v3.16.0

changelog.md

@@ -1,5 +1,32 @@
 # Changelog
 
+## 2025-12-30 - 3.16.0 - feat(editor)
+improve TypeScript IntelliSense and module resolution for Monaco editor
+
+- Add file cache (fileCache) and getFileContent() for synchronous access to project files
+- Track and dispose Monaco extra libs (addedExtraLibs) and register project files via addExtraLib to enable TypeScript module resolution
+- Add addFileAsExtraLib logic to register .ts/.tsx files also under .js/.jsx paths so ESM imports resolve to TypeScript sources
+- Use ModuleResolutionKind.Bundler fallback to NodeJs and set compilerOptions (baseUrl '/', allowImportingTsExtensions, resolveJsonModule) to improve resolution
+- Adapt executionEnvironment API usage to readDir/readFile and check entry.type ('directory'|'file') instead of isDirectory/isFile
+- Add a debugging/screenshot asset: .playwright-mcp/module-resolution-fixed.png
+
+## 2025-12-30 - 3.15.0 - feat(editor)
+enable file-backed Monaco models and add Problems panel; lazy-init project TypeScript IntelliSense
+
+- dees-editor-monaco: add `filePath` property and create/get Monaco models with file:// URIs so editors are backed by real models; sync content into models and handle model switching when filePath changes; enable hover config and improved lifecycle handling.
+- dees-editor-workspace: add bottom 'Problems' panel and panel tabs (terminal/problems), diagnosticMarkers state, marker listener, UI for problem list, and navigation to file/position when a problem is clicked; initialize IntelliSense lazily when a file is opened.
+- typescript-intellisense: index project .ts/.js files from the virtual filesystem into Monaco models for cross-file resolution, enable allowNonTsExtensions and set eager model sync so TypeScript processes models eagerly.
+- General: improved handling for language changes, model language switching, and deferred initialization of the IntelliSense manager.
+- Add Playwright test images (workspace screenshots) used by CI/tests.
+
+## 2025-12-30 - 3.14.2 - fix(editor)
+bump monaco-editor to 0.55.1 and adapt TypeScript intellisense integration to the updated Monaco API
+
+- Bumped dependency monaco-editor from 0.52.2 to 0.55.1 in package.json.
+- Generated MONACO_VERSION module updated to 0.55.1 and moved target to ts_web/elements/00group-editor/dees-editor-monaco/version.ts.
+- Refactored TypeScript IntelliSense code to use a typed Monaco TS API (added IMonacoTypeScriptAPI, tsApi getter, and replaced direct monaco.languages.typescript.* calls).
+- Added test/workspace screenshot .playwright-mcp/workspace-test.png (binary asset).
+
 ## 2025-12-30 - 3.14.1 - fix(build)
 bump @webcontainer/api and enable skipLibCheck to avoid type-check conflicts
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@design.estate/dees-catalog",
-  "version": "3.14.1",
+  "version": "3.16.0",
   "private": false,
   "description": "A comprehensive library that provides dynamic web components for building sophisticated and modern web applications using JavaScript and TypeScript.",
   "main": "dist_ts_web/index.js",
@@ -38,7 +38,7 @@
     "ibantools": "^4.5.1",
     "lit": "^3.3.1",
     "lucide": "^0.562.0",
-    "monaco-editor": "0.52.2",
+    "monaco-editor": "0.55.1",
     "pdfjs-dist": "^4.10.38",
     "xterm": "^5.3.0",
     "xterm-addon-fit": "^0.8.0"

pnpm-lock.yaml

@@ -75,8 +75,8 @@ importers:
         specifier: ^0.562.0
         version: 0.562.0
       monaco-editor:
-        specifier: 0.52.2
-        version: 0.52.2
+        specifier: 0.55.1
+        version: 0.55.1
       pdfjs-dist:
         specifier: ^4.10.38
         version: 4.10.38
@@ -2152,6 +2152,9 @@ packages:
     resolution: {integrity: sha512-l4gcSouhcgIKRvyy99RNVOgxXiicE+2jZoNmaNmZ6JXiGajBOJAesk1OBlJuM5k2c+eudGdLxDqXuPCKIj6kpw==}
     engines: {node: '>=6'}
 
+  dompurify@3.2.7:
+    resolution: {integrity: sha512-WhL/YuveyGXJaerVlMYGWhvQswa7myDG17P7Vu65EWC05o8vfeNbvNf4d/BOvH99+ZW+LlQsc1GDKMa1vNK6dw==}
+
   dunder-proto@1.0.1:
     resolution: {integrity: sha512-KIN/nDJBQRcXw0MLVhZE9iQHmG68qAVIBg9CqmUYjmQIhgij9U5MFvrqkUL5FbtyyzZuOeOt0zdeRe4UY7ct+A==}
     engines: {node: '>= 0.4'}
@@ -2774,6 +2777,11 @@ packages:
   markdown-table@3.0.4:
     resolution: {integrity: sha512-wiYz4+JrLyb/DqW2hkFJxP7Vd7JuTDm77fvbM8VfEQdmSMqcImWeeRbHwZjBjIFki/VaMK2BhFi7oUUZeM5bqw==}
 
+  marked@14.0.0:
+    resolution: {integrity: sha512-uIj4+faQ+MgHgwUW1l2PsPglZLOLOT1uErt06dAPtx2kjteLAkbsd/0FiYg/MGS+i7ZKLb7w2WClxHkzOOuryQ==}
+    engines: {node: '>= 18'}
+    hasBin: true
+
   matcher@5.0.0:
     resolution: {integrity: sha512-s2EMBOWtXFc8dgqvoAzKJXxNHibcdJMV0gwqKUaw9E2JBJuGUK7DrNKrA6g/i+v72TT16+6sVm5mS3thaMLQUw==}
     engines: {node: ^12.20.0 || ^14.13.1 || >=16.0.0}
@@ -2984,6 +2992,9 @@ packages:
   monaco-editor@0.52.2:
     resolution: {integrity: sha512-GEQWEZmfkOGLdd3XK8ryrfWz3AIP8YymVXiPHEdewrUq7mh0qrKrfHLNCXcbB6sTnMLnOZ3ztSiKcciFUkIJwQ==}
 
+  monaco-editor@0.55.1:
+    resolution: {integrity: sha512-jz4x+TJNFHwHtwuV9vA9rMujcZRb0CEilTEwG2rRSpe/A7Jdkuj8xPKttCgOh+v/lkHy7HsZ64oj+q3xoAFl9A==}
+
   mongodb-connection-string-url@3.0.2:
     resolution: {integrity: sha512-rMO7CGo/9BFwyZABcKAWL8UJwH/Kc2x0g72uhDWzG48URRax5TCIcJ7Rc3RZqffZzO/Gwff/jyKwCU9TN8gehA==}
 
@@ -7173,6 +7184,10 @@ snapshots:
     dependencies:
       '@leichtgewicht/ip-codec': 2.0.5
 
+  dompurify@3.2.7:
+    optionalDependencies:
+      '@types/trusted-types': 2.0.7
+
   dunder-proto@1.0.1:
     dependencies:
       call-bind-apply-helpers: 1.0.2
@@ -7892,6 +7907,8 @@ snapshots:
 
   markdown-table@3.0.4: {}
 
+  marked@14.0.0: {}
+
   matcher@5.0.0:
     dependencies:
       escape-string-regexp: 5.0.0
@@ -8273,6 +8290,11 @@ snapshots:
 
   monaco-editor@0.52.2: {}
 
+  monaco-editor@0.55.1:
+    dependencies:
+      dompurify: 3.2.7
+      marked: 14.0.0
+
   mongodb-connection-string-url@3.0.2:
     dependencies:
       '@types/whatwg-url': 11.0.5

scripts/update-monaco-version.cjs

@@ -26,7 +26,7 @@ function getMonacoVersion() {
 }
 
 function writeVersionModule(version) {
-  const targetDir = path.join(projectRoot, 'ts_web', 'elements', 'dees-editor');
+  const targetDir = path.join(projectRoot, 'ts_web', 'elements', '00group-editor', 'dees-editor-monaco');
   fs.mkdirSync(targetDir, { recursive: true });
   const targetFile = path.join(targetDir, 'version.ts');
   const fileContent = `// Auto-generated by scripts/update-monaco-version.cjs\nexport const MONACO_VERSION = '${version}';\n`;

ts_web/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@design.estate/dees-catalog',
-  version: '3.14.1',
+  version: '3.16.0',
   description: 'A comprehensive library that provides dynamic web components for building sophisticated and modern web applications using JavaScript and TypeScript.'
 }

ts_web/elements/00group-editor/dees-editor-monaco/dees-editor-monaco.ts

@@ -40,6 +40,11 @@ export class DeesEditorMonaco extends DeesElement {
   })
   accessor language = 'typescript';
 
+  @property({
+    type: String
+  })
+  accessor filePath: string = '';
+
   @property({
     type: Object
   })
@@ -114,14 +119,35 @@ export class DeesEditorMonaco extends DeesElement {
       const isBright = domtoolsInstance.themeManager.goBrightBoolean;
       const initialTheme = isBright ? 'vs' : 'vs-dark';
 
-      const editor = ((window as any).monaco.editor as typeof monaco.editor).create(container, {
-        value: this.content,
-        language: this.language,
+      const monacoInstance = (window as any).monaco as typeof monaco;
+
+      // Create or get model with proper file URI for TypeScript IntelliSense
+      let model: monaco.editor.ITextModel | null = null;
+      if (this.filePath) {
+        const uri = monacoInstance.Uri.parse(`file://${this.filePath}`);
+        model = monacoInstance.editor.getModel(uri);
+        if (!model) {
+          model = monacoInstance.editor.createModel(this.content, this.language, uri);
+        } else {
+          model.setValue(this.content);
+        }
+      }
+
+      const editor = (monacoInstance.editor as typeof monaco.editor).create(container, {
+        model: model || undefined,
+        value: model ? undefined : this.content,
+        language: model ? undefined : this.language,
         theme: initialTheme,
         useShadowDOM: true,
         fontSize: 16,
         automaticLayout: true,
-        wordWrap: this.wordWrap
+        wordWrap: this.wordWrap,
+        hover: {
+          enabled: true,
+          delay: 300,
+          sticky: true,
+          above: false,
+        },
       });
 
       // Subscribe to theme changes
@@ -160,7 +186,35 @@ export class DeesEditorMonaco extends DeesElement {
   public async updated(changedProperties: Map<string, any>): Promise<void> {
     super.updated(changedProperties);
 
-    // Handle content changes
+    const monacoInstance = (window as any).monaco as typeof monaco;
+    if (!monacoInstance) return;
+
+    // Handle filePath changes - switch to different model
+    if (changedProperties.has('filePath') && this.filePath) {
+      const editor = await this.editorDeferred.promise;
+      const uri = monacoInstance.Uri.parse(`file://${this.filePath}`);
+      let model = monacoInstance.editor.getModel(uri);
+
+      if (!model) {
+        model = monacoInstance.editor.createModel(this.content, this.language, uri);
+      } else {
+        // Update model content if different
+        if (model.getValue() !== this.content) {
+          this.isUpdatingFromExternal = true;
+          model.setValue(this.content);
+          this.isUpdatingFromExternal = false;
+        }
+      }
+
+      // Switch editor to use this model
+      const currentModel = editor.getModel();
+      if (currentModel?.uri.toString() !== uri.toString()) {
+        editor.setModel(model);
+      }
+      return; // filePath change handles content too
+    }
+
+    // Handle content changes (when no filePath or filePath unchanged)
     if (changedProperties.has('content')) {
       const editor = await this.editorDeferred.promise;
       const currentValue = editor.getValue();
@@ -176,10 +230,7 @@ export class DeesEditorMonaco extends DeesElement {
       const editor = await this.editorDeferred.promise;
       const model = editor.getModel();
       if (model) {
-        const monacoInstance = (window as any).monaco;
-        if (monacoInstance) {
-          monacoInstance.editor.setModelLanguage(model, this.language);
-        }
+        monacoInstance.editor.setModelLanguage(model, this.language);
       }
     }
   }

ts_web/elements/00group-editor/dees-editor-monaco/version.ts

@@ -1,2 +1,2 @@
 // Auto-generated by scripts/update-monaco-version.cjs
-export const MONACO_VERSION = '0.52.2';
+export const MONACO_VERSION = '0.55.1';

ts_web/elements/00group-editor/dees-editor-workspace/dees-editor-workspace.ts

@@ -178,9 +178,25 @@ export function createUser(firstName: string, lastName: string): IUser {
   @state()
   accessor isInitializing: boolean = true;
 
+  @state()
+  accessor activeBottomPanel: 'terminal' | 'problems' = 'terminal';
+
+  @state()
+  accessor diagnosticMarkers: Array<{
+    message: string;
+    severity: number;
+    startLineNumber: number;
+    startColumn: number;
+    endLineNumber: number;
+    endColumn: number;
+    source?: string;
+    resource: { path: string };
+  }> = [];
+
   private editorElement: DeesEditorMonaco | null = null;
   private initializationStarted: boolean = false;
   private intelliSenseManager: TypeScriptIntelliSenseManager | null = null;
+  private intelliSenseInitialized: boolean = false;
 
   public static styles = [
     themeDefaultStyles,
@@ -387,6 +403,127 @@ export function createUser(firstName: string, lastName: string): IUser {
         bottom: 0;
       }
 
+      .problems-content {
+        position: absolute;
+        top: 32px;
+        left: 0;
+        right: 0;
+        bottom: 0;
+        overflow-y: auto;
+        background: ${cssManager.bdTheme('hsl(0 0% 100%)', 'hsl(0 0% 9%)')};
+      }
+
+      .panel-tabs {
+        display: flex;
+        align-items: center;
+        gap: 0;
+      }
+
+      .panel-tab {
+        display: flex;
+        align-items: center;
+        gap: 6px;
+        padding: 0 12px;
+        height: 32px;
+        cursor: pointer;
+        font-size: 12px;
+        font-weight: 500;
+        color: ${cssManager.bdTheme('hsl(0 0% 50%)', 'hsl(0 0% 55%)')};
+        border-bottom: 2px solid transparent;
+        transition: all 0.15s ease;
+      }
+
+      .panel-tab:hover {
+        color: ${cssManager.bdTheme('hsl(0 0% 30%)', 'hsl(0 0% 75%)')};
+        background: ${cssManager.bdTheme('hsl(0 0% 90%)', 'hsl(0 0% 12%)')};
+      }
+
+      .panel-tab.active {
+        color: ${cssManager.bdTheme('hsl(0 0% 20%)', 'hsl(0 0% 90%)')};
+        border-bottom-color: ${cssManager.bdTheme('hsl(210 100% 50%)', 'hsl(210 100% 60%)')};
+      }
+
+      .panel-tab-badge {
+        display: inline-flex;
+        align-items: center;
+        justify-content: center;
+        min-width: 18px;
+        height: 18px;
+        padding: 0 5px;
+        border-radius: 9px;
+        font-size: 11px;
+        font-weight: 600;
+        background: ${cssManager.bdTheme('hsl(0 70% 50%)', 'hsl(0 70% 45%)')};
+        color: white;
+      }
+
+      .panel-tab-badge.warning {
+        background: ${cssManager.bdTheme('hsl(40 70% 50%)', 'hsl(40 70% 45%)')};
+      }
+
+      .panel-tab-badge.none {
+        display: none;
+      }
+
+      .problems-list {
+        padding: 4px 0;
+      }
+
+      .problem-item {
+        display: flex;
+        align-items: flex-start;
+        gap: 8px;
+        padding: 6px 12px;
+        cursor: pointer;
+        font-size: 12px;
+        line-height: 1.4;
+        color: ${cssManager.bdTheme('hsl(0 0% 30%)', 'hsl(0 0% 80%)')};
+        transition: background 0.1s ease;
+      }
+
+      .problem-item:hover {
+        background: ${cssManager.bdTheme('hsl(0 0% 95%)', 'hsl(0 0% 15%)')};
+      }
+
+      .problem-icon {
+        flex-shrink: 0;
+        margin-top: 2px;
+      }
+
+      .problem-icon.error {
+        color: ${cssManager.bdTheme('hsl(0 70% 50%)', 'hsl(0 70% 60%)')};
+      }
+
+      .problem-icon.warning {
+        color: ${cssManager.bdTheme('hsl(40 70% 50%)', 'hsl(40 70% 60%)')};
+      }
+
+      .problem-details {
+        flex: 1;
+        min-width: 0;
+      }
+
+      .problem-message {
+        word-break: break-word;
+      }
+
+      .problem-location {
+        margin-top: 2px;
+        font-size: 11px;
+        color: ${cssManager.bdTheme('hsl(0 0% 50%)', 'hsl(0 0% 55%)')};
+      }
+
+      .problems-empty {
+        display: flex;
+        flex-direction: column;
+        align-items: center;
+        justify-content: center;
+        height: 100%;
+        color: ${cssManager.bdTheme('hsl(0 0% 55%)', 'hsl(0 0% 50%)')};
+        font-size: 13px;
+        gap: 8px;
+      }
+
       .empty-state {
         display: flex;
         flex-direction: column;
@@ -495,6 +632,7 @@ export function createUser(firstName: string, lastName: string): IUser {
               </div>
             ` : html`
               <dees-editor-monaco
+                .filePath=${this.activeFilePath}
                 .content=${this.getActiveFileContent()}
                 .language=${this.getLanguageFromPath(this.activeFilePath)}
                 @content-change=${this.handleContentChange}
@@ -509,9 +647,24 @@ export function createUser(firstName: string, lastName: string): IUser {
             style="height: ${this.isTerminalCollapsed ? 32 : this.terminalHeight}px"
           >
             <div class="panel-header">
-              <div class="panel-header-title">
-                <dees-icon .icon=${'lucide:terminal'} iconSize="14"></dees-icon>
-                Terminal
+              <div class="panel-tabs">
+                <div
+                  class="panel-tab ${this.activeBottomPanel === 'terminal' ? 'active' : ''}"
+                  @click=${() => this.activeBottomPanel = 'terminal'}
+                >
+                  <dees-icon .icon=${'lucide:terminal'} iconSize="14"></dees-icon>
+                  Terminal
+                </div>
+                <div
+                  class="panel-tab ${this.activeBottomPanel === 'problems' ? 'active' : ''}"
+                  @click=${() => this.activeBottomPanel = 'problems'}
+                >
+                  <dees-icon .icon=${'lucide:circleAlert'} iconSize="14"></dees-icon>
+                  Problems
+                  ${this.diagnosticMarkers.length > 0 ? html`
+                    <span class="panel-tab-badge ${this.getErrorCount() === 0 ? 'warning' : ''}">${this.diagnosticMarkers.length}</span>
+                  ` : ''}
+                </div>
               </div>
               <div class="panel-header-actions">
                 <div class="panel-action" @click=${this.toggleTerminal}>
@@ -522,12 +675,15 @@ export function createUser(firstName: string, lastName: string): IUser {
                 </div>
               </div>
             </div>
-            <div class="terminal-content">
+            <div class="terminal-content" style="display: ${this.activeBottomPanel === 'terminal' ? 'block' : 'none'}">
               <dees-terminal
                 .executionEnvironment=${this.executionEnvironment}
                 .setupCommand=${''}
               ></dees-terminal>
             </div>
+            <div class="problems-content" style="display: ${this.activeBottomPanel === 'problems' ? 'block' : 'none'}">
+              ${this.renderProblemsPanel()}
+            </div>
           </div>
         ` : ''}
       </div>
@@ -562,8 +718,7 @@ export function createUser(firstName: string, lastName: string): IUser {
       } else if (!this.executionEnvironment.ready) {
         await this.executionEnvironment.init();
       }
-      // Initialize IntelliSense after workspace is ready
-      await this.initializeIntelliSense();
+      // IntelliSense is initialized lazily when first file is opened (Monaco loads on demand)
     } catch (error) {
       console.error('Failed to initialize workspace:', error);
       // Reset flag to allow retry
@@ -575,16 +730,27 @@ export function createUser(firstName: string, lastName: string): IUser {
 
   private async initializeIntelliSense(): Promise<void> {
     if (!this.executionEnvironment) return;
+    if (this.intelliSenseInitialized) return;
 
-    // Wait for Monaco to be available globally
-    const monacoInstance = (window as any).monaco;
+    // Wait for Monaco to be available globally (with retry for timing)
+    let monacoInstance = (window as any).monaco;
     if (!monacoInstance) {
-      console.warn('Monaco not loaded, IntelliSense disabled');
+      // Monaco loads asynchronously when the editor mounts, wait a bit
+      await new Promise(resolve => setTimeout(resolve, 100));
+      monacoInstance = (window as any).monaco;
+    }
+
+    if (!monacoInstance) {
+      console.warn('Monaco not yet loaded, IntelliSense will be initialized later');
       return;
     }
 
+    this.intelliSenseInitialized = true;
     this.intelliSenseManager = new TypeScriptIntelliSenseManager();
     await this.intelliSenseManager.init(monacoInstance, this.executionEnvironment);
+
+    // Set up marker listener for Problems panel
+    this.setupMarkerListener();
   }
 
   private async handleFileSelect(e: CustomEvent<{ path: string; name: string }>) {
@@ -610,6 +776,21 @@ export function createUser(firstName: string, lastName: string): IUser {
         { path, name, content, modified: false },
       ];
       this.activeFilePath = path;
+
+      // Initialize IntelliSense lazily after first file opens (Monaco loads on demand)
+      if (!this.intelliSenseInitialized) {
+        // Wait for Monaco editor to mount and load Monaco from CDN
+        await this.updateComplete;
+        // Give Monaco time to load via require.js
+        await new Promise(resolve => setTimeout(resolve, 500));
+        await this.initializeIntelliSense();
+
+        // Process the initial file content for IntelliSense
+        const language = this.getLanguageFromPath(path);
+        if (this.intelliSenseManager && (language === 'typescript' || language === 'javascript')) {
+          await this.intelliSenseManager.processContentChange(content);
+        }
+      }
     } catch (error) {
       console.error(`Failed to open file ${path}:`, error);
     }
@@ -699,6 +880,103 @@ export function createUser(firstName: string, lastName: string): IUser {
     this.isTerminalCollapsed = !this.isTerminalCollapsed;
   }
 
+  private getErrorCount(): number {
+    // Monaco MarkerSeverity: Error = 8, Warning = 4, Info = 2, Hint = 1
+    return this.diagnosticMarkers.filter(m => m.severity === 8).length;
+  }
+
+  private renderProblemsPanel(): TemplateResult {
+    if (this.diagnosticMarkers.length === 0) {
+      return html`
+        <div class="problems-empty">
+          <dees-icon .icon=${'lucide:checkCircle'} iconSize="24"></dees-icon>
+          <span>No problems detected</span>
+        </div>
+      `;
+    }
+
+    return html`
+      <div class="problems-list">
+        ${this.diagnosticMarkers.map(marker => html`
+          <div class="problem-item" @click=${() => this.navigateToProblem(marker)}>
+            <dees-icon
+              class="problem-icon ${marker.severity === 8 ? 'error' : 'warning'}"
+              .icon=${marker.severity === 8 ? 'lucide:circleX' : 'lucide:triangleAlert'}
+              iconSize="14"
+            ></dees-icon>
+            <div class="problem-details">
+              <div class="problem-message">${marker.message}</div>
+              <div class="problem-location">
+                ${marker.resource.path.split('/').pop()} (${marker.startLineNumber}, ${marker.startColumn})
+                ${marker.source ? `[${marker.source}]` : ''}
+              </div>
+            </div>
+          </div>
+        `)}
+      </div>
+    `;
+  }
+
+  private async navigateToProblem(marker: typeof this.diagnosticMarkers[0]) {
+    // Extract file path from resource
+    const filePath = marker.resource.path;
+    const fileName = filePath.split('/').pop() || '';
+
+    // Open the file if not already open
+    const existingFile = this.openFiles.find(f => f.path === filePath);
+    if (!existingFile) {
+      await this.openFile(filePath, fileName);
+    } else {
+      this.activeFilePath = filePath;
+    }
+
+    // Wait for editor to be ready, then navigate to the line
+    await this.updateComplete;
+    const editorElement = this.shadowRoot?.querySelector('dees-editor-monaco') as DeesEditorMonaco;
+    if (editorElement) {
+      const editor = await editorElement.editorDeferred.promise;
+      editor.revealLineInCenter(marker.startLineNumber);
+      editor.setPosition({
+        lineNumber: marker.startLineNumber,
+        column: marker.startColumn,
+      });
+      editor.focus();
+    }
+  }
+
+  private setupMarkerListener() {
+    const monacoInstance = (window as any).monaco;
+    if (!monacoInstance) return;
+
+    // Listen for marker changes
+    monacoInstance.editor.onDidChangeMarkers((uris: any[]) => {
+      this.updateDiagnosticMarkers();
+    });
+
+    // Initial load
+    this.updateDiagnosticMarkers();
+  }
+
+  private updateDiagnosticMarkers() {
+    const monacoInstance = (window as any).monaco;
+    if (!monacoInstance) return;
+
+    // Get all markers from Monaco
+    const allMarkers = monacoInstance.editor.getModelMarkers({});
+
+    // Transform to our format
+    this.diagnosticMarkers = allMarkers.map((m: any) => ({
+      message: m.message,
+      severity: m.severity,
+      startLineNumber: m.startLineNumber,
+      startColumn: m.startColumn,
+      endLineNumber: m.endLineNumber,
+      endColumn: m.endColumn,
+      source: m.source,
+      resource: { path: m.resource.path },
+    }));
+  }
+
   public async saveActiveFile(): Promise<void> {
     const file = this.openFiles.find(f => f.path === this.activeFilePath);
     if (!file || !this.executionEnvironment) return;

ts_web/elements/00group-editor/dees-editor-workspace/typescript-intellisense.ts

@@ -1,6 +1,23 @@
 import type * as monaco from 'monaco-editor';
 import type { IExecutionEnvironment } from '../../00group-runtime/index.js';
 
+// Monaco TypeScript API types (runtime API still exists, types deprecated in 0.55+)
+interface IExtraLibDisposable {
+  dispose(): void;
+}
+
+interface IMonacoTypeScriptAPI {
+  typescriptDefaults: {
+    setCompilerOptions(options: Record<string, unknown>): void;
+    setDiagnosticsOptions(options: Record<string, unknown>): void;
+    addExtraLib(content: string, filePath?: string): IExtraLibDisposable;
+    setEagerModelSync(value: boolean): void;
+  };
+  ScriptTarget: { ES2020: number };
+  ModuleKind: { ESNext: number };
+  ModuleResolutionKind: { NodeJs: number; Bundler?: number };
+}
+
 /**
  * Manages TypeScript IntelliSense by loading type definitions
  * from the virtual filesystem into Monaco.
@@ -10,6 +27,20 @@ export class TypeScriptIntelliSenseManager {
   private monacoInstance: typeof monaco | null = null;
   private executionEnvironment: IExecutionEnvironment | null = null;
 
+  // Cache of file contents for synchronous access and module resolution
+  private fileCache: Map<string, string> = new Map();
+
+  // Track extra libs added for cleanup
+  private addedExtraLibs: Map<string, IExtraLibDisposable> = new Map();
+
+  /**
+   * Get TypeScript API with proper typing for Monaco 0.55+
+   */
+  private get tsApi(): IMonacoTypeScriptAPI | null {
+    if (!this.monacoInstance) return null;
+    return (this.monacoInstance.languages as any).typescript as IMonacoTypeScriptAPI;
+  }
+
   /**
    * Initialize with Monaco and execution environment
    */
@@ -20,28 +51,85 @@ export class TypeScriptIntelliSenseManager {
     this.monacoInstance = monacoInst;
     this.executionEnvironment = env;
     this.configureCompilerOptions();
+    // Load all project TypeScript/JavaScript files into Monaco for cross-file resolution
+    await this.loadAllProjectFiles();
+  }
+
+  /**
+   * Recursively load all .ts/.js files from the virtual filesystem into Monaco
+   */
+  private async loadAllProjectFiles(): Promise<void> {
+    if (!this.executionEnvironment) return;
+    await this.loadFilesFromDirectory('/');
+  }
+
+  /**
+   * Recursively load files from a directory
+   */
+  private async loadFilesFromDirectory(dirPath: string): Promise<void> {
+    if (!this.executionEnvironment) return;
+
+    try {
+      const entries = await this.executionEnvironment.readDir(dirPath);
+
+      for (const entry of entries) {
+        const fullPath = dirPath === '/' ? `/${entry.name}` : `${dirPath}/${entry.name}`;
+
+        // Skip node_modules - too large and handled separately via addExtraLib
+        if (entry.name === 'node_modules') continue;
+
+        if (entry.type === 'directory') {
+          await this.loadFilesFromDirectory(fullPath);
+        } else if (entry.type === 'file') {
+          const ext = entry.name.split('.').pop()?.toLowerCase();
+          if (ext === 'ts' || ext === 'tsx' || ext === 'js' || ext === 'jsx') {
+            try {
+              const content = await this.executionEnvironment.readFile(fullPath);
+              this.addFileModel(fullPath, content);
+            } catch {
+              // Ignore files that can't be read
+            }
+          }
+        }
+      }
+    } catch {
+      // Directory might not exist or not be readable
+    }
   }
 
   private configureCompilerOptions(): void {
-    if (!this.monacoInstance) return;
+    const ts = this.tsApi;
+    if (!ts) return;
 
-    this.monacoInstance.languages.typescript.typescriptDefaults.setCompilerOptions({
-      target: this.monacoInstance.languages.typescript.ScriptTarget.ES2020,
-      module: this.monacoInstance.languages.typescript.ModuleKind.ESNext,
-      moduleResolution: this.monacoInstance.languages.typescript.ModuleResolutionKind.NodeJs,
+    ts.typescriptDefaults.setCompilerOptions({
+      target: ts.ScriptTarget.ES2020,
+      module: ts.ModuleKind.ESNext,
+      // Use Bundler resolution if available (Monaco 0.45+), fallback to NodeJs
+      moduleResolution: ts.ModuleResolutionKind.Bundler ?? ts.ModuleResolutionKind.NodeJs,
       allowSyntheticDefaultImports: true,
       esModuleInterop: true,
       strict: true,
       noEmit: true,
       allowJs: true,
       checkJs: false,
+      allowNonTsExtensions: true,
       lib: ['es2020', 'dom', 'dom.iterable'],
+      // Set baseUrl to root for resolving absolute imports
+      baseUrl: '/',
+      // Allow importing .ts extensions directly (useful for some setups)
+      allowImportingTsExtensions: true,
+      // Resolve JSON modules
+      resolveJsonModule: true,
     });
 
-    this.monacoInstance.languages.typescript.typescriptDefaults.setDiagnosticsOptions({
+    ts.typescriptDefaults.setDiagnosticsOptions({
       noSemanticValidation: false,
       noSyntaxValidation: false,
     });
+
+    // Enable eager model sync so TypeScript immediately processes all models
+    // This is critical for cross-file IntelliSense to work without requiring edits
+    ts.typescriptDefaults.setEagerModelSync(true);
   }
 
   /**
@@ -99,7 +187,8 @@ export class TypeScriptIntelliSenseManager {
   }
 
   private async tryLoadPackageTypes(packageName: string): Promise<boolean> {
-    if (!this.executionEnvironment || !this.monacoInstance) return false;
+    const ts = this.tsApi;
+    if (!this.executionEnvironment || !ts) return false;
 
     const basePath = `/node_modules/${packageName}`;
 
@@ -116,7 +205,7 @@ export class TypeScriptIntelliSenseManager {
           const fullTypesPath = `${basePath}/${typesPath}`;
           if (await this.executionEnvironment.exists(fullTypesPath)) {
             const content = await this.executionEnvironment.readFile(fullTypesPath);
-            this.monacoInstance.languages.typescript.typescriptDefaults.addExtraLib(
+            ts.typescriptDefaults.addExtraLib(
               content,
               `file://${fullTypesPath}`
             );
@@ -135,7 +224,7 @@ export class TypeScriptIntelliSenseManager {
       for (const dtsPath of commonPaths) {
         if (await this.executionEnvironment.exists(dtsPath)) {
           const content = await this.executionEnvironment.readFile(dtsPath);
-          this.monacoInstance.languages.typescript.typescriptDefaults.addExtraLib(
+          ts.typescriptDefaults.addExtraLib(
             content,
             `file://${dtsPath}`
           );
@@ -150,7 +239,8 @@ export class TypeScriptIntelliSenseManager {
   }
 
   private async tryLoadAtTypesPackage(packageName: string): Promise<boolean> {
-    if (!this.executionEnvironment || !this.monacoInstance) return false;
+    const ts = this.tsApi;
+    if (!this.executionEnvironment || !ts) return false;
 
     // Handle scoped packages: @scope/package -> @types/scope__package
     const typesPackageName = packageName.startsWith('@')
@@ -163,7 +253,7 @@ export class TypeScriptIntelliSenseManager {
       const indexPath = `${basePath}/index.d.ts`;
       if (await this.executionEnvironment.exists(indexPath)) {
         const content = await this.executionEnvironment.readFile(indexPath);
-        this.monacoInstance.languages.typescript.typescriptDefaults.addExtraLib(
+        ts.typescriptDefaults.addExtraLib(
           content,
           `file://${indexPath}`
         );
@@ -187,10 +277,15 @@ export class TypeScriptIntelliSenseManager {
 
   /**
    * Add a file model to Monaco for cross-file IntelliSense
+   * Also registers the file with TypeScript via addExtraLib for module resolution
    */
   public addFileModel(path: string, content: string): void {
     if (!this.monacoInstance) return;
 
+    // Cache the content for sync access
+    this.fileCache.set(path, content);
+
+    // Create/update the editor model
     const uri = this.monacoInstance.Uri.parse(`file://${path}`);
     const existingModel = this.monacoInstance.editor.getModel(uri);
 
@@ -200,6 +295,53 @@ export class TypeScriptIntelliSenseManager {
       const language = this.getLanguageFromPath(path);
       this.monacoInstance.editor.createModel(content, language, uri);
     }
+
+    // Also add as extra lib for TypeScript module resolution
+    // This is critical - TypeScript's resolver uses extra libs, not editor models
+    this.addFileAsExtraLib(path, content);
+  }
+
+  /**
+   * Add a file as an extra lib for TypeScript module resolution.
+   * This enables TypeScript to resolve imports to project files.
+   */
+  private addFileAsExtraLib(path: string, content: string): void {
+    const ts = this.tsApi;
+    if (!ts) return;
+
+    // Dispose existing lib if present (for updates)
+    const existing = this.addedExtraLibs.get(path);
+    if (existing) {
+      existing.dispose();
+    }
+
+    // Add the file with its actual path
+    const filePath = `file://${path}`;
+    const disposable = ts.typescriptDefaults.addExtraLib(content, filePath);
+    this.addedExtraLibs.set(path, disposable);
+
+    // For .ts files, also add with .js extension to handle ESM imports
+    // (e.g., import from './utils.js' should resolve to ./utils.ts)
+    if (path.endsWith('.ts') && !path.endsWith('.d.ts')) {
+      const jsPath = path.replace(/\.ts$/, '.js');
+      const jsFilePath = `file://${jsPath}`;
+      const jsDisposable = ts.typescriptDefaults.addExtraLib(content, jsFilePath);
+      this.addedExtraLibs.set(jsPath, jsDisposable);
+      this.fileCache.set(jsPath, content);
+    } else if (path.endsWith('.tsx')) {
+      const jsxPath = path.replace(/\.tsx$/, '.jsx');
+      const jsxFilePath = `file://${jsxPath}`;
+      const jsxDisposable = ts.typescriptDefaults.addExtraLib(content, jsxFilePath);
+      this.addedExtraLibs.set(jsxPath, jsxDisposable);
+      this.fileCache.set(jsxPath, content);
+    }
+  }
+
+  /**
+   * Get cached file content for synchronous access
+   */
+  public getFileContent(path: string): string | undefined {
+    return this.fileCache.get(path);
   }
 
   private getLanguageFromPath(path: string): string {