chore(web): json validation with zod

Use the zod library instead of manually written type assertions for
validating json messages from the server. This makes it easier to add
and handle new messages.

1 files changed, 3 insertions, 9 deletions

diff --git a/language-web/src/main/js/xtext/HighlightingService.ts b/language-web/src/main/js/xtext/HighlightingService.ts
index fc3e9e53..dfbb4a19 100644
--- a/language-web/src/main/js/xtext/HighlightingService.ts
+++ b/language-web/src/main/js/xtext/HighlightingService.ts
@@ -1,10 +1,7 @@
 import type { EditorStore } from '../editor/EditorStore';
 import type { IHighlightRange } from '../editor/semanticHighlighting';
 import type { UpdateService } from './UpdateService';
-import { getLogger } from '../utils/logger';
-import { isHighlightingResult } from './xtextServiceResults';
-
-const log = getLogger('xtext.ValidationService');
+import { highlightingResult } from './xtextServiceResults';
 
 export class HighlightingService {
   private readonly store: EditorStore;
@@ -17,13 +14,10 @@ export class HighlightingService {
   }
 
   onPush(push: unknown): void {
-    if (!isHighlightingResult(push)) {
-      log.error('Invalid highlighting result', push);
-      return;
-    }
+    const { regions } = highlightingResult.parse(push);
     const allChanges = this.updateService.computeChangesSinceLastUpdate();
     const ranges: IHighlightRange[] = [];
-    push.regions.forEach(({ offset, length, styleClasses }) => {
+    regions.forEach(({ offset, length, styleClasses }) => {
       if (styleClasses.length === 0) {
         return;
       }