Try loading Electron rather than assume installed

kgryte · kgryte · commit 3f8b9b009a67 · 2017-09-20T22:53:44.000-07:00
diff --git a/lib/node_modules/@stdlib/plot/ctor/lib/view/electron/index.js b/lib/node_modules/@stdlib/plot/ctor/lib/view/electron/index.js
@@ -6,14 +6,20 @@
 
 var debug = require( 'debug' )( 'plot:view:electron:main' );
 var spawn = require( 'child_process' ).spawn;
-var electron = require( 'electron' );
 var path = require( 'path' );
 var toHTML = require( 'vdom-to-html' );
+var instanceOf = require( '@stdlib/assert/instance-of' );
 var ENV = require( '@stdlib/utils/env' );
 var copy = require( '@stdlib/utils/copy' );
 var merge = require( '@stdlib/utils/merge' );
 var readFileSync = require( '@stdlib/fs/read-file' ).sync;
 var httpServer = require( '@stdlib/tools/disposable-http-server' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+
+
+// VARIABLES //
+
+var electron = tryRequire( '@stdlib/electron' );
 
 
 // MAIN //
@@ -24,13 +30,17 @@ var httpServer = require( '@stdlib/tools/disposable-http-server' );
 * @private
 * @param {Plot} plot - plot context
 * @param {VTree} vtree - virtual tree
+* @throws {Error} Electron must be properly installed
 */
 function view( plot, vtree ) {
 	var index;
 	var html;
 	var opts;
 	var css;
 
+	if ( instanceOf( electron, Error ) ) {
+		throw new Error( 'invalid operation. Unable to load Electron. Ensure Electron is installed and try again.' );
+	}
 	debug( 'Transforming virtual DOM tree to HTML...' );
 	html = toHTML( vtree );
 
