js/src/modals/Verification/GatherData/gatherData.js b/js/src/modals/Verification/GatherData/gatherData.js
index 2afab1344..68de3b6d6 100644
--- a/js/src/modals/Verification/GatherData/gatherData.js
+++ b/js/src/modals/Verification/GatherData/gatherData.js
@@ -233,6 +233,7 @@ export default class GatherData extends Component {
         field.onChange(v);
       };
       const onSubmit = field.onChange;
+
       return (
         <Input
           key={ field.key }
diff --git a/js/src/modals/Verification/email-store.js b/js/src/modals/Verification/email-store.js
index d9e9578cd..b07600fdc 100644
--- a/js/src/modals/Verification/email-store.js
+++ b/js/src/modals/Verification/email-store.js
@@ -76,6 +76,7 @@ export default class EmailVerificationStore extends VerificationStore {
 
   requestCode = () => {
     const { email, account, isTestnet } = this;
+
     return postToServer({ email, address: account }, isTestnet);
   }
 }
diff --git a/js/src/modals/Verification/sms-store.js b/js/src/modals/Verification/sms-store.js
index 13ab69dcd..576dd8c65 100644
--- a/js/src/modals/Verification/sms-store.js
+++ b/js/src/modals/Verification/sms-store.js
@@ -73,6 +73,7 @@ export default class SMSVerificationStore extends VerificationStore {
 
   requestCode = () => {
     const { number, account, isTestnet } = this;
+
     return postToServer({ number, address: account }, isTestnet);
   }
 }
diff --git a/js/src/modals/Verification/store.js b/js/src/modals/Verification/store.js
index 585e9e1bb..5589c8998 100644
--- a/js/src/modals/Verification/store.js
+++ b/js/src/modals/Verification/store.js
@@ -72,6 +72,7 @@ export default class VerificationStore {
 
   @action load = () => {
     const { contract, account } = this;
+
     this.step = LOADING;
 
     const isServerRunning = this.isServerRunning()
@@ -156,6 +157,7 @@ export default class VerificationStore {
     const values = this.requestValues();
 
     let chain = Promise.resolve();
+
     if (!hasRequested) {
       this.step = POSTING_REQUEST;
       chain = request.estimateGas(options, values)
diff --git a/js/src/modals/Verification/verification.js b/js/src/modals/Verification/verification.js
index e6e32d148..0e30bc194 100644
--- a/js/src/modals/Verification/verification.js
+++ b/js/src/modals/Verification/verification.js
@@ -83,7 +83,9 @@ class Verification extends Component {
 
   render () {
     const store = this.store;
-    let phase = 0; let error = false; let isStepValid = true;
+    let phase = 0;
+    let error = false;
+    let isStepValid = true;
 
     if (store) {
       phase = Verification.phases[store.step];
@@ -117,6 +119,7 @@ class Verification extends Component {
         onClick={ onClose }
       />
     );
+
     if (error) {
       return (<div>{ cancel }</div>);
     }
@@ -137,10 +140,12 @@ class Verification extends Component {
     }
 
     let action = () => {};
+
     switch (phase) {
       case 0:
         action = () => {
           const { method } = this.state;
+
           this.onSelectMethod(method);
         };
         break;
@@ -179,13 +184,17 @@ class Verification extends Component {
 
   renderStep (phase, error) {
     if (error) {
-      return (<p>{ error }</p>);
+      return (
+        <p>{ error }</p>
+      );
     }
 
     const { method } = this.state;
+
     if (phase === 0) {
       const values = Object.values(methods);
       const value = values.findIndex((v) => v.value === method);
+
       return (
         <RadioButtons
           onChange={ this.selectMethod }
@@ -209,8 +218,8 @@ class Verification extends Component {
         }
 
         const { setConsentGiven } = this.store;
-
         const fields = [];
+
         if (method === 'sms') {
           fields.push({
             key: 'number',
@@ -249,7 +258,9 @@ class Verification extends Component {
         );
 
       case 3:
-        let receiver, hint;
+        let receiver;
+        let hint;
+
         if (method === 'sms') {
           receiver = this.store.number;
           hint = 'Enter the code you received via SMS.';
@@ -306,5 +317,5 @@ const mapStateToProps = (state) => ({
 
 export default connect(
   mapStateToProps,
-  null // mapDispatchToProps
+  null
 )(Verification);
diff --git a/js/src/modals/WalletSettings/walletSettingsStore.js b/js/src/modals/WalletSettings/walletSettingsStore.js
index 6d70b8de3..2991d55b3 100644
--- a/js/src/modals/WalletSettings/walletSettingsStore.js
+++ b/js/src/modals/WalletSettings/walletSettingsStore.js
@@ -151,11 +151,13 @@ export default class WalletSettingsStore {
 
   @action onNext = () => {
     const stepIndex = this.stepsKeys.findIndex((k) => k === this.step) + 1;
+
     this.step = this.stepsKeys[stepIndex];
   }
 
   @action onChange = (_wallet) => {
     const newWallet = Object.assign({}, this.wallet, _wallet);
+
     this.validateWallet(newWallet);
   }
 
@@ -178,6 +180,7 @@ export default class WalletSettingsStore {
   @action send = () => {
     const changes = this.changes;
     const walletInstance = this.walletInstance;
+
     this.step = 'SENDING';
 
     this.onTransactionsState('postTransaction');
@@ -193,11 +196,13 @@ export default class WalletSettingsStore {
               .pollMethod('parity_checkRequest', id)
               .then((txhash) => {
                 const index = this.requests.findIndex((r) => r.id === id);
+
                 this.requests[index].txhash = txhash;
               })
               .catch((e) => {
                 if (e.code === ERROR_CODES.REQUEST_REJECTED) {
                   const index = this.requests.findIndex((r) => r.id === id);
+
                   this.requests[index].rejected = true;
                   return false;
                 }
diff --git a/js/src/redux/providers/apiReducer.js b/js/src/redux/providers/apiReducer.js
index 294072f58..ee058c3a6 100644
--- a/js/src/redux/providers/apiReducer.js
+++ b/js/src/redux/providers/apiReducer.js
@@ -21,6 +21,7 @@ const initialState = {};
 export default handleActions({
   setApi (state, action) {
     const { api } = action;
+
     return api;
   }
 }, initialState);
diff --git a/js/src/redux/providers/balances.js b/js/src/redux/providers/balances.js
index bb5ed19fa..399e5a521 100644
--- a/js/src/redux/providers/balances.js
+++ b/js/src/redux/providers/balances.js
@@ -73,6 +73,7 @@ export default class Balances {
   static get (store = {}) {
     if (!instance && store) {
       const { api } = store.getState();
+
       return Balances.instantiate(store, api);
     }
 
@@ -340,6 +341,7 @@ export default class Balances {
 
   handleTokensLogs (logs) {
     const tokenIds = logs.map((log) => log.params.id.value.toNumber());
+
     this._store.dispatch(fetchTokens(tokenIds));
   }
 }
diff --git a/js/src/redux/providers/balancesActions.js b/js/src/redux/providers/balancesActions.js
index 4a88bb1be..779ce2a01 100644
--- a/js/src/redux/providers/balancesActions.js
+++ b/js/src/redux/providers/balancesActions.js
@@ -91,6 +91,7 @@ function setBalances (_balances, skipNotifications = false) {
 
           const redirectToAccount = () => {
             const route = `/accounts/${account.address}`;
+
             dispatch(push(route));
           };
 
@@ -168,6 +169,7 @@ export function loadTokens (options = {}) {
       .call()
       .then((numTokens) => {
         const tokenIds = range(numTokens.toNumber());
+
         dispatch(fetchTokens(tokenIds, options));
       })
       .catch((error) => {
@@ -443,6 +445,7 @@ function fetchTokensBalance (address, _tokens, api) {
         }));
 
       const balance = { tokens };
+
       return balance;
     })
     .catch((error) => {
diff --git a/js/src/redux/providers/balancesReducer.js b/js/src/redux/providers/balancesReducer.js
index 52b9bcf1d..bf894a040 100644
--- a/js/src/redux/providers/balancesReducer.js
+++ b/js/src/redux/providers/balancesReducer.js
@@ -26,6 +26,7 @@ const initialState = {
 export default handleActions({
   setBalances (state, action) {
     const { balances } = action;
+
     return Object.assign({}, state, { balances });
   },
 
@@ -57,6 +58,7 @@ export default handleActions({
       }
 
       const tokens = [].concat(balances[address].tokens);
+
       tokens[tokenIndex].token = {
         ...tokens[tokenIndex].token,
         image
@@ -73,11 +75,13 @@ export default handleActions({
 
   setTokenReg (state, action) {
     const { tokenreg } = action;
+
     return Object.assign({}, state, { tokenreg });
   },
 
   setTokensFilter (state, action) {
     const { tokensFilter } = action;
+
     return Object.assign({}, state, { tokensFilter });
   }
 }, initialState);
diff --git a/js/src/redux/providers/certifications/middleware.js b/js/src/redux/providers/certifications/middleware.js
index 498c1cb93..043bfc9e6 100644
--- a/js/src/redux/providers/certifications/middleware.js
+++ b/js/src/redux/providers/certifications/middleware.js
@@ -106,6 +106,7 @@ export default class CertificationsMiddleware {
         logs = contract.parseEventLogs(logs);
         logs.forEach((log) => {
           const certifier = certifiers.find((c) => c.address === log.address);
+
           if (!certifier) {
             throw new Error(`Could not find certifier at ${log.address}.`);
           }
@@ -121,6 +122,7 @@ export default class CertificationsMiddleware {
 
       function onBadgeRegLogs (logs) {
         const ids = logs.map((log) => log.params.id.value.toNumber());
+
         return fetchCertifiers(uniq(ids));
       }
 
