Fix undefined client send pdf position query. #4

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/) 
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [0.2.2] - 2017-01-13
+### Fixed
+- (#4) Compile throw error on sending websocket message with undefined client.
+
 ## [0.2.1] - 2017-01-12
 ### Changed
 - In browser PDF preview URL.
@@ -27,7 +31,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [0.1.10] - 2017-01-09
 ### Changed
-- Use HTML data to store PDF position before compilation.
+- (#2) Use HTML data to store PDF position before compilation.
   - The PDF position can be restored after compilation instead of previous SyncTeX method.
 
 ## [0.1.9] - 2017-01-05
@@ -59,7 +63,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Right click text editor for compile option.
 
 ### Changed
-- Compile and preview will search for main tex document for processing.
+- (#1) Compile and preview will search for main tex document for processing.
   - Main document is determined by "\begin{document}" string.
   - If the current active file has this string, it is set to the main document.
   - Otherwise, all .tex files under the root of the opened folder is checked. The first one with this string is the main document.

package.json

@@ -3,7 +3,7 @@
     "displayName": "LaTeX Workshop",
     "description": "AIO LaTeX extension to preview, compile, autocomplete, colorize, and more.",
     "icon": "img/icon.png",
-    "version": "0.2.1",
+    "version": "0.2.2",
     "publisher": "James-Yu",
     "license": "MIT",
     "homepage": "https://github.com/James-Yu/LaTeX-Workshop",

src/preview.ts

@@ -244,7 +244,8 @@ function parseSyncTex(out: string) {
 }
 
 export function getPreviewPosition() {
-    client.send(JSON.stringify({type:"get_position"}));
+    if (client != undefined)
+        client.send(JSON.stringify({type:"get_position"}));
 }
 
 export class previewProvider implements vscode.TextDocumentContentProvider {