Add a mock Overtype while we wait to merge.

Author: ntwigg

browser-extension/src/overtype/mock-overtype.ts

@@ -0,0 +1,44 @@
+/**
+ * Mock implementation of Overtype for development
+ * This wraps a textarea and provides a minimal interface
+ */
+export class OverType {
+  public element: HTMLTextAreaElement
+  public instanceId: number
+  public initialized: boolean = true
+
+  private static instanceCount = 0
+
+  constructor(target: HTMLTextAreaElement) {
+    this.element = target
+    this.instanceId = ++OverType.instanceCount
+
+    // Store reference on the element
+    ;(target as any).overTypeInstance = this
+
+    // Apply basic styling or enhancement
+    this.enhance()
+  }
+
+  private enhance(): void {
+    // Mock enhancement - could add basic styling, event handlers, etc.
+    this.element.style.fontFamily =
+      'Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace'
+    this.element.style.fontSize = '14px'
+    this.element.style.lineHeight = '1.5'
+  }
+
+  getValue(): string {
+    return this.element.value
+  }
+
+  setValue(value: string): void {
+    this.element.value = value
+  }
+
+  destroy(): void {
+    // Clean up any enhancements
+    delete (this.element as any).overTypeInstance
+    this.initialized = false
+  }
+}