fix(server): switch to sync write

BridgeAR · dignifiedquire · commit 6ec74ee8f6f7 · 2018-02-26T11:32:25.000+01:00
The async write operation has no callback and errors are not
detected that way. Switch to the sync version to circumvent that
problem.
diff --git a/lib/server.js b/lib/server.js
@@ -269,7 +269,7 @@ Server.prototype._start = function (config, launcher, preprocess, fileList,
         return logMap[m]
       })
       self.log.debug('Writing browser console line: %s', logString)
-      fs.write(browserLogFile, logString + '\n')
+      fs.writeSync(browserLogFile, logString + '\n')
     })
   }
 

Original file line number	Diff line number	Diff line change
`@@ -269,7 +269,7 @@ Server.prototype._start = function (config, launcher, preprocess, fileList,`
`269`	`269`	`return logMap[m]`
`270`	`270`	`})`
`271`	`271`	`self.log.debug('Writing browser console line: %s', logString)`
`272`		`- fs.write(browserLogFile, logString + '\n')`
	`272`	`+ fs.writeSync(browserLogFile, logString + '\n')`
`273`	`273`	`})`
`274`	`274`	`}`
`275`	`275`