From ec8901a23c5194b6f7e6eee9c2568e5020c944ce Mon Sep 17 00:00:00 2001
From: Christopher Hiller <boneskull@boneskull.com>
Date: Wed, 28 Feb 2018 21:47:26 -0800
Subject: [PATCH] remove unused functionality in utils module

---
 lib/utils.js                      | 84 ++++++-------------------------
 test/node-unit/file-utils.spec.js | 26 ++--------
 2 files changed, 20 insertions(+), 90 deletions(-)

diff --git a/lib/utils.js b/lib/utils.js
index a6a74540d9..a32e0a4917 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -1,29 +1,15 @@
 'use strict';
 
-/* eslint-env browser */
-
 /**
  * Module dependencies.
  */
 
-var basename = require('path').basename;
 var debug = require('debug')('mocha:watch');
-var exists = require('fs').existsSync;
+var fs = require('fs');
 var glob = require('glob');
 var path = require('path');
-var join = path.join;
-var readdirSync = require('fs').readdirSync;
-var statSync = require('fs').statSync;
-var watchFile = require('fs').watchFile;
-var lstatSync = require('fs').lstatSync;
 var he = require('he');
 
-/**
- * Ignored directories.
- */
-
-var ignore = ['node_modules', '.git'];
-
 exports.inherits = require('util').inherits;
 
 /**
@@ -60,7 +46,7 @@ exports.watch = function (files, fn) {
   var options = { interval: 100 };
   files.forEach(function (file) {
     debug('file %s', file);
-    watchFile(file, options, function (curr, prev) {
+    fs.watchFile(file, options, function (curr, prev) {
       if (prev.mtime < curr.mtime) {
         fn(file);
       }
@@ -68,46 +54,6 @@ exports.watch = function (files, fn) {
   });
 };
 
-/**
- * Ignored files.
- *
- * @api private
- * @param {string} path
- * @return {boolean}
- */
-function ignored (path) {
-  return !~ignore.indexOf(path);
-}
-
-/**
- * Lookup files in the given `dir`.
- *
- * @api private
- * @param {string} dir
- * @param {string[]} [ext=['.js']]
- * @param {Array} [ret=[]]
- * @return {Array}
- */
-exports.files = function (dir, ext, ret) {
-  ret = ret || [];
-  ext = ext || ['js'];
-
-  var re = new RegExp('\\.(' + ext.join('|') + ')$');
-
-  readdirSync(dir)
-    .filter(ignored)
-    .forEach(function (path) {
-      path = join(dir, path);
-      if (lstatSync(path).isDirectory()) {
-        exports.files(path, ext, ret);
-      } else if (path.match(re)) {
-        ret.push(path);
-      }
-    });
-
-  return ret;
-};
-
 /**
  * Compute a slug from the given `str`.
  *
@@ -469,40 +415,40 @@ exports.canonicalize = function canonicalize (value, stack, typeHint) {
  * Lookup file names at the given `path`.
  *
  * @api public
- * @param {string} path Base path to start searching from.
+ * @param {string} filepath Base path to start searching from.
  * @param {string[]} extensions File extensions to look for.
  * @param {boolean} recursive Whether or not to recurse into subdirectories.
  * @return {string[]} An array of paths.
  */
-exports.lookupFiles = function lookupFiles (path, extensions, recursive) {
+exports.lookupFiles = function lookupFiles (filepath, extensions, recursive) {
   var files = [];
 
-  if (!exists(path)) {
-    if (exists(path + '.js')) {
-      path += '.js';
+  if (!fs.existsSync(filepath)) {
+    if (fs.existsSync(filepath + '.js')) {
+      filepath += '.js';
     } else {
-      files = glob.sync(path);
+      files = glob.sync(filepath);
       if (!files.length) {
-        throw new Error("cannot resolve path (or pattern) '" + path + "'");
+        throw new Error("cannot resolve path (or pattern) '" + filepath + "'");
       }
       return files;
     }
   }
 
   try {
-    var stat = statSync(path);
+    var stat = fs.statSync(filepath);
     if (stat.isFile()) {
-      return path;
+      return filepath;
     }
   } catch (err) {
     // ignore error
     return;
   }
 
-  readdirSync(path).forEach(function (file) {
-    file = join(path, file);
+  fs.readdirSync(filepath).forEach(function (file) {
+    file = path.join(filepath, file);
     try {
-      var stat = statSync(file);
+      var stat = fs.statSync(file);
       if (stat.isDirectory()) {
         if (recursive) {
           files = files.concat(lookupFiles(file, extensions, recursive));
@@ -514,7 +460,7 @@ exports.lookupFiles = function lookupFiles (path, extensions, recursive) {
       return;
     }
     var re = new RegExp('\\.(?:' + extensions.join('|') + ')$');
-    if (!stat.isFile() || !re.test(file) || basename(file)[0] === '.') {
+    if (!stat.isFile() || !re.test(file) || path.basename(file)[0] === '.') {
       return;
     }
     files.push(file);
diff --git a/test/node-unit/file-utils.spec.js b/test/node-unit/file-utils.spec.js
index f425468a26..e3c4f4a4ca 100644
--- a/test/node-unit/file-utils.spec.js
+++ b/test/node-unit/file-utils.spec.js
@@ -38,7 +38,11 @@ describe('file utils', function () {
   });
 
   describe('.lookupFiles', function () {
-    (symlinkSupported ? it : it.skip)('should not return broken symlink file path', function () {
+    it('should not return broken symlink file path', function () {
+      if (!symlinkSupported) {
+        return this.skip();
+      }
+
       expect(utils.lookupFiles(tmpDir, ['js'], false))
         .to
         .contain(tmpFile('mocha-utils-link.js'))
@@ -101,26 +105,6 @@ describe('file utils', function () {
     });
   });
 
-  describe('.files', function () {
-    (symlinkSupported ? it : it.skip)('should return broken symlink file path', function () {
-      expect(utils.files(tmpDir, ['js']))
-        .to.contain(tmpFile('mocha-utils-link.js'))
-        .and.contain(tmpFile('mocha-utils.js'))
-        .and.have.length(2);
-
-      expect(existsSync(tmpFile('mocha-utils-link.js')))
-        .to.be(true);
-
-      fs.renameSync(tmpFile('mocha-utils.js'), tmpFile('bob'));
-
-      expect(existsSync(tmpFile('mocha-utils-link.js')))
-        .to.be(false);
-
-      expect(utils.files(tmpDir, ['js']))
-        .to.eql([tmpFile('mocha-utils-link.js')]);
-    });
-  });
-
   afterEach(removeTempDir);
 
   function makeTempDir () {