@@ -216,6 +218,7 @@ export default class CertificationsMiddleware {
             break;
           case 'setVisibleAccounts':
             const _addresses = action.addresses || [];
+
             addresses = uniq(addresses.concat(_addresses));
             fetchConfirmedEvents();
             next(action);
diff --git a/js/src/redux/providers/certifications/reducer.js b/js/src/redux/providers/certifications/reducer.js
index bb2681cf6..070e70df0 100644
--- a/js/src/redux/providers/certifications/reducer.js
+++ b/js/src/redux/providers/certifications/reducer.js
@@ -28,6 +28,7 @@ export default (state = initialState, action) => {
     const newCertifications = certifications.concat({
       id, name, icon, title
     });
+
     return { ...state, [address]: newCertifications };
   }
 
@@ -36,6 +37,7 @@ export default (state = initialState, action) => {
     const certifications = state[address] || [];
 
     const newCertifications = certifications.filter((c) => c.id !== id);
+
     return { ...state, [address]: newCertifications };
   }
 
diff --git a/js/src/redux/providers/chainMiddleware.spec.js b/js/src/redux/providers/chainMiddleware.spec.js
index 2c0a51602..3d4512859 100644
--- a/js/src/redux/providers/chainMiddleware.spec.js
+++ b/js/src/redux/providers/chainMiddleware.spec.js
@@ -26,6 +26,7 @@ let next;
 let store;
 
 const api = createWsApi();
+
 Contracts.create(api);
 
 function createMiddleware (collection = {}) {
diff --git a/js/src/redux/providers/personalActions.js b/js/src/redux/providers/personalActions.js
index 27cc47c27..2a2c6637f 100644
--- a/js/src/redux/providers/personalActions.js
+++ b/js/src/redux/providers/personalActions.js
@@ -59,6 +59,7 @@ export function personalAccountsInfo (accountsInfo) {
       .values(wallets)
       .map((wallet) => {
         const walletContract = new Contract(api, WalletAbi);
+
         return WalletsUtils.fetchOwners(walletContract.at(wallet.address));
       });
 
diff --git a/js/src/redux/providers/registry/middleware.js b/js/src/redux/providers/registry/middleware.js
index da05c33df..79aef70a9 100644
--- a/js/src/redux/providers/registry/middleware.js
+++ b/js/src/redux/providers/registry/middleware.js
@@ -45,7 +45,10 @@ const write = debounce((getChain, getReverses, getLastBlock) => {
 }, 20000);
 
 export default (api) => (store) => {
-  let contract, subscription, timeout, interval;
+  let contract;
+  let subscription;
+  let timeout;
+  let interval;
 
   let addressesToCheck = {};
 
@@ -85,10 +88,11 @@ export default (api) => (store) => {
         store.dispatch(startCachingReverses());
 
         break;
+
       case 'startCachingReverses':
         const { registry } = Contracts.get();
-
         const cached = read(store.getState().nodeStatus.netChain);
+
         if (cached) {
           Object
             .entries(cached.reverses)
diff --git a/js/src/redux/providers/signerMiddleware.js b/js/src/redux/providers/signerMiddleware.js
index ba51d3426..fb5ab783c 100644
--- a/js/src/redux/providers/signerMiddleware.js
+++ b/js/src/redux/providers/signerMiddleware.js
@@ -90,6 +90,7 @@ export default class SignerMiddleware {
           })
           .then((result) => {
             const seed = Buffer.from(result.data);
+
             return new Signer(seed);
           })
         : Signer.fromJson(wallet, password);
diff --git a/js/src/redux/providers/signerReducer.js b/js/src/redux/providers/signerReducer.js
index 835fe8a70..3851a1a94 100644
--- a/js/src/redux/providers/signerReducer.js
+++ b/js/src/redux/providers/signerReducer.js
@@ -93,6 +93,7 @@ export default handleActions({
       state.pending.find(p => p.id === id) || { id },
       { status: 'rejected' }
     );
+
     return {
       ...state,
       pending: removeWithId(state.pending, id),
diff --git a/js/src/redux/providers/status.js b/js/src/redux/providers/status.js
index 8456f2d9a..53efbb9ce 100644
--- a/js/src/redux/providers/status.js
+++ b/js/src/redux/providers/status.js
@@ -95,6 +95,7 @@ export default class Status {
     });
 
     const promise = BalancesProvider.stop();
+
     promises.push(promise);
 
     return Promise.all(promises)
@@ -108,6 +109,7 @@ export default class Status {
 
   updateApiStatus () {
     const apiStatus = this.getApiStatus();
+
     log.debug('status::updateApiStatus', apiStatus);
 
     if (!isEqual(apiStatus, this._apiStatus)) {
diff --git a/js/src/redux/providers/statusReducer.js b/js/src/redux/providers/statusReducer.js
index 4bef27b1b..e6f554391 100644
--- a/js/src/redux/providers/statusReducer.js
+++ b/js/src/redux/providers/statusReducer.js
@@ -80,6 +80,7 @@ export default handleActions({
 
   toggleStatusRefresh (state, action) {
     const { refreshStatus } = action;
+
     return Object.assign({}, state, { refreshStatus });
   }
 }, initialState);
diff --git a/js/src/redux/providers/walletActions.js b/js/src/redux/providers/walletActions.js
index 6bae2b3b5..20f7d9b65 100644
--- a/js/src/redux/providers/walletActions.js
+++ b/js/src/redux/providers/walletActions.js
@@ -182,6 +182,7 @@ function fetchWalletsInfo (updates) {
     Promise
       .all(_updates.map((update) => {
         const contract = new Contract(api, WALLET_ABI).at(update.address);
+
         return fetchWalletInfo(contract, update, getState);
       }))
       .then((updates) => {
@@ -415,6 +416,7 @@ function fetchOperationConfirmations (contract, operation, owners = null) {
   return promise
     .then((result) => {
       const owners = result.value;
+
       return Promise
         .all(owners.map((owner) => walletInstance.hasConfirmed.call({}, [ operation, owner ])))
         .then((data) => {
diff --git a/js/src/redux/providers/worker.js b/js/src/redux/providers/worker.js
index 35ca0f173..9f8f37293 100644
--- a/js/src/redux/providers/worker.js
+++ b/js/src/redux/providers/worker.js
@@ -27,6 +27,7 @@ function getWorker () {
       .then(() => navigator.serviceWorker.ready)
       .then((registration) => {
         const worker = registration.active;
+
         worker.controller = registration.active;
 
         return new PromiseWorker(worker);
diff --git a/js/src/redux/providers/workerReducer.js b/js/src/redux/providers/workerReducer.js
index 27144e11b..adb3422af 100644
--- a/js/src/redux/providers/workerReducer.js
+++ b/js/src/redux/providers/workerReducer.js
@@ -24,11 +24,13 @@ const initialState = {
 export default handleActions({
   setWorker (state, action) {
     const { worker } = action;
+
     return Object.assign({}, state, { worker: worker || null });
   },
 
   setError (state, action) {
     const { error } = action;
+
     return Object.assign({}, state, { error });
   }
 }, initialState);
diff --git a/js/src/secureApi.js b/js/src/secureApi.js
index 8ee0d5196..676c455ed 100644
--- a/js/src/secureApi.js
+++ b/js/src/secureApi.js
@@ -113,6 +113,7 @@ export default class SecureApi extends Api {
 
         if (connected) {
           const token = this.secureToken;
+
           log.debug('got connected ; saving token', token);
 
           // Save the sucessful token
@@ -145,6 +146,7 @@ export default class SecureApi extends Api {
    */
   isNodeUp () {
     const url = this._url.replace(/wss?/, 'http');
+
     return fetch(url, { method: 'HEAD' })
       .then(
         (r) => r.status === 200,
@@ -159,6 +161,7 @@ export default class SecureApi extends Api {
    */
   updateToken (_token) {
     const token = this._sanitiseToken(_token);
+
     log.debug('updating token', token);
 
     // Update the tokens list: put the new one on first position
@@ -298,6 +301,7 @@ export default class SecureApi extends Api {
     }
 
     const nextToken = this._tokens[nextTokenIndex];
+
     return nextToken;
   }
 
diff --git a/js/src/serviceWorker.js b/js/src/serviceWorker.js
index 3fdfc02ac..a74be41c0 100644
--- a/js/src/serviceWorker.js
+++ b/js/src/serviceWorker.js
@@ -106,6 +106,7 @@ function handleMessage (message) {
 function getSignerSeed (data) {
   console.log('deriving seed from service-worker');
   const { wallet, password } = data;
+
   return Signer.getSeed(wallet, password);
 }
 
