Move to TanStack Start from Next.js (#184)

web/shared/la-editor/extensions/selection/selection.ts

@@ -0,0 +1,36 @@
+import { Extension } from "@tiptap/core"
+import { Plugin, PluginKey } from "@tiptap/pm/state"
+import { Decoration, DecorationSet } from "@tiptap/pm/view"
+
+export const Selection = Extension.create({
+  name: "selection",
+
+  addProseMirrorPlugins() {
+    const { editor } = this
+
+    return [
+      new Plugin({
+        key: new PluginKey("selection"),
+        props: {
+          decorations(state) {
+            if (state.selection.empty) {
+              return null
+            }
+
+            if (editor.isFocused === true) {
+              return null
+            }
+
+            return DecorationSet.create(state.doc, [
+              Decoration.inline(state.selection.from, state.selection.to, {
+                class: "selection",
+              }),
+            ])
+          },
+        },
+      }),
+    ]
+  },
+})
+
+export default Selection