wip: refactoring tui

js/src/tool/view.ts

@@ -97,13 +97,15 @@ export const view = Tool.define({
         `This is an image file of type: ${isImage}\nUse a different tool to process images`,
       );
     const lines = await file.text().then((text) => text.split("\n"));
-    const content = lines.slice(offset, offset + limit).map((line, index) => {
-      line =
-        line.length > MAX_LINE_LENGTH
-          ? line.substring(0, MAX_LINE_LENGTH) + "..."
-          : line;
+    const raw = lines.slice(offset, offset + limit).map((line) => {
+      return line.length > MAX_LINE_LENGTH
+        ? line.substring(0, MAX_LINE_LENGTH) + "..."
+        : line;
+    });
+    const content = raw.map((line, index) => {
       return `${(index + offset + 1).toString().padStart(5, "0")}| ${line}`;
     });
+    const preview = raw.slice(0, 20).join("\n");
 
     let output = "<file>\n";
     output += content.join("\n");
@@ -121,6 +123,9 @@ export const view = Tool.define({
 
     return {
       output,
+      metadata: {
+        preview,
+      },
     };
   },
 });