@@ -138,6 +139,7 @@ function getCompiler (build) {
 
   const fetcher = (url) => {
     const request = new Request(url);
+
     return cachedFetcher(request);
   };
 
diff --git a/js/src/ui/AccountCard/accountCard.js b/js/src/ui/AccountCard/accountCard.js
index 08c2f009b..f22af5e45 100644
--- a/js/src/ui/AccountCard/accountCard.js
+++ b/js/src/ui/AccountCard/accountCard.js
@@ -157,6 +157,7 @@ export default class AccountCard extends Component {
         // @see https://developers.google.com/web/updates/2015/04/cut-and-copy-commands
         try {
           const range = document.createRange();
+
           range.selectNode(element);
           window.getSelection().addRange(range);
           document.execCommand('copy');
@@ -183,11 +184,13 @@ export default class AccountCard extends Component {
 
   onClick = () => {
     const { account, onClick } = this.props;
+
     onClick(account.address);
   }
 
   onFocus = () => {
     const { account, onFocus } = this.props;
+
     onFocus(account.index);
   }
 
diff --git a/js/src/ui/Actionbar/Export/export.js b/js/src/ui/Actionbar/Export/export.js
index d3cb4bd17..d107f3d3e 100644
--- a/js/src/ui/Actionbar/Export/export.js
+++ b/js/src/ui/Actionbar/Export/export.js
@@ -50,6 +50,7 @@ class ActionbarExport extends Component {
     const text = JSON.stringify(content, null, 4);
 
     const blob = new Blob([ text ], { type: 'application/json' });
+
     FileSaver.saveAs(blob, `${filename}.json`);
   }
 }
diff --git a/js/src/ui/Actionbar/Sort/sortStore.js b/js/src/ui/Actionbar/Sort/sortStore.js
index 84084c4b7..68c1eabf1 100644
--- a/js/src/ui/Actionbar/Sort/sortStore.js
+++ b/js/src/ui/Actionbar/Sort/sortStore.js
@@ -39,12 +39,14 @@ export default class SortStore {
 
   @action handleSortChange = (event, child) => {
     const order = child.props.value;
+
     this.onChange(order);
     this.saveOrder(order);
   }
 
   @action restoreSavedOrder = () => {
     const order = this.getSavedOrder();
+
     this.onChange(order);
   }
 
diff --git a/js/src/ui/Balance/balance.js b/js/src/ui/Balance/balance.js
index c1a1fad7c..db2a32f8c 100644
--- a/js/src/ui/Balance/balance.js
+++ b/js/src/ui/Balance/balance.js
@@ -45,10 +45,12 @@ class Balance extends Component {
         const token = balance.token;
 
         let value;
+
         if (token.format) {
           const bnf = new BigNumber(token.format);
 
           let decimals = 0;
+
           if (bnf.gte(1000)) {
             decimals = 3;
           } else if (bnf.gte(100)) {
diff --git a/js/src/ui/Certifications/certifications.js b/js/src/ui/Certifications/certifications.js
index 5604ab90a..3160b5182 100644
--- a/js/src/ui/Certifications/certifications.js
+++ b/js/src/ui/Certifications/certifications.js
@@ -50,6 +50,7 @@ class Certifications extends Component {
 
     const classNames = `${styles.certification} ${!icon ? styles.noIcon : ''}`;
     const img = icon ? dappsUrl + hashToImageUrl(icon) : defaultIcon;
+
     return (
       <div className={ classNames } key={ name }>
         <img className={ styles.icon } src={ img } />
diff --git a/js/src/ui/Form/AddressSelect/addressSelect.js b/js/src/ui/Form/AddressSelect/addressSelect.js
index 6a71e4245..1094eb16f 100644
--- a/js/src/ui/Form/AddressSelect/addressSelect.js
+++ b/js/src/ui/Form/AddressSelect/addressSelect.js
@@ -256,6 +256,7 @@ class AddressSelect extends Component {
     const accounts = registryValues
       .map((registryValue, index) => {
         const account = { ...registryValue, index: `${registryValue.address}_${index}` };
+
         return this.renderAccountCard(account);
       });
 
@@ -366,6 +367,7 @@ class AddressSelect extends Component {
     // If only one value, select it
     if (values.reduce((cur, cat) => cur + cat.values.length, 0) === 1) {
       const value = values.find((cat) => cat.values.length > 0).values[0];
+
       return this.handleClick(value.address);
     }
   }
@@ -389,6 +391,7 @@ class AddressSelect extends Component {
     switch (codeName) {
       case 'enter':
         const index = this.state.focusedItem;
+
         if (!index) {
           return this.validateCustomInput();
         }
@@ -460,6 +463,7 @@ class AddressSelect extends Component {
 
       const nextValues = values[nextCat];
       const nextFocus = nextValues ? nextValues.values[0] : null;
+
       return this.focusItem(nextFocus && nextFocus.index || 1);
     }
 
@@ -477,6 +481,7 @@ class AddressSelect extends Component {
     // If down: increase index if possible
     if (direction === 'down') {
       const prevN = values[prevCategoryIndex].values.length;
+
       nextFocusIndex = Math.min(prevFocusIndex + 1, prevN - 1);
     }
 
@@ -516,6 +521,7 @@ class AddressSelect extends Component {
     }
 
     const nextFocus = values[nextCategory].values[nextFocusIndex].index;
+
     return this.focusItem(nextFocus);
   }
 
diff --git a/js/src/ui/Form/AddressSelect/addressSelectStore.js b/js/src/ui/Form/AddressSelect/addressSelectStore.js
index 0b8b2adfc..599c79322 100644
--- a/js/src/ui/Form/AddressSelect/addressSelectStore.js
+++ b/js/src/ui/Form/AddressSelect/addressSelectStore.js
@@ -46,6 +46,7 @@ export default class AddressSelectStore {
           .keys(this.reverse)
           .find((addr) => {
             const name = this.reverse[addr];
+
             return startsWithQuery(addr) || (name && startsWithQuery(name));
           });
 
@@ -156,6 +157,7 @@ export default class AddressSelectStore {
 
   @action setValues (props) {
     const { accounts = {}, contracts = {}, contacts = {}, reverse = {} } = props;
+
     this.reverse = reverse;
 
     const accountsN = Object.keys(accounts).length;
@@ -295,6 +297,7 @@ export default class AddressSelectStore {
         }
 
         const tags = (meta.tags || []).join('');
+
         return tags.includes(filter);
       })
       .sort((accA, accB) => {
diff --git a/js/src/ui/Form/AutoComplete/autocomplete.js b/js/src/ui/Form/AutoComplete/autocomplete.js
index aaab0b55c..d5301e7e9 100644
--- a/js/src/ui/Form/AutoComplete/autocomplete.js
+++ b/js/src/ui/Form/AutoComplete/autocomplete.js
@@ -71,6 +71,7 @@ export default class AutoComplete extends Component {
 
   componentWillMount () {
     const dataSource = this.getDataSource();
+
     this.setState({ dataSource });
   }
 
@@ -80,6 +81,7 @@ export default class AutoComplete extends Component {
 
     if (!isEqual(prevEntries, nextEntries)) {
       const dataSource = this.getDataSource(nextProps);
+
       this.setState({ dataSource });
     }
   }
@@ -152,6 +154,7 @@ export default class AutoComplete extends Component {
 
         // Add the item class to the entry
         const classNames = [ styles.item ].concat(item.value.props.className);
+
         item.value = React.cloneElement(item.value, { className: classNames.join(' ') });
       } else {
         item = {
@@ -205,6 +208,7 @@ export default class AutoComplete extends Component {
     switch (keycode(event)) {
       case 'down':
         const { menu } = muiAutocomplete.refs;
+
         menu && menu.handleKeyDown(event);
         break;
 
@@ -215,6 +219,7 @@ export default class AutoComplete extends Component {
         event.which = 'useless';
 
         const e = new CustomEvent('down');
+
         e.which = 40;
 
         muiAutocomplete && muiAutocomplete.handleKeyDown(e);
@@ -239,6 +244,7 @@ export default class AutoComplete extends Component {
 
     if (!onUpdateInput) {
       const { entry } = this.state;
+
       this.handleOnChange(entry);
     }
   }
diff --git a/js/src/ui/Form/InputAddress/inputAddress.js b/js/src/ui/Form/InputAddress/inputAddress.js
index abdf04dbe..9cbcb379b 100644
--- a/js/src/ui/Form/InputAddress/inputAddress.js
+++ b/js/src/ui/Form/InputAddress/inputAddress.js
@@ -59,12 +59,10 @@ class InputAddress extends Component {
     const { accountsInfo, allowCopy, className, disabled, error, focused, hint } = this.props;
     const { hideUnderline, label, onClick, onFocus, readOnly, small } = this.props;
     const { tabIndex, text, tokens, value } = this.props;
-
     const account = value && (accountsInfo[value] || tokens[value]);
-
     const icon = this.renderIcon();
-
     const classes = [ className ];
+
     classes.push(!icon ? styles.inputEmpty : styles.input);
 
     const containerClasses = [ styles.container ];
diff --git a/js/src/ui/Form/InputChip/inputChip.js b/js/src/ui/Form/InputChip/inputChip.js
index 5165e5727..c6a7d3dfc 100644
--- a/js/src/ui/Form/InputChip/inputChip.js
+++ b/js/src/ui/Form/InputChip/inputChip.js
@@ -139,6 +139,7 @@ export default class InputChip extends Component {
 
     if (addOnBlur) {
       const { inputValue } = this.refs.chipInput.state;
+
       this.handleTokenAdd(inputValue);
     }
 
