Prefer const over let

examples/simple.js

@@ -11,9 +11,9 @@ const router = new Router()
 
 router
   .get('/auth', function * () {
-    let user = yield this.parseBody()
+    const user = yield this.parseBody()
     // verify with user.name and user.passwd, get user._id
-    let token = this.signToken({
+    const token = this.signToken({
       name: user.name,
       _id: user._id
     })

index.js

@@ -48,7 +48,7 @@ function toaToken (app, secretOrPrivateKeys, options) {
       if (this._toaJsonWebToken) return this._toaJsonWebToken
 
       let token
-      let authorization = this.get('authorization')
+      const authorization = this.get('authorization')
 
       if (getToken) token = getToken.call(this)
       if (!token && authorization) {
@@ -84,7 +84,7 @@ JWT.prototype.decodeToken = function (token, options) {
 
 JWT.prototype.verifyToken = function (token, options) {
   let error = null
-  let secretOrPrivateKeys = this.secretOrPrivateKeys
+  const secretOrPrivateKeys = this.secretOrPrivateKeys
 
   for (let i = 0, len = secretOrPrivateKeys.length - 1; i <= len; i++) {
     try {

test/index.js

@@ -10,7 +10,7 @@ const Toa = require('toa')
 const toaToken = require('../')
 
 function assertContains (src, dst) {
-  let keys = Object.keys(dst)
+  const keys = Object.keys(dst)
   for (let i = 0; i < keys.length; i++) {
     assert.strictEqual(src[keys[i]], dst[keys[i]])
   }