tweaks eslint rules, fixes gulp-eslint, adds some comments

.eslintrc

@@ -68,12 +68,12 @@
         "no-this-before-super": 2,
         "no-var": 2,
         "object-shorthand": 2,
-        "prefer-const": 2,
+        "prefer-const": 0,
         "prefer-spread": 2,
         "prefer-template": 2,
         "array-bracket-spacing": [2, "never"],
         "brace-style": [2, "1tbs", { "allowSingleLine": false }],
-        "camel-case": 2,
+        "camelcase": 2,
         "comma-spacing": 2,
         "comma-style": [2, "last"],
         "computed-property-spacing": [2, "never"],
@@ -98,7 +98,7 @@
         "operator-linebreak": [2, "after"],
         "quote-props": [2, "as-needed", { "keywords": true }],
         "semi-spacing": [2, {"before": false, "after": true}],
-        "space-after-keyword": 2,
+        "space-after-keywords": 2,
         "space-before-blocks": 2,
         "space-before-function-paren": 2,
         "space-before-keywords": 2,
@@ -109,7 +109,7 @@
         "spaced-comment": [2, "always", { exceptions: ["-"]}],
         "padded-blocks": [2, "never"],
         "no-multiple-empty-lines": [2, {max: 2}],
-        "lines-around-comment": [2, { "beforeBlockComment": true, "beforeLineComment": true }]
+        "lines-around-comment": [2, { "beforeBlockComment": true, "beforeLineComment": true, "allowBlockStart": true }]
     },
     "env": {
         "es6": true,

package.json

@@ -21,6 +21,7 @@
     "cookie-session": "^1.2.0",
     "coupon-code": "~0.3.0",
     "domain-middleware": "~0.1.0",
+    "estraverse": "^4.1.1",
     "express": "~4.13.3",
     "express-csv": "~0.6.0",
     "firebase": "^2.2.9",

tasks/gulp-eslint.js

@@ -3,6 +3,9 @@ import eslint from 'gulp-eslint';
 
 // TODO lint client
 // TDOO separate linting cong between
+// TODO lint gulp tasks, tests, ...?
+// TODO what about prefer-const rule?
+// TODO remove estraverse dependency once https://github.com/adametry/gulp-eslint/issues/117 sorted out
 gulp.task('lint:server', () => {
   // Ignore .coffee files
   return gulp

website/src/middlewares/api-v3/errorHandler.js

@@ -7,9 +7,10 @@ let errors = require('../../libs/api-v3/errors');
 let CustomError = errors.CustomError;
 let InternalServerError = errors.InternalServerError;
 
-module.exports = function (err, req, res, next) {
+module.exports = function errorHandlerMiddleware (err, req, res, next) {
   // Log the original error with some metadata
   let stack = err.stack || err.message || err;
+
   logger.error(stack, {
     originalUrl: req.originalUrl,
     headers: req.headers,

website/src/middlewares/api-v3/index.js

@@ -4,8 +4,7 @@
 
 let errorHandler = require('./errorHandler');
 
-module.exports = function (app) {
-
+module.exports = function attachMiddlewares (app) {
   // Error handler middleware, define as the last one
   app.use(errorHandler);
 };