@@ -190,6 +191,7 @@ export default class InputChip extends Component {
 
     if (splitTokens.length > 1) {
       const tokensToAdd = splitTokens.slice(0, -1);
+
       tokensToAdd.forEach(token => this.handleTokenAdd(token));
     }
 
diff --git a/js/src/ui/Form/PasswordStrength/passwordStrength.js b/js/src/ui/Form/PasswordStrength/passwordStrength.js
index 6bfe681b9..b128902f3 100644
--- a/js/src/ui/Form/PasswordStrength/passwordStrength.js
+++ b/js/src/ui/Form/PasswordStrength/passwordStrength.js
@@ -55,6 +55,7 @@ export default class PasswordStrength extends Component {
 
   _updateStrength (input = '') {
     const strength = zxcvbn(input);
+
     this.setState({ strength });
   }
 
diff --git a/js/src/ui/Form/TypedInput/typedInput.js b/js/src/ui/Form/TypedInput/typedInput.js
index 9c7d84921..241e93de9 100644
--- a/js/src/ui/Form/TypedInput/typedInput.js
+++ b/js/src/ui/Form/TypedInput/typedInput.js
@@ -73,6 +73,7 @@ export default class TypedInput extends Component {
       // Remove formatting commas
       const sanitizedValue = typeof value === 'string' ? value.replace(/,/g, '') : value;
       const ethValue = isEth ? fromWei(sanitizedValue) : value;
+
       this.setState({ isEth, ethValue });
     }
   }
@@ -101,6 +102,7 @@ export default class TypedInput extends Component {
       const inputs = range(length || value.length).map((_, index) => {
         const onChange = (inputValue) => {
           const newValues = [].concat(this.props.value);
+
           newValues[index] = inputValue;
           this.props.onChange(newValues);
         };
@@ -399,6 +401,7 @@ export default class TypedInput extends Component {
     // Remove formatting commas
     const sanitizedValue = typeof ethValue === 'string' ? ethValue.replace(/,/g, '') : ethValue;
     const value = isEth ? toWei(sanitizedValue) : fromWei(sanitizedValue);
+
     this.setState({ isEth: !isEth, ethValue: value }, () => {
       this.onEthValueChange(null, value);
     });
diff --git a/js/src/ui/GasPriceSelector/CustomCursor/customCursor.js b/js/src/ui/GasPriceSelector/CustomCursor/customCursor.js
index 48f22f38a..8c2da0336 100644
--- a/js/src/ui/GasPriceSelector/CustomCursor/customCursor.js
+++ b/js/src/ui/GasPriceSelector/CustomCursor/customCursor.js
@@ -68,6 +68,7 @@ export default class CustomCursor extends Component {
   onClick = () => {
     const { onClick, getIndex } = this.props;
     const index = getIndex();
+
     onClick({ index });
   }
 }
diff --git a/js/src/ui/GasPriceSelector/gasPriceSelector.js b/js/src/ui/GasPriceSelector/gasPriceSelector.js
index 5fea423c3..2ba911e9c 100644
--- a/js/src/ui/GasPriceSelector/gasPriceSelector.js
+++ b/js/src/ui/GasPriceSelector/gasPriceSelector.js
@@ -297,6 +297,7 @@ export default class GasPriceSelector extends Component {
       .toNumber();
 
     const sliderValue = (startIndex + sliderValueDec) / (prices.length - 1);
+
     this.setSliderValue(sliderValue, bnprice);
   }
 
@@ -333,6 +334,7 @@ export default class GasPriceSelector extends Component {
 
     if (priceBIdx === N + 1) {
       const price = prices[priceAIdx].round();
+
       this.props.onChange(event, price);
       return;
     }
diff --git a/js/src/ui/GasPriceSelector/util.js b/js/src/ui/GasPriceSelector/util.js
index a3d2233c1..557e88232 100644
--- a/js/src/ui/GasPriceSelector/util.js
+++ b/js/src/ui/GasPriceSelector/util.js
@@ -25,6 +25,7 @@ const COLORS = {
 
 const countModifier = (count) => {
   const val = count.toNumber ? count.toNumber() : count;
+
   return Math.log10(val + 1) + 0.1;
 };
 
diff --git a/js/src/ui/IdentityIcon/identityIcon.js b/js/src/ui/IdentityIcon/identityIcon.js
index 7e848e444..9d6b1c605 100644
--- a/js/src/ui/IdentityIcon/identityIcon.js
+++ b/js/src/ui/IdentityIcon/identityIcon.js
@@ -68,6 +68,7 @@ class IdentityIcon extends Component {
     }
 
     let scale = 7;
+
     if (tiny) {
       scale = 2;
     } else if (button) {
@@ -95,6 +96,7 @@ class IdentityIcon extends Component {
     ].join(' ');
 
     let size = '56px';
+
     if (tiny) {
       size = '16px';
     } else if (button) {
diff --git a/js/src/ui/MethodDecoding/methodDecoding.js b/js/src/ui/MethodDecoding/methodDecoding.js
index 08ce02dcc..2fec965f8 100644
--- a/js/src/ui/MethodDecoding/methodDecoding.js
+++ b/js/src/ui/MethodDecoding/methodDecoding.js
@@ -461,6 +461,7 @@ class MethodDecoding extends Component {
     }
 
     const ascii = this.getAscii();
+
     return this.setState({
       inputType: ascii.valid ? 'raw' : 'ascii'
     });
diff --git a/js/src/ui/MethodDecoding/methodDecodingStore.js b/js/src/ui/MethodDecoding/methodDecodingStore.js
index 31fe60290..c49bf7db4 100644
--- a/js/src/ui/MethodDecoding/methodDecodingStore.js
+++ b/js/src/ui/MethodDecoding/methodDecodingStore.js
@@ -65,6 +65,7 @@ export default class MethodDecodingStore {
       .map((f) => ({ sign: f.signature, abi: f.abi }))
       .forEach((mapping) => {
         const sign = (/^0x/.test(mapping.sign) ? '' : '0x') + mapping.sign;
+
         this._methods[sign] = mapping.abi;
       });
   }
@@ -131,6 +132,7 @@ export default class MethodDecodingStore {
 
     try {
       const decodeCallDataResult = this.api.util.decodeCallData(input);
+
       signature = decodeCallDataResult.signature;
     } catch (e) {}
 
@@ -149,6 +151,7 @@ export default class MethodDecodingStore {
         }
 
         const { signature, paramdata } = this.api.util.decodeCallData(input);
+
         result.signature = signature;
         result.params = paramdata;
 
@@ -164,6 +167,7 @@ export default class MethodDecodingStore {
                 .decodeMethodInput(abi, paramdata)
                 .map((value, index) => {
                   const { name, type } = abi.inputs[index];
+
                   return { name, type, value };
                 });
             }
@@ -234,6 +238,7 @@ export default class MethodDecodingStore {
           result.inputs = decodedInputs
             .map((value, index) => {
               const type = constructorAbi.inputs[index].kind.type;
+
               return { type, value };
             });
         }
diff --git a/js/src/ui/ParityBackground/parityBackground.js b/js/src/ui/ParityBackground/parityBackground.js
index cab3f31d3..33465e6c0 100644
--- a/js/src/ui/ParityBackground/parityBackground.js
+++ b/js/src/ui/ParityBackground/parityBackground.js
@@ -65,6 +65,7 @@ class ParityBackground extends Component {
     const { muiTheme } = this.context;
 
     const style = muiTheme.parity.getBackgroundStyle(gradient, _seed);
+
     this.setState({ style });
   }
 
@@ -90,6 +91,7 @@ class ParityBackground extends Component {
 
 function mapStateToProps (state) {
   const { backgroundSeed } = state.settings;
+
   return { backgroundSeed };
 }
 
diff --git a/js/src/ui/ShortenedHash/shortenedHash.js b/js/src/ui/ShortenedHash/shortenedHash.js
index 7008304f8..951210eb6 100644
--- a/js/src/ui/ShortenedHash/shortenedHash.js
+++ b/js/src/ui/ShortenedHash/shortenedHash.js
@@ -27,6 +27,7 @@ export default class ShortenedHash extends Component {
     const { data } = this.props;
 
     let shortened = data.toLowerCase();
+
     if (shortened.slice(0, 2) === '0x') {
       shortened = shortened.slice(2);
     }
diff --git a/js/src/ui/Tooltips/tooltips.js b/js/src/ui/Tooltips/tooltips.js
index 1fdc15486..08271d016 100644
--- a/js/src/ui/Tooltips/tooltips.js
+++ b/js/src/ui/Tooltips/tooltips.js
@@ -51,6 +51,7 @@ class Tooltips extends Component {
 
     if (currentId !== undefined && currentId !== -1) {
       const viewLink = '/accounts/';
+
       this.context.router.push(viewLink);
     }
   }
diff --git a/js/src/ui/TxHash/txHash.js b/js/src/ui/TxHash/txHash.js
index 68d426f44..e5b056c69 100644
--- a/js/src/ui/TxHash/txHash.js
+++ b/js/src/ui/TxHash/txHash.js
@@ -113,6 +113,7 @@ class TxHash extends Component {
     const value = Math.min(confirmations.toNumber(), maxConfirmations);
 
     let count = confirmations.toFormat(0);
+
     if (confirmations.lte(maxConfirmations)) {
       count = `${count}/${maxConfirmations}`;
     }
diff --git a/js/src/ui/TxHash/txHash.spec.js b/js/src/ui/TxHash/txHash.spec.js
index af8689c7f..3c2ba1573 100644
--- a/js/src/ui/TxHash/txHash.spec.js
+++ b/js/src/ui/TxHash/txHash.spec.js
@@ -76,6 +76,7 @@ function render (props) {
     />,
     { context: { store: createRedux() } }
   );
+
   component = baseComponent.find('TxHash').shallow({ context: { api: createApi() } });
   instance = component.instance();
 
diff --git a/js/src/ui/TxList/TxRow/txRow.js b/js/src/ui/TxList/TxRow/txRow.js
index 1a836d571..0969149f2 100644
--- a/js/src/ui/TxList/TxRow/txRow.js
+++ b/js/src/ui/TxList/TxRow/txRow.js
@@ -80,6 +80,7 @@ export default class TxRow extends Component {
     const { isTest } = this.props;
 
     let esLink = null;
+
     if (address) {
       esLink = (
         <a
diff --git a/js/src/util/dapps.js b/js/src/util/dapps.js
index 89f17274e..cfad05b1b 100644
--- a/js/src/util/dapps.js
+++ b/js/src/util/dapps.js
@@ -70,6 +70,7 @@ export function subscribeToChanges (api, dappReg, callback) {
 
