ignore optional dependencies when webpacking

extensions/shared.webpack.config.js

@@ -57,7 +57,9 @@ function withNodeDefaults(/**@type WebpackConfig*/extConfig) {
 			}]
 		},
 		externals: {
-			'vscode': 'commonjs vscode', // ignored because it doesn't exist
+			'vscode': 'commonjs vscode', // ignored because it doesn't exist,
+			'applicationinsights-native-metrics': 'commonjs applicationinsights-native-metrics', // ignored because we don't ship native module
+			'@opentelemetry/tracing': 'commonjs @opentelemetry/tracing' // ignored because we don't ship this module
 		},
 		output: {
 			// all output goes into `dist`.
@@ -112,7 +114,9 @@ function withBrowserDefaults(/**@type WebpackConfig*/extConfig) {
 			}]
 		},
 		externals: {
-			'vscode': 'commonjs vscode', // ignored because it doesn't exist
+			'vscode': 'commonjs vscode', // ignored because it doesn't exist,
+			'applicationinsights-native-metrics': 'commonjs applicationinsights-native-metrics', // ignored because we don't ship native module
+			'@opentelemetry/tracing': 'commonjs @opentelemetry/tracing' // ignored because we don't ship this module
 		},
 		performance: {
 			hints: false