diff --git a/lib/cli.js b/lib/cli.js
index f616e8c..eae041d 100755
--- a/lib/cli.js
+++ b/lib/cli.js
@@ -1,9 +1,10 @@
 #!/usr/bin/env node
 
-const Table = require('cli-table3');
-const colors = require('@colors/colors/safe');
 const path = require('path');
 const fs = require('fs-extra');
+const Table = require('cli-table3');
+const colors = require('@colors/colors/safe');
+
 const { settings } = require('./settings');
 
 const { getTestSuitePaths, distributeTestsByWeight, getMaxPathLenghtFrom } = require('./test-suites');
@@ -15,18 +16,18 @@ const {
 const { executeThread } = require('./thread');
 const { resultsPath } = require('./shared-config');
 
-function cleanResultsPath() { 
-  if(!fs.existsSync(resultsPath)) {
-    fs.mkdirSync(resultsPath, { recursive: true }) 
+function cleanResultsPath() {
+  if (!fs.existsSync(resultsPath)) {
+    fs.mkdirSync(resultsPath, { recursive: true })
   } else {
     fs.readdir(resultsPath, (err, files) => {
-      if (err) console.log(err); 
-        for (const file of files) {
-          fs.unlink(path.join(resultsPath, file), err => { if (err) console.log(err); }); 
-        } 
-      });
-    }
+      if (err) console.error(err);
+      for (const file of files) {
+        fs.unlink(path.join(resultsPath, file), err => { if (err) console.error(err); });
+      }
+    });
   }
+}
 
 async function start() {
   cleanResultsPath();
@@ -45,7 +46,7 @@ async function start() {
   // should split below into calculateStatistics and presentResult methods
   resultMaps.forEach((m, t) => {
     let totTimeThread = 0;
-    for (let [name, test] of m) {
+    for (const [name, test] of m) {
       totTimeThread += test.duration;
     }
 
@@ -66,7 +67,7 @@ async function start() {
 
   let totalWeight = timeMap.size * 10;
   let specWeights = {};
-  for (let [name, suite] of timeMap) {
+  for (const [name, suite] of timeMap) {
     //The value of suite.tests is not what we expect.
     const nbTests = suite.passes + suite.pending + suite.failures;
     totalDuration += suite.duration;
@@ -119,8 +120,7 @@ async function start() {
 
   const timeSaved = totalDuration - timeTaken;
   console.log(
-    `Total run time: ${totalDuration / 1000}s, executed in: ${
-      timeTaken / 1000
+    `Total run time: ${totalDuration / 1000}s, executed in: ${timeTaken / 1000
     }, saved ${timeSaved / 1000} (~${Math.round(
       (timeSaved / totalDuration) * 100
     )}%)`
diff --git a/lib/json-stream.reporter.js b/lib/json-stream.reporter.js
index 14dea14..37135f5 100644
--- a/lib/json-stream.reporter.js
+++ b/lib/json-stream.reporter.js
@@ -5,15 +5,13 @@
 /**
  * Module dependencies.
  */
-var Base = require('mocha/lib/reporters/base');
-var constants = require('mocha/lib/runner').constants;
-var path = require('path');
-var fs = require('fs');
+const path = require('path');
+const fs = require('fs');
+const Base = require('mocha/lib/reporters/base');
+const { EVENT_SUITE_END } = require('mocha/lib/runner').constants;
 
 const { resultsPath } = require('./shared-config');
 