                   // Return uniq IDs which changed meta-data
                   const ids = uniq(events.map((event) => bytesToHex(event.params.id.value)));
+
                   callback(ids);
                 });
             }
@@ -129,6 +130,7 @@ export function fetchRegistryAppIds () {
     .count()
     .then((count) => {
       const promises = range(0, count.toNumber()).map((index) => dappReg.at(index));
+
       return Promise.all(promises);
     })
     .then((appsInfo) => {
@@ -177,6 +179,7 @@ export function fetchRegistryApp (api, dappReg, appId) {
     .then((app) => {
       // Keep dapps that has a Manifest File and an Id
       const dapp = (app.manifestHash || !app.id) ? null : app;
+
       return dapp;
     })
     .catch((error) => {
diff --git a/js/src/util/signer.js b/js/src/util/signer.js
index 3adee7672..b80034ac2 100644
--- a/js/src/util/signer.js
+++ b/js/src/util/signer.js
@@ -36,6 +36,7 @@ export class Signer {
   static getSeed (json, password) {
     try {
       const seed = Signer.getSyncSeed(json, password);
+
       return Promise.resolve(seed);
     } catch (error) {
       return Promise.reject(error);
@@ -82,6 +83,7 @@ export class Signer {
 
     while (seed.length < 32) {
       const nullBuff = Buffer.from([0x00]);
+
       seed = Buffer.concat([nullBuff, seed]);
     }
 
@@ -94,6 +96,7 @@ export class Signer {
 
   signTransaction (transaction) {
     const tx = new Transaction(transaction);
+
     tx.sign(this.seed);
     return inHex(tx.serialize().toString('hex'));
   }
diff --git a/js/src/util/solidity.js b/js/src/util/solidity.js
index 89463215d..1325917d1 100644
--- a/js/src/util/solidity.js
+++ b/js/src/util/solidity.js
@@ -21,6 +21,7 @@ export default class SolidityUtils {
     const { sourcecode, build, optimize, files } = data;
 
     const start = Date.now();
+
     console.log('[solidity] compiling...');
 
     const input = {
@@ -40,6 +41,7 @@ export default class SolidityUtils {
     const compiled = compiler.compile({ sources: input }, optimize ? 1 : 0, findFiles);
 
     const time = Math.round((Date.now() - start) / 100) / 10;
+
     console.log(`[solidity] done compiling in ${time}s`);
 
     compiled.version = build.longVersion;
@@ -64,6 +66,7 @@ export default class SolidityUtils {
       .then((code) => {
         // `window` for main thread, `self` for workers
         const _self = isWorker ? self : window;
+
         _self.Module = {};
 
         const solcCode = code.replace('var Module;', `var Module=${isWorker ? 'self' : 'window'}.Module;`);
@@ -80,6 +83,7 @@ export default class SolidityUtils {
         console.log(`[solidity] done evaluating ${longVersion}`);
 
         const compiler = solc(_self.Module);
+
         delete _self.Module;
 
         return compiler;
diff --git a/js/src/util/subscribe-to-events.js b/js/src/util/subscribe-to-events.js
index 48c990277..8bf19332a 100644
--- a/js/src/util/subscribe-to-events.js
+++ b/js/src/util/subscribe-to-events.js
@@ -25,6 +25,7 @@ const defaults = {
 
 const subscribeToEvents = (contract, events, opt = {}) => {
   const { api } = contract;
+
   opt = Object.assign({}, defaults, opt);
 
   let filter = null;
@@ -48,6 +49,7 @@ const subscribeToEvents = (contract, events, opt = {}) => {
   };
 
   const emitter = new EventEmitter();
+
   emitter.unsubscribe = unsubscribe;
 
   const fetcher = (method, filterId) => () => {
@@ -82,6 +84,7 @@ const subscribeToEvents = (contract, events, opt = {}) => {
       fetcher('getFilterLogs', filterId)(); // fetch immediately
 
       const fetchChanges = fetcher('getFilterChanges', filterId);
+
       interval = setInterval(fetchChanges, opt.interval);
 
       return filterId;
diff --git a/js/src/util/subscribe-to-events.spec.js b/js/src/util/subscribe-to-events.spec.js
index 06e934b2d..d891d875e 100644
--- a/js/src/util/subscribe-to-events.spec.js
+++ b/js/src/util/subscribe-to-events.spec.js
@@ -67,6 +67,7 @@ describe('util/subscribe-to-events', () => {
     const onLog = spy();
     const onFoo = spy();
     const onBar = spy();
+
     subscribeToEvents(contract, [ 'Foo', 'Bar' ])
       .on('log', onLog)
       .on('Foo', onFoo)
@@ -87,6 +88,7 @@ describe('util/subscribe-to-events', () => {
     const { api, contract } = this;
 
     const s = subscribeToEvents(contract, [ 'Foo', 'Bar' ]);
+
     await delay(0);
     s.unsubscribe();
     await delay(0);
@@ -97,10 +99,12 @@ describe('util/subscribe-to-events', () => {
 
   it('checks for new events regularly', async function () {
     const { api, contract } = this;
+
     api.eth.getFilterLogs = stub().resolves([]);
 
     const onLog = spy();
     const onBar = spy();
+
     subscribeToEvents(contract, [ 'Bar' ], { interval: 5 })
       .on('log', onLog)
       .on('Bar', onBar);
diff --git a/js/src/util/tx.js b/js/src/util/tx.js
index 90c78a42d..a7fc361dd 100644
--- a/js/src/util/tx.js
+++ b/js/src/util/tx.js
@@ -59,6 +59,7 @@ export function estimateGas (_func, _options, _values = []) {
   return getTxArgs(_func, _options, _values)
     .then((callArgs) => {
       const { func, options, values } = callArgs;
+
       return func._estimateGas(options, values);
     })
     .then((gas) => {
@@ -78,6 +79,7 @@ export function postTransaction (_func, _options, _values = []) {
   return getTxArgs(_func, _options, _values)
     .then((callArgs) => {
       const { func, options, values } = callArgs;
+
       return func._postTransaction(options, values);
     });
 }
@@ -117,6 +119,7 @@ export function waitForConfirmations (api, tx, confirmations) {
     api.pollMethod('eth_getTransactionReceipt', tx, isValidReceipt)
     .then((receipt) => {
       let subscription;
+
       api.subscribe('eth_blockNumber', (err, block) => {
         if (err) {
           reject(err);
diff --git a/js/src/views/Accounts/List/list.js b/js/src/views/Accounts/List/list.js
index ce7a2ae99..2311ae090 100644
--- a/js/src/views/Accounts/List/list.js
+++ b/js/src/views/Accounts/List/list.js
@@ -50,6 +50,7 @@ class List extends Component {
 
   componentWillMount () {
     const { accounts, fetchCertifiers, fetchCertifications } = this.props;
+
     fetchCertifiers();
     for (let address in accounts) {
       fetchCertifications(address);
@@ -105,6 +106,7 @@ class List extends Component {
 
   getAddresses () {
     const filteredAddresses = this.getFilteredAddresses();
+
     return this.sortAddresses(filteredAddresses);
   }
 
@@ -257,6 +259,7 @@ class List extends Component {
 
 function mapStateToProps (state) {
   const { certifications } = state;
+
   return { certifications };
 }
 
diff --git a/js/src/views/Accounts/Summary/summary.js b/js/src/views/Accounts/Summary/summary.js
index 20924dc4a..8849458b6 100644
--- a/js/src/views/Accounts/Summary/summary.js
+++ b/js/src/views/Accounts/Summary/summary.js
@@ -221,6 +221,7 @@ export default class Summary extends Component {
 
   renderCertifications () {
     const { showCertifications, account } = this.props;
+
     if (!showCertifications) {
       return null;
     }
diff --git a/js/src/views/Accounts/accounts.js b/js/src/views/Accounts/accounts.js
index df9fc5947..ebc2b6355 100644
--- a/js/src/views/Accounts/accounts.js
+++ b/js/src/views/Accounts/accounts.js
@@ -74,6 +74,7 @@ class Accounts extends Component {
   setVisibleAccounts (props = this.props) {
     const { accounts, setVisibleAccounts } = props;
     const addresses = Object.keys(accounts);
+
     setVisibleAccounts(addresses);
   }
 
