Convert dispatchEvent to switch

extensions/typescript/src/typescriptServiceClient.ts

@@ -730,35 +730,52 @@ export default class TypeScriptServiceClient implements ITypescriptServiceClient
 	}
 
 	private dispatchEvent(event: Proto.Event) {
-		if (event.event === 'syntaxDiag') {
+		switch (event.event) {
+			case 'syntaxDiag':
 				this.host.syntaxDiagnosticsReceived(event as Proto.DiagnosticEvent);
-		} else if (event.event === 'semanticDiag') {
+				break;
+
+			case 'semanticDiag':
 				this.host.semanticDiagnosticsReceived(event as Proto.DiagnosticEvent);
-		} else if (event.event === 'configFileDiag') {
+				break;
+
+			case 'configFileDiag':
 				this.host.configFileDiagnosticsReceived(event as Proto.ConfigFileDiagnosticEvent);
-		} else if (event.event === 'telemetry') {
+				break;
+
+			case 'telemetry':
 				const telemetryData = (event as Proto.TelemetryEvent).body;
 				this.dispatchTelemetryEvent(telemetryData);
-		} else if (event.event === 'projectLanguageServiceState') {
+				break;
+
+			case 'projectLanguageServiceState':
+				if (event.body) {
 					const data = (event as Proto.ProjectLanguageServiceStateEvent).body;
-			if (data) {
+
 					this._onProjectLanguageServiceStateChanged.fire(data);
 				}
-		} else if (event.event === 'beginInstallTypes') {
+				break;
+
+			case 'beginInstallTypes':
+				if (event.body) {
 					const data = (event as Proto.BeginInstallTypesEvent).body;
-			if (data) {
 					this._onDidBeginInstallTypings.fire(data);
 				}
-		} else if (event.event === 'endInstallTypes') {
+				break;
+
+			case 'endInstallTypes':
+				if (event.body) {
 					const data = (event as Proto.EndInstallTypesEvent).body;
-			if (data) {
 					this._onDidEndInstallTypings.fire(data);
 				}
-		} else if (event.event === 'typesInstallerInitializationFailed') {
+				break;
+
+			case 'typesInstallerInitializationFailed':
+				if (event.body) {
 					const data = (event as Proto.TypesInstallerInitializationFailedEvent).body;
-			if (data) {
 					this._onTypesInstallerInitializationFailed.fire(data);
 				}
+				break;
 		}
 	}