Fixed log file generation

Author: lgraubner

lib/W3CValidator.js

@@ -7,7 +7,10 @@ var Crawler = require("simplecrawler");
 var program = require("commander");
 var chalk = require("chalk");
 var exec = require("child_process").exec;
-var _ = require("lodash");
+var _ = {
+    isEmpty: require("lodash/lang/isEmpty"),
+    forEach: require("lodash/collection/forEach")
+};
 var Spinner = require("cli-spinner").Spinner;
 var findJavaHome = require("find-java-home");
 var URL = require("url-parse");
@@ -31,6 +34,7 @@ var W3CValidator = function(url, java_home) {
     this.valid = 0;
     this.invalid = 0;
     this.JAVA_HOME = java_home;
+    this.logData = "";
 
     this.uri = new URL(url);
     this.crawler = new Crawler(this.uri.host);
@@ -94,21 +98,30 @@ W3CValidator.prototype.checkURL = function() {
                 });
             }
 
-            if (program.log) {
-                var data = "";
-                data += `${url}\n`;
-                _.forEach(errors.messages, function(m) {
-                    data += `    Line ${m.lastLine}:  ${m.message}\n`;
+            if (program.log && errors.messages) {
+                this.logData += `\n${url}\n`;
+                _.forEach(errors.messages, (m) => {
+                    this.logData += `    Line ${m.lastLine}:  ${m.message}\n`;
                 });
-                fs.writeFile(path.join("./", `${this.logFileName}.txt`), data);
             }
         }
 
         if (!_.isEmpty(this.chunk)) {
             this.checkURL();
         } else {
-            console.log(chalk.white("Checked %s sites. %s valid, %s invalid."), this.count, this.valid, this.invalid);
-            process.exit();
+            var finish = function() {
+                console.log(chalk.white("Checked %s sites. %s valid, %s invalid."), this.count, this.valid, this.invalid);
+                process.exit();
+            };
+
+            if (program.log) {
+                fs.writeFile(path.join("./", `${this.logFileName}.txt`), this.logData, () => {
+                    console.log("Wrote logged error data to \"%s.txt\".", this.logFileName);
+                    finish.call(this);
+                });
+            } else {
+                finish.call(this);
+            }
         }
     });
 };

package.json

@@ -1,6 +1,6 @@
 {
   "name": "w3c-validator",
-  "version": "3.0.0",
+  "version": "3.0.1",
   "description": "Crawls a given site and checks for W3C validity.",
   "homepage": "https://github.com/lgraubner/node-w3c-validator",
   "author": {