Lint

package.json

@@ -5,7 +5,8 @@
   "main": "server.js",
   "scripts": {
     "start": "node .",
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "lint": "standard --fix server.js public/js/main.js"
   },
   "author": "",
   "license": "MIT",

public/js/main.js

@@ -1,12 +1,18 @@
+// elements
+
 const loginButton = document.getElementById('login')
 const logoutButton = document.getElementById('logout')
 const verifyButton = document.getElementById('verify')
 const output = document.getElementById('output')
 
+// provider
+
 const authereum = new Authereum('kovan')
 const provider = authereum.getProvider()
 const web3 = new Web3(provider)
 
+// events
+
 loginButton.addEventListener('click', async (event) => {
   event.preventDefault()
 
@@ -27,33 +33,33 @@ verifyButton.addEventListener('click', async (event) => {
   log(res)
 })
 
-;(() => {
-  loginCheck()
-})();
+loginCheck()
+
+// helpers
 
-async function login() {
+async function login () {
   if (!await authereum.isAuthenticated()) {
     await authereum.login()
   }
 
   await loginCheck()
 }
 
-async function loginCheck() {
+async function loginCheck () {
   const loggedIn = await authereum.isAuthenticated()
-  log({loggedIn})
+  log({ loggedIn })
 
   loginButton.style.display = loggedIn ? 'none' : 'inline-block'
   logoutButton.style.display = loggedIn ? 'inline-block' : 'none'
-  verifyButton.style.display =  loggedIn ? 'inline-block' : 'none'
+  verifyButton.style.display = loggedIn ? 'inline-block' : 'none'
 }
 
-async function logout() {
+async function logout () {
   await authereum.logout()
   await loginCheck()
 }
 
-async function signChallenge() {
+async function signChallenge () {
   const res = await fetch('/challenge')
   const json = await res.json()
 
@@ -74,24 +80,24 @@ async function signChallenge() {
   localStorage.setItem('token', token)
 }
 
-async function verifyToken() {
+async function verifyToken () {
   const token = localStorage.getItem('token')
   if (!token) {
-    return {error: 'token not set'}
+    return { error: 'token not set' }
   }
 
   const res = await fetch('/verify', {
     headers: {
       'content-type': 'application/json',
-      'Authorization': `Bearer ${token}`
+      Authorization: `Bearer ${token}`
     }
   })
 
   const json = await res.json()
   return json
 }
 
-function log(content) {
+function log (content) {
   if (typeof content === 'object') {
     content = JSON.stringify(content, null, 2)
   }

server.js

@@ -17,15 +17,15 @@ app.use(jwt({
 const challenge = 'sign this string'
 
 app.get('/challenge', (req, res) => {
-  res.json({challenge})
+  res.json({ challenge })
 })
 
 app.get('/verify', async (req, res) => {
   const { address, signature } = req.auth
 
-  const data = '0x'+Buffer.from(challenge).toString('hex')
+  const data = '0x' + Buffer.from(challenge).toString('hex')
   const verified = await verifySignature(address, data, signature)
-  res.json({verified})
+  res.json({ verified })
 })
 
 const port = process.env.PORT || 8000
@@ -34,30 +34,30 @@ app.listen(port, () => {
   console.log(`Listening on port ${port}`)
 })
 
-async function verifySignature(account, data, signature) {
+async function verifySignature (account, data, signature) {
   const eip1271Abi = [
     {
-      "constant": true,
-      "inputs": [
+      constant: true,
+      inputs: [
         {
-          "name": "_messageHash",
-          "type": "bytes"
+          name: '_messageHash',
+          type: 'bytes'
         },
         {
-          "name": "_signature",
-          "type": "bytes"
+          name: '_signature',
+          type: 'bytes'
         }
       ],
-      "name": "isValidSignature",
-      "outputs": [
+      name: 'isValidSignature',
+      outputs: [
         {
-          "name": "magicValue",
-          "type": "bytes4"
+          name: 'magicValue',
+          type: 'bytes4'
         }
       ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
+      payable: false,
+      stateMutability: 'view',
+      type: 'function'
     }
   ]
 
@@ -69,4 +69,3 @@ async function verifySignature(account, data, signature) {
 
   return verified
 }
-