A simple directory concatenator for easy copy and paste into a LLM

agent.js

import fs from "fs";
import path from "path";
import { fileURLToPath } from "url";
import clipboardy from "clipboardy";

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

const INPUT_DIR =
  process.argv[2] || "/Users/jsmith/MyExampleProject";
const OUTPUT_FILE = path.join(__dirname, "OUTPUT.txt");

const allowedExtensions = [".swift", ".plist"];

function isAllowedFile(filePath) {
  return allowedExtensions.includes(path.extname(filePath).toLowerCase());
}