@@ -269,6 +270,7 @@ class Accounts extends Component {
   onAddSearchToken = (token) => {
     const { searchTokens } = this.state;
     const newSearchTokens = uniq([].concat(searchTokens, token));
+
     this.setState({ searchTokens: newSearchTokens });
   }
 
diff --git a/js/src/views/Address/address.js b/js/src/views/Address/address.js
index 79c591b14..6a2894e64 100644
--- a/js/src/views/Address/address.js
+++ b/js/src/views/Address/address.js
@@ -69,6 +69,7 @@ class Address extends Component {
   setVisibleAccounts (props = this.props) {
     const { params, setVisibleAccounts } = props;
     const addresses = [ params.address ];
+
     setVisibleAccounts(addresses);
   }
 
diff --git a/js/src/views/Addresses/addresses.js b/js/src/views/Addresses/addresses.js
index 8f22e97ce..10ffdd2d2 100644
--- a/js/src/views/Addresses/addresses.js
+++ b/js/src/views/Addresses/addresses.js
@@ -68,6 +68,7 @@ class Addresses extends Component {
   setVisibleAccounts (props = this.props) {
     const { contacts, setVisibleAccounts } = props;
     const addresses = Object.keys(contacts);
+
     setVisibleAccounts(addresses);
   }
 
@@ -247,6 +248,7 @@ class Addresses extends Component {
   onAddSearchToken = (token) => {
     const { searchTokens } = this.state;
     const newSearchTokens = uniq([].concat(searchTokens, token));
+
     this.setState({ searchTokens: newSearchTokens });
   }
 
diff --git a/js/src/views/Application/Snackbar/snackbar.js b/js/src/views/Application/Snackbar/snackbar.js
index 5f105db14..1af18dd2b 100644
--- a/js/src/views/Application/Snackbar/snackbar.js
+++ b/js/src/views/Application/Snackbar/snackbar.js
@@ -60,6 +60,7 @@ class Snackbar extends Component {
 
 function mapStateToProps (state) {
   const { open, message, cooldown } = state.snackbar;
+
   return { open, message, cooldown };
 }
 
diff --git a/js/src/views/Contract/Events/Event/event.js b/js/src/views/Contract/Events/Event/event.js
index 83a3998b7..af8e38258 100644
--- a/js/src/views/Contract/Events/Event/event.js
+++ b/js/src/views/Contract/Events/Event/event.js
@@ -118,6 +118,7 @@ export default class Event extends Component {
 
       default:
         let value;
+
         if (api.util.isInstanceOf(param.value, BigNumber)) {
           value = param.value.toFormat(0);
         } else if (api.util.isArray(param.value)) {
diff --git a/js/src/views/Contract/contract.js b/js/src/views/Contract/contract.js
index 91f1436bb..41cf612e3 100644
--- a/js/src/views/Contract/contract.js
+++ b/js/src/views/Contract/contract.js
@@ -115,6 +115,7 @@ class Contract extends Component {
   setVisibleAccounts (props = this.props) {
     const { params, setVisibleAccounts } = props;
     const addresses = [ params.address ];
+
     setVisibleAccounts(addresses);
   }
 
@@ -335,6 +336,7 @@ class Contract extends Component {
       .then(results => {
         const values = queries.reduce((object, fn, idx) => {
           const key = fn.name;
+
           object[key] = results[idx];
           return object;
         }, {});
@@ -451,6 +453,7 @@ class Contract extends Component {
     }
 
     const contract = api.newContract(account.meta.abi, params.address);
+
     contract
       .subscribe(null, { limit: 25, fromBlock: 0, toBlock: 'pending' }, this._receiveEvents)
       .then((subscriptionId) => {
diff --git a/js/src/views/Contracts/contracts.js b/js/src/views/Contracts/contracts.js
index 7f1fabd7d..3edf7a422 100644
--- a/js/src/views/Contracts/contracts.js
+++ b/js/src/views/Contracts/contracts.js
@@ -70,6 +70,7 @@ class Contracts extends Component {
   setVisibleAccounts (props = this.props) {
     const { contracts, setVisibleAccounts } = props;
     const addresses = Object.keys(contracts);
+
     setVisibleAccounts(addresses);
   }
 
@@ -204,6 +205,7 @@ class Contracts extends Component {
   onAddSearchToken = (token) => {
     const { searchTokens } = this.state;
     const newSearchTokens = uniq([].concat(searchTokens, token));
+
     this.setState({ searchTokens: newSearchTokens });
   }
 
diff --git a/js/src/views/Dapp/dapp.js b/js/src/views/Dapp/dapp.js
index e317d2ddc..7e712c809 100644
--- a/js/src/views/Dapp/dapp.js
+++ b/js/src/views/Dapp/dapp.js
@@ -41,6 +41,7 @@ export default class Dapp extends Component {
 
   componentWillMount () {
     const { id } = this.props.params;
+
     this.loadApp(id);
   }
 
@@ -94,6 +95,7 @@ export default class Dapp extends Component {
     }
 
     let src = null;
+
     switch (app.type) {
       case 'local':
         src = `${dappsUrl}/${app.id}/`;
diff --git a/js/src/views/Dapps/UrlButton/urlButton.js b/js/src/views/Dapps/UrlButton/urlButton.js
index bf3a7863f..2cf6ec2dd 100644
--- a/js/src/views/Dapps/UrlButton/urlButton.js
+++ b/js/src/views/Dapps/UrlButton/urlButton.js
@@ -75,6 +75,7 @@ class UrlButton extends Component {
 
   toggleInput = () => {
     const { inputShown } = this.state;
+
     this.setState({
       inputShown: !inputShown
     });
diff --git a/js/src/views/Dapps/dapps.js b/js/src/views/Dapps/dapps.js
index 98351755c..acc00fb91 100644
--- a/js/src/views/Dapps/dapps.js
+++ b/js/src/views/Dapps/dapps.js
@@ -51,6 +51,7 @@ class Dapps extends Component {
 
   render () {
     let externalOverlay = null;
+
     if (this.store.externalOverlayVisible) {
       externalOverlay = (
         <div className={ styles.overlay }>
diff --git a/js/src/views/Dapps/dappsStore.js b/js/src/views/Dapps/dappsStore.js
index 4fe86949e..16e0a0de0 100644
--- a/js/src/views/Dapps/dappsStore.js
+++ b/js/src/views/Dapps/dappsStore.js
@@ -278,6 +278,7 @@ export default class DappsStore extends EventEmitter {
         .sort((a, b) => a.name.localeCompare(b.name));
 
       const visibility = {};
+
       apps.forEach((app) => {
         if (!this.displayApps[app.id]) {
           visibility[app.id] = { visible: app.visible };
diff --git a/js/src/views/ParityBar/parityBar.js b/js/src/views/ParityBar/parityBar.js
index 1c7fdaeb3..3cc342e12 100644
--- a/js/src/views/ParityBar/parityBar.js
+++ b/js/src/views/ParityBar/parityBar.js
@@ -322,6 +322,7 @@ class ParityBar extends Component {
     }
 
     const right = page.width - x - button.offset.right;
+
     return { right: Math.max(0, right) };
   }
 
@@ -438,6 +439,7 @@ class ParityBar extends Component {
 
   onMouseMove = (event) => {
     const { pageX, pageY } = event;
+
     // this._onMouseMove({ pageX, pageY });
     this.debouncedMouseMove({ pageX, pageY });
 
@@ -452,6 +454,7 @@ class ParityBar extends Component {
 
     const { pageX, pageY } = event;
     const position = this.getPosition(pageX, pageY);
+
     this.setState({ position });
   }
 
@@ -512,11 +515,13 @@ class ParityBar extends Component {
     }
 
     const position = this.stringToPosition(app.position);
+
     this.setState({ position });
   }
 
   savePosition (position) {
     const { app, config } = this;
+
     config[app.id] = position;
 
     store.set(LS_STORE_KEY, JSON.stringify(config));
diff --git a/js/src/views/Settings/Background/background.js b/js/src/views/Settings/Background/background.js
index a81f837c4..daece4ec7 100644
--- a/js/src/views/Settings/Background/background.js
+++ b/js/src/views/Settings/Background/background.js
@@ -47,6 +47,7 @@ class Background extends Component {
   componentDidMount () {
     const { settings } = this.props;
     const seeds = new Array(20).fill(null);
+
     seeds[0] = settings.backgroundSeed;
 
     this.setState({
diff --git a/js/src/views/Settings/Parity/parity.js b/js/src/views/Settings/Parity/parity.js
index 532343f92..8890e3147 100644
--- a/js/src/views/Settings/Parity/parity.js
+++ b/js/src/views/Settings/Parity/parity.js
@@ -139,6 +139,7 @@ export default class Parity extends Component {
 
       const onChange = (_, index) => {
         const nextLevel = Object.values(selectValues)[index].value;
+
         LogLevel.getLogger(key).setLevel(nextLevel);
         this.loadLogLevels();
       };
diff --git a/js/src/views/Signer/components/Account/AccountLink/accountLink.js b/js/src/views/Signer/components/Account/AccountLink/accountLink.js
index f3ccf8e12..fc684e657 100644
--- a/js/src/views/Signer/components/Account/AccountLink/accountLink.js
+++ b/js/src/views/Signer/components/Account/AccountLink/accountLink.js
@@ -45,6 +45,7 @@ export default class AccountLink extends Component {
 
   render () {
     const { children, address, className } = this.props;
+
     return (
       <a
         href={ this.state.link }
diff --git a/js/src/views/Signer/components/Account/account.js b/js/src/views/Signer/components/Account/account.js
index caa9bc1e3..24ec67e80 100644
--- a/js/src/views/Signer/components/Account/account.js
+++ b/js/src/views/Signer/components/Account/account.js
@@ -72,6 +72,7 @@ export default class Account extends Component {
 
   renderBalance () {
     const { balanceDisplay } = this.state;
+
     return (
       <span> <strong>{ balanceDisplay }</strong> <small>ETH</small></span>
     );
@@ -108,12 +109,14 @@ export default class Account extends Component {
   tinyAddress () {
     const { address } = this.props;
     const len = address.length;
+
     return address.slice(2, 4) + '..' + address.slice(len - 2);
   }
 
   shortAddress () {
     const { address } = this.props;
     const len = address.length;
+
     return address.slice(2, 8) + '..' + address.slice(len - 7);
   }
 }
diff --git a/js/src/views/Signer/components/RequestPending/requestPending.js b/js/src/views/Signer/components/RequestPending/requestPending.js
index 461d205ba..c2f866884 100644
--- a/js/src/views/Signer/components/RequestPending/requestPending.js
+++ b/js/src/views/Signer/components/RequestPending/requestPending.js
@@ -74,6 +74,7 @@ export default class RequestPending extends Component {
     }
 
     const transaction = payload.sendTransaction || payload.signTransaction;
+
     if (transaction) {
       return (
         <TransactionPending
diff --git a/js/src/views/Signer/components/TransactionPendingForm/TransactionPendingFormConfirm/transactionPendingFormConfirm.js b/js/src/views/Signer/components/TransactionPendingForm/TransactionPendingFormConfirm/transactionPendingFormConfirm.js
index b7e1657ac..714d464d8 100644
--- a/js/src/views/Signer/components/TransactionPendingForm/TransactionPendingFormConfirm/transactionPendingFormConfirm.js
+++ b/js/src/views/Signer/components/TransactionPendingForm/TransactionPendingFormConfirm/transactionPendingFormConfirm.js
@@ -72,6 +72,7 @@ class TransactionPendingFormConfirm extends Component {
       }
 
       const inputNode = textNode.querySelector('input');
+
       inputNode && inputNode.focus();
     }
   }
diff --git a/js/src/views/Signer/components/util/transaction.js b/js/src/views/Signer/components/util/transaction.js
index 49e0c3654..b0e104d22 100644
--- a/js/src/views/Signer/components/util/transaction.js
+++ b/js/src/views/Signer/components/util/transaction.js
@@ -53,6 +53,7 @@ function _getFee (gas, gasPrice) {
 
 function _calcFeeInEth (totalValue, value) {
   let fee = new BigNumber(totalValue).sub(new BigNumber(value));
+
   return fee.times(WEI_TO_ETH_MULTIPLIER).toFormat(7);
 }
 
@@ -105,6 +106,7 @@ function _getTotalValueDisplayWei (totalValue) {
 
 function _getEthmFromWeiDisplay (weiHexString) {
   const value = new BigNumber(weiHexString);
+
   return value.times(WEI_TO_ETH_MULTIPLIER).times(1e7).toFixed(5);
 }
 
diff --git a/js/src/views/Status/components/Call/Call.js b/js/src/views/Status/components/Call/Call.js
index 0554e9762..f7f08a7a5 100644
--- a/js/src/views/Status/components/Call/Call.js
+++ b/js/src/views/Status/components/Call/Call.js
@@ -22,6 +22,7 @@ import styles from './Call.css';
 export default class Call extends Component {
   render () {
     let { callNo, name, params, response } = this.props.call;
+
     params = this.formatParams(params);
     return (
       <div
diff --git a/js/src/views/Status/components/CallsToolbar/CallsToolbar.js b/js/src/views/Status/components/CallsToolbar/CallsToolbar.js
index 716bc5be8..adbec65b0 100644
--- a/js/src/views/Status/components/CallsToolbar/CallsToolbar.js
+++ b/js/src/views/Status/components/CallsToolbar/CallsToolbar.js
@@ -38,6 +38,7 @@ export default class CallsToolbar extends Component {
     }
 
     const wrapStyle = { top: callEl.offsetTop - SCROLLBAR_WIDTH - containerEl.scrollTop };
+
     if (this.hasScrollbar(containerEl)) {
       wrapStyle.right = 13;
     }
diff --git a/js/src/views/Status/components/Debug/debug.js b/js/src/views/Status/components/Debug/debug.js
index 2ea268c7c..1c010eae9 100644
--- a/js/src/views/Status/components/Debug/debug.js
+++ b/js/src/views/Status/components/Debug/debug.js
@@ -139,6 +139,7 @@ export default class Debug extends Component {
 
   reverse = () => {
     const { reversed } = this.state;
+
     this.setState({ reversed: !reversed });
   }
 }
diff --git a/js/src/views/Status/components/JsonEditor/JsonEditor.js b/js/src/views/Status/components/JsonEditor/JsonEditor.js
index 75643966e..43dcb31b9 100644
--- a/js/src/views/Status/components/JsonEditor/JsonEditor.js
+++ b/js/src/views/Status/components/JsonEditor/JsonEditor.js
@@ -24,12 +24,14 @@ export default class JsonEditor extends Component {
   constructor (...args) {
     super(...args);
     let { value } = this.props;
+
     value = formatJson.plain(value);
     this.state = { value };
   }
 
   componentDidMount () {
     const mockedEvt = { target: { value: this.state.value } };
+
     this.onChange(mockedEvt);
   }
 
@@ -59,6 +61,7 @@ export default class JsonEditor extends Component {
 
   renderError () {
     const { error } = this.state;
+
     if (!error) {
       return;
     }
diff --git a/js/src/views/Status/components/Markdown/Markdown.js b/js/src/views/Status/components/Markdown/Markdown.js
index 7c97f31f6..31b0d8a67 100644
--- a/js/src/views/Status/components/Markdown/Markdown.js
+++ b/js/src/views/Status/components/Markdown/Markdown.js
@@ -23,6 +23,7 @@ export default class Marked extends Component {
 
   render () {
     let { parsed } = this.state;
+
     if (!parsed) {
       return null;
     }
diff --git a/js/src/views/Status/components/MiningSettings/decodeExtraData.js b/js/src/views/Status/components/MiningSettings/decodeExtraData.js
index 20c36f2b7..ee1af19a2 100644
--- a/js/src/views/Status/components/MiningSettings/decodeExtraData.js
+++ b/js/src/views/Status/components/MiningSettings/decodeExtraData.js
@@ -21,6 +21,7 @@ export function decodeExtraData (str) {
     // Try decoding as RLP
     const decoded = rlp.decode(str);
     const v = decoded[0];
+
     decoded[0] = decoded[1];
     decoded[1] = `${v[0]}.${v[1]}.${v[2]}`;
     return decoded.join('/');
diff --git a/js/src/views/Status/components/MiningSettings/miningSettings.js b/js/src/views/Status/components/MiningSettings/miningSettings.js
index 8cc04d45e..b2f3e25c4 100644
--- a/js/src/views/Status/components/MiningSettings/miningSettings.js
+++ b/js/src/views/Status/components/MiningSettings/miningSettings.js
@@ -105,6 +105,7 @@ export default class MiningSettings extends Component {
     // In case of resetting to default we are just using raw bytes from defaultExtraData
     // When user sets new value we can safely send a string that will be converted to hex by formatter.
     const val = isResetToDefault ? nodeStatus.defaultExtraData : newVal;
+
     api.parity.setExtraData(val);
   };
 
diff --git a/js/src/views/Status/components/Response/Response.js b/js/src/views/Status/components/Response/Response.js
index 889f13964..86a134d2b 100644
--- a/js/src/views/Status/components/Response/Response.js
+++ b/js/src/views/Status/components/Response/Response.js
@@ -36,6 +36,7 @@ export default class Response extends Component {
 
   renderArray () {
     let { response } = this.props;
+
     return response.map((r, idx) => (
       <span key={ idx }>
         { idx === 0 ? '[' : ',' }
@@ -49,6 +50,7 @@ export default class Response extends Component {
   renderObject () {
     let { response } = this.props;
     const arr = JSON.stringify(response, null, 1).split('\n');
+
     return arr.map((any, idx) => (
       <span key={ idx }>
         { any }
diff --git a/js/src/views/Status/components/RpcCalls/RpcCalls.js b/js/src/views/Status/components/RpcCalls/RpcCalls.js
index 0416a98db..b4b83c58d 100644
--- a/js/src/views/Status/components/RpcCalls/RpcCalls.js
+++ b/js/src/views/Status/components/RpcCalls/RpcCalls.js
@@ -36,6 +36,7 @@ export default class RpcCalls extends Component {
 
   componentWillReceiveProps (nextProps) {
     const { paramsValues, params } = nextProps.rpc.selectedMethod;
+
     if (paramsValues) {
       params.map((p, idx) => {
         // todo [adgo] 01.05.2016 - make sure this works
@@ -112,6 +113,7 @@ export default class RpcCalls extends Component {
     }
 
     const { returns } = this.props.rpc.selectedMethod;
+
     return (
       <div className='row'>
         { this.renderMethodList() }
@@ -126,6 +128,7 @@ export default class RpcCalls extends Component {
 
   renderMethodList () {
     const { desc } = this.props.rpc.selectedMethod;
+
     return (
       <div>
         <RpcAutoComplete
@@ -142,6 +145,7 @@ export default class RpcCalls extends Component {
 
   handleMethodChange = name => {
     const method = rpcMethods.find(m => m.name === name);
+
     this.props.actions.selectRpcMethod(method);
   }
 
