fix #1103

cypress/e2e/diagramUpdate.spec.ts

@@ -69,6 +69,14 @@ describe('Auto sync tests', () => {
       )
       .should('exist');
   });
+
+  it.only('should update diagram after entire text is removed', () => {
+    // https://github.com/mermaid-js/mermaid-live-editor/issues/1102
+    getEditor().type(`${cmd} a {backspace}`);
+    getEditor().type('graph LR');
+    getEditor().type(' {enter}  A-->Car');
+    cy.get('#view').contains('Car').should('exist');
+  });
 });
 
 describe('Pan and Zoom', () => {

cypress/snapshots.js

@@ -16,7 +16,7 @@ module.exports = {
       "1": "{\"code\":\"graph TD\\n    A[Party] -->|Get money| B(Go shopping!!)\\n    \",\"mermaid\":\"{\\n  \\\"theme\\\": \\\"forest\\\",\\n  \\\"test\\\": \\\"hello world\\\"\\n}\",\"autoSync\":true,\"updateDiagram\":true,\"loader\":{\"type\":\"files\",\"config\":{\"codeURL\":\"https://gist.githubusercontent.com/sidharthv96/6268a23e673a533dcb198f241fd7012a/raw/4eb03887e6a41397e80bdcdbf94017c498f8f1e2/code.mmd\",\"configURL\":\"https://gist.githubusercontent.com/sidharthv96/6268a23e673a533dcb198f241fd7012a/raw/4eb03887e6a41397e80bdcdbf94017c498f8f1e2/config.json\"}}}"
     }
   },
-  "__version": "10.10.0",
+  "__version": "11.2.0",
   "Auto sync tests": {
     "should dim diagram when code is edited": {
       "1": "{\"code\":\"graph TD\\n    A[Christmas] -->|Get money| B(Go shopping)\\n    B --> C{Let me think}\\n    C -->|One| D[Laptop]\\n    C -->|Two| E[iPhone]\\n    C -->|Three| F[fa:fa-car Car]\\n    C --> Test\",\"mermaid\":\"{\\n  \\\"theme\\\": \\\"default\\\"\\n}\",\"autoSync\":false,\"updateDiagram\":false}"

src/lib/util/state.ts

@@ -70,11 +70,11 @@ const processState = async (state: State) => {
     errorDebug();
     console.error(e);
     if ('hash' in e) {
-      const {
-        loc: { first_line, last_line, first_column, last_column }
-        // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
-      } = e.hash as ErrorHash;
       try {
+        const {
+          loc: { first_line, last_line, first_column, last_column }
+          // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
+        } = e.hash as ErrorHash;
         const marker: MarkerData = {
           severity: 8, // Error
           startLineNumber: first_line,