Fix remaining StandardJS errors

Author: feross

lib/compare-solution.js

@@ -1,3 +1,5 @@
+/* eslint-disable standard/no-callback-literal */
+
 require('colors')
 
 var path = require('path')

lib/get-file.js

@@ -1,5 +1,4 @@
 var fs = require('fs')
-var path = require('path')
 
 module.exports = function (filepath) {
   return fs.readFileSync(filepath, 'utf8')

lib/problem.js

@@ -1,3 +1,5 @@
+/* eslint-disable standard/no-callback-literal */
+
 var path = require('path')
 var getFile = require('./get-file')
 var compare = require('./compare-solution')

lib/run-solution.js

@@ -1,24 +1,18 @@
 var fs = require('fs')
-var path = require('path')
-var docs = path.join(__dirname, 'docs')
 var exec = require('child_process').exec
 
-if (typeof Promise === 'undefined') {
-  var Promise = require('promise')
-}
-
 /**
  * @param {!string} filePath
  * @return {Promise}
  */
 function exists (filePath) {
-  return new Promise(function (res, rej) {
+  return new Promise(function (resolve, reject) {
     fs.stat(filePath, function (err, d) {
       if (err) {
-        res(false)
+        resolve(false)
       }
 
-      res(true)
+      resolve(true)
     })
   })
 }
@@ -28,13 +22,13 @@ function exists (filePath) {
  * @return {Promise}
  */
 function executeSolution (filePath) {
-  return new Promise(function (res, rej) {
+  return new Promise(function (resolve, reject) {
     exec('node "' + filePath + '"', function (err, stdout, stderr) {
       if (err) {
-        return rej(err)
+        return reject(err)
       }
 
-      return res(stdout)
+      return resolve(stdout)
     })
   })
 }

package.json

@@ -13,7 +13,6 @@
   "preferGlobal": true,
   "dependencies": {
     "colors": "^1.3.3",
-    "promise": "^8.0.3",
     "diff": "^4.0.1",
     "workshopper-adventure": "^6.0.4"
   },

solutions/scope/index.js

@@ -1,3 +1,5 @@
+/* eslint-disable no-unused-vars */
+
 const a = 1; const b = 2; const c = 3;
 
 (function firstFunction () {