@@ -151,6 +155,7 @@ export default class RpcCalls extends Component {
     }
 
     let { name, params, outputFormatter, inputFormatters } = this.props.rpc.selectedMethod;
+
     params = params.map(this.jsonParamValue);
 
     this.props.actions.fireRpc({
@@ -163,6 +168,7 @@ export default class RpcCalls extends Component {
 
   onCustomRpcFire () {
     const { method, params } = this.state.jsonEditorParsedValue;
+
     this.props.actions.fireRpc({ method, params });
   }
 
@@ -241,6 +247,7 @@ export default class RpcCalls extends Component {
       method: name,
       params: params.map(this.jsonParamValue)
     };
+
     this.setState({
       jsonEditorValue: json
     });
@@ -292,6 +299,7 @@ export default class RpcCalls extends Component {
   jsonParamValue = p => {
     if (_.isPlainObject(p)) {
       const { description, details } = p;
+
       return Object.keys(details).reduce((obj, key) => {
         obj[key] = this.paramValue(`${description}.${key}`);
         return obj;
diff --git a/js/src/views/Status/components/ScrollTopButton/util.js b/js/src/views/Status/components/ScrollTopButton/util.js
index 78100c74c..a41071948 100644
--- a/js/src/views/Status/components/ScrollTopButton/util.js
+++ b/js/src/views/Status/components/ScrollTopButton/util.js
@@ -22,6 +22,7 @@ export function scrollTo (element, to, duration) {
   let animateScroll = elapsedTime => {
     elapsedTime += increment;
     let position = easeInOut(elapsedTime, start, change, duration);
+
     element.scrollTop = position;
     if (elapsedTime < duration) {
       setTimeout(() => {
diff --git a/js/src/views/Status/middleware/localstorage.js b/js/src/views/Status/middleware/localstorage.js
index a5d64cab1..9da29fe38 100644
--- a/js/src/views/Status/middleware/localstorage.js
+++ b/js/src/views/Status/middleware/localstorage.js
@@ -22,6 +22,7 @@ export default class localStorageMiddleware {
   toMiddleware () {
     return store => next => action => {
       let delegate;
+
       switch (action.type) {
         case 'add rpcResponse': delegate = ::this.onAddRpcResponse; break;
         case 'reset rpcPrevCalls': delegate = ::this.onResetRpcCalls; break;
@@ -41,6 +42,7 @@ export default class localStorageMiddleware {
 
   onInitApp (store, next, action) {
     const prevCalls = localStore.get('rpcPrevCalls');
+
     if (!(prevCalls && prevCalls.length)) {
       return next(action);
     }
@@ -67,6 +69,7 @@ export default class localStorageMiddleware {
   // TODO [adgo] 20.04.2016 remove if/when PR is accepted: https://github.com/marcuswestin/store.js/pull/153
   unshift (key, value) {
     const newArr = [value].concat(localStore.get(key) || []);
+
     localStore.set(key, newArr);
   }
 }
diff --git a/js/src/views/Status/middleware/localstorage.spec.js b/js/src/views/Status/middleware/localstorage.spec.js
index 82010063d..ff399ff2d 100644
--- a/js/src/views/Status/middleware/localstorage.spec.js
+++ b/js/src/views/Status/middleware/localstorage.spec.js
@@ -22,7 +22,8 @@ import rpcData from '../data/rpc.json';
 import LocalStorageMiddleware from './localstorage';
 
 describe('views/Status/middleware/localstorage', () => {
-  let cut, state;
+  let cut;
+  let state;
 
   beforeEach('mock cut', () => {
     cut = new LocalStorageMiddleware();
@@ -43,6 +44,7 @@ describe('views/Status/middleware/localstorage', () => {
     const next = sinon.spy();
     const middleware = cut.toMiddleware()(store)(next);
     const action = { type: 'add rpcResponse', payload: {} };
+
     expect(middleware).to.be.a('function');
     expect(action).to.be.an('object');
 
@@ -59,6 +61,7 @@ describe('views/Status/middleware/localstorage', () => {
     const next = sinon.spy();
     const middleware = cut.toMiddleware()(store)(next);
     const action = { type: 'reset rpcPrevCalls', payload: {} };
+
     expect(middleware).to.be.a('function');
     expect(action).to.be.an('object');
 
@@ -75,6 +78,7 @@ describe('views/Status/middleware/localstorage', () => {
     const next = sinon.spy();
     const middleware = cut.toMiddleware()(store)(next);
     const action = { type: 'init app' };
+
     cut.onInitApp = sinon.spy();
     expect(middleware).to.be.a('function');
     expect(action).to.be.an('object');
@@ -92,6 +96,7 @@ describe('views/Status/middleware/localstorage', () => {
     const next = sinon.spy();
     const middleware = cut.toMiddleware()(store)(next);
     const action = { type: 'testAction' };
+
     expect(middleware).to.be.a('function');
     expect(action).to.be.an('object');
 
@@ -112,6 +117,7 @@ describe('views/Status/middleware/localstorage', () => {
       const action = {};
       const key = 'rpcPrevCalls';
       const prevCalls = [rpcData.methods[0]];
+
       prevCalls[0].callNo = 1;
       localStore.remove(key);
       localStore.set(key, prevCalls);
@@ -133,6 +139,7 @@ describe('views/Status/middleware/localstorage', () => {
       const store = { dispatch: sinon.spy() };
       const next = sinon.spy();
       const action = {};
+
       localStore.remove('rpcPrevCalls');
 
       // when
@@ -165,6 +172,7 @@ describe('views/Status/middleware/localstorage', () => {
       // given
       const key = 'foo';
       const val = 'bar';
+
       localStore.remove(key);
 
       // when
@@ -181,6 +189,7 @@ describe('views/Status/middleware/localstorage', () => {
       const key = 'foo';
       const val = 'bar';
       const newVal = 'bazz';
+
       localStore.remove(key);
       localStore.set(key, [val]);
       expect(localStore.get(key)).to.be.defined;
diff --git a/js/src/views/Status/reducers/rpc.js b/js/src/views/Status/reducers/rpc.js
index a581a3860..dc1a8b6a2 100644
--- a/js/src/views/Status/reducers/rpc.js
+++ b/js/src/views/Status/reducers/rpc.js
@@ -28,6 +28,7 @@ export const actionHandlers = {
   'add rpcResponse' (state, action) {
     const calls = [action.payload].concat(state.prevCalls);
     const maxCalls = 64;
+
     return {
       ...state,
       callNo: state.callNo + 1,
diff --git a/js/src/views/Wallet/wallet.js b/js/src/views/Wallet/wallet.js
index 1d8daa034..0ba19c28d 100644
--- a/js/src/views/Wallet/wallet.js
+++ b/js/src/views/Wallet/wallet.js
@@ -101,6 +101,7 @@ class Wallet extends Component {
   setVisibleAccounts (props = this.props) {
     const { address, setVisibleAccounts } = props;
     const addresses = [ address ];
+
     setVisibleAccounts(addresses);
   }
 
diff --git a/js/src/views/Web/web.js b/js/src/views/Web/web.js
index d5f0cd27d..5612e0114 100644
--- a/js/src/views/Web/web.js
+++ b/js/src/views/Web/web.js
@@ -85,6 +85,7 @@ export default class Web extends Component {
 
     const { dappsUrl } = this.context.api;
     const { url } = this.state;
+
     if (!url || !token) {
       return null;
     }
@@ -135,6 +136,7 @@ export default class Web extends Component {
     // Insert timestamp
     // This is a hack to prevent caching.
     const parsed = parseUrl(displayedUrl);
+
     parsed.query = parseQuery(parsed.query);
     parsed.query.t = Date.now().toString();
     delete parsed.search;
diff --git a/js/src/views/WriteContract/writeContractStore.js b/js/src/views/WriteContract/writeContractStore.js
index 6cc304eac..d9dd2c271 100644
--- a/js/src/views/WriteContract/writeContractStore.js
+++ b/js/src/views/WriteContract/writeContractStore.js
@@ -402,6 +402,7 @@ export default class WriteContractStore {
     this.sourcecode = value;
 
     const localStore = store.get(WRITE_CONTRACT_STORE_KEY) || {};
+
     store.set(WRITE_CONTRACT_STORE_KEY, {
       ...localStore,
       current: value
@@ -453,6 +454,7 @@ export default class WriteContractStore {
 
   @action reloadContracts = (id, sourcecode) => {
     const localStore = store.get(WRITE_CONTRACT_STORE_KEY) || {};
+
     this.savedContracts = localStore.saved || {};
 
     const cId = id !== undefined ? id : localStore.currentId;
@@ -475,6 +477,7 @@ export default class WriteContractStore {
 
   @action handleLoadContract = (contract) => {
     const { sourcecode, id } = contract;
+
     this.reloadContracts(id, sourcecode);
   }
 
diff --git a/js/src/web3.js b/js/src/web3.js
index 0de742c4d..f7ec1b23a 100644
--- a/js/src/web3.js
+++ b/js/src/web3.js
@@ -21,6 +21,7 @@ import './dev.web3.html';
 
 const http = new Web3.providers.HttpProvider('/rpc/');
 const web3 = new Web3(http);
+
 // set default account
 web3.eth.getAccounts((err, accounts) => {
   if (err || !accounts || !accounts[0]) {