freelist: simplify export

PR-URL: https://github.com/nodejs/node/pull/12644
Reviewed-By: Brian White <mscdex@mscdex.net>

lib/_http_common.js

@@ -25,7 +25,7 @@ const binding = process.binding('http_parser');
 const methods = binding.methods;
 const HTTPParser = binding.HTTPParser;
 
-const FreeList = require('internal/freelist').FreeList;
+const FreeList = require('internal/freelist');
 const ondrain = require('internal/http').ondrain;
 const incoming = require('_http_incoming');
 const IncomingMessage = incoming.IncomingMessage;

lib/internal/freelist.js

@@ -22,4 +22,4 @@ class FreeList {
   }
 }
 
-module.exports = {FreeList};
+module.exports = FreeList;

test/parallel/test-freelist.js

@@ -4,12 +4,11 @@
 
 require('../common');
 const assert = require('assert');
-const freelist = require('internal/freelist');
+const FreeList = require('internal/freelist');
 
-assert.strictEqual(typeof freelist, 'object');
-assert.strictEqual(typeof freelist.FreeList, 'function');
+assert.strictEqual(typeof FreeList, 'function');
 
-const flist1 = new freelist.FreeList('flist1', 3, String);
+const flist1 = new FreeList('flist1', 3, String);
 
 // Allocating when empty, should not change the list size
 const result = flist1.alloc('test');

test/parallel/test-internal-modules-expose.js

@@ -7,5 +7,5 @@ const config = process.binding('config');
 
 console.log(config, process.argv);
 
-assert.strictEqual(typeof require('internal/freelist').FreeList, 'function');
+assert.strictEqual(typeof require('internal/freelist'), 'function');
 assert.strictEqual(config.exposeInternals, true);