-const { EVENT_SUITE_END } = constants;
-
 /**
  * Expose `JSONStream`.
  */
@@ -26,8 +24,8 @@ exports = module.exports = JSONStreamCustom;
  * @class
  * @memberof Mocha.reporters
  * @extends Mocha.reporters.Base
- * @param {Runner} runner - Instance triggers reporter actions.
- * @param {Object} [options] - runner options
+ * @param {Mocha.Runner} runner - Instance triggers reporter actions.
+ * @param {Mocha.RunnerOptions} [options] - runner options
  */
 function JSONStreamCustom(runner, options) {
   Base.call(this, runner, options);
diff --git a/lib/simple-spec.reporter.js b/lib/simple-spec.reporter.js
index fbc346e..6449509 100644
--- a/lib/simple-spec.reporter.js
+++ b/lib/simple-spec.reporter.js
@@ -5,17 +5,15 @@
 /**
  * Module dependencies.
  */
-var Base = require('mocha/lib/reporters/base');
-var constants = require('mocha/lib/runner').constants;
-
-const settings = JSON.parse(process.env.CY_PARALLEL_SETTINGS);
-
+const Base = require('mocha/lib/reporters/base');
 const {
   EVENT_TEST_PENDING,
   EVENT_TEST_FAIL,
   EVENT_TEST_PASS,
   EVENT_SUITE_BEGIN
-} = constants;
+} = require('mocha/lib/runner').constants;
+
+const settings = JSON.parse(process.env.CY_PARALLEL_SETTINGS);
 
 /**
  * Expose `JSONStream`.
@@ -29,8 +27,8 @@ exports = module.exports = JSONStreamCustom;
  * @class
  * @memberof Mocha.reporters
  * @extends Mocha.reporters.Base
- * @param {Runner} runner - Instance triggers reporter actions.
- * @param {Object} [options] - runner options
+ * @param {Mocha.Runner} runner - Instance triggers reporter actions.
+ * @param {Mocha.RunnerOptions} [options] - runner options
  */
 function JSONStreamCustom(runner, options) {
   Base.call(this, runner, options);
@@ -70,8 +68,8 @@ function JSONStreamCustom(runner, options) {
       })
     } else {
       consoleLog(format, getTestDescription(test));
-      }
-    });
+    }
+  });
 
   runner.on(EVENT_TEST_PASS, function (test) {
     const format =
diff --git a/lib/test-suites.js b/lib/test-suites.js
index 4bdb2fc..e5fe724 100644
--- a/lib/test-suites.js
+++ b/lib/test-suites.js
@@ -22,7 +22,7 @@ async function getTestSuitePaths() {
     console.log(`Using pattern ${settings.testSuitesPath} to find test suites`);
     fileList = await glob(settings.testSuitesPath, { ignore: 'node_modules/**' });
   } else {
-    console.log(
+    console.warn(
       'DEPRECATED: using path is deprecated and will be removed, switch to glob pattern'
     );
     fileList = getFilePathsByPath(settings.testSuitesPath);
@@ -48,7 +48,7 @@ async function getTestSuitePaths() {
 function getMaxPathLenghtFrom(testSuitePaths) {
   let maxLength = 10;
 
-  for(let path of testSuitePaths){
+  for(const path of testSuitePaths){
     maxLength = Math.max(maxLength, path.length);
   }
 
@@ -64,7 +64,7 @@ function distributeTestsByWeight(testSuitePaths) {
   }
 
   let map = new Map();
-  for (let f of testSuitePaths) {
+  for (const f of testSuitePaths) {
     let specWeight = settings.defaultWeight;
     Object.keys(specWeights).forEach((spec) => {
       if (f.endsWith(spec)) {
diff --git a/lib/thread.js b/lib/thread.js
index 70db2bd..bdf15fe 100644
--- a/lib/thread.js
+++ b/lib/thread.js
@@ -1,7 +1,7 @@
-const spawn = require('cross-spawn');
-const { isYarn } = require('is-npm');
 const path = require('path');
 const fs = require('fs');
+const spawn = require('cross-spawn');
+const { isYarn } = require('is-npm');
 const camelCase = require('lodash.camelcase');
 const globEscape = require('glob-escape');
 
@@ -32,7 +32,7 @@ function createReporterOptions(string) {
 
 function createReporterConfigFile(path) {
   const reporterEnabled = ['cypress-parallel/json-stream.reporter.js'];
-  let reporterName = settings.reporter;
+  const reporterName = settings.reporter;
   if (settings.reporter) {
     reporterEnabled.push(reporterName);
   } else {