use webpack.sourcemapdevtoolplugin for reliable sourcemaps

terminus-ssh/webpack.config.js

@@ -1,9 +1,9 @@
 const path = require('path')
+const webpack = require('webpack')
 
 module.exports = {
     target: 'node',
     entry: 'src/index.ts',
-    devtool: 'source-map',
     context: __dirname,
     output: {
         path: path.resolve(__dirname, 'dist'),
@@ -54,5 +54,12 @@ module.exports = {
         /^@angular/,
         /^@ng-bootstrap/,
         /^terminus-/,
-    ]
+    ],
+    plugins: [
+        new webpack.optimize.ModuleConcatenationPlugin(),
+        new webpack.SourceMapDevToolPlugin({
+            exclude: [/node_modules/, /vendor/],
+            filename: '[file].map',
+        }),
+    ],
 }