feat(mermaid): disable line wrapping by default

src/public/app/types.d.ts

@@ -186,20 +186,28 @@ declare global {
         attach(editor: TextEditor);
     };
 
+    interface CodeMirrorOpts {
+        value: string;
+        viewportMargin: number;
+        indentUnit: number;
+        matchBrackets: boolean;
+        matchTags: { bothTags: boolean };
+        highlightSelectionMatches: {
+            showToken: boolean;
+            annotateScrollbar: boolean;
+        };
+        lineNumbers: boolean;
+        lineWrapping: boolean;
+        keyMap: "vim" | "default";
+        lint: boolean;
+        gutters: string[];
+        tabindex: number;
+        dragDrop: boolean;
+        placeholder: string;
+    }
+
     var CodeMirror: {
-        (el: HTMLElement, opts: {
-            value: string;
-            viewportMargin: number;
-            indentUnit: number;
-            matchBrackets: boolean;
-            matchTags: { bothTags: boolean };
-            highlightSelectionMatches: {
-                showToken: boolean;
-                annotateScrollbar: boolean;
-            };
-            lineNumbers: boolean;
-            lineWrapping: boolean;
-        }): CodeMirrorInstance;
+        (el: HTMLElement, opts: CodeMirrorOpts): CodeMirrorInstance;
         keyMap: {
             default: Record<string, string>;
         };

src/public/app/widgets/type_widgets/abstract_code_type_widget.ts

@@ -64,7 +64,7 @@ export default class AbstractCodeTypeWidget extends TypeWidget {
      *
      * @returns the extra options to be passed to the CodeMirror constructor.
      */
-    getExtraOpts() {
+    getExtraOpts(): Partial<CodeMirrorOpts> {
         return {};
     }
 

src/public/app/widgets/type_widgets/abstract_split_type_widget.ts

@@ -92,6 +92,7 @@ export default abstract class AbstractSplitTypeWidget extends TypeWidget {
         super();
         this.editorTypeWidget = new EditableCodeTypeWidget();
         this.editorTypeWidget.isEnabled = () => true;
+        this.editorTypeWidget.getExtraOpts = this.buildEditorExtraOptions;
     }
 
     doRender(): void {
@@ -139,13 +140,20 @@ export default abstract class AbstractSplitTypeWidget extends TypeWidget {
 
     /**
      * Called upon when the split between the preview and content pane is initialized. Can be used to add additional listeners if needed.
-     *
-     * @returns the additional split options.
      */
     buildSplitExtraOptions(): Split.Options {
         return {};
     }
 
+    /**
+     * Called upon when the code editor is being initialized. Can be used to add additional options to the editor.
+     */
+    buildEditorExtraOptions(): Partial<CodeMirrorOpts> {
+        return {
+            lineWrapping: false
+        };
+    }
+
     setError(message: string | null | undefined) {
         this.$errorContainer.toggleClass("hidden-ext", !message);
         this.$preview.toggleClass("on-error", !!message);

src/public/app/widgets/type_widgets/editable_code.ts

@@ -38,7 +38,7 @@ export default class EditableCodeTypeWidget extends AbstractCodeTypeWidget {
         super.doRender();
     }
 
-    getExtraOpts() {
+    getExtraOpts(): Partial<CodeMirrorOpts> {
         return {
             keyMap: options.is("vimKeymapEnabled") ? "vim" : "default",
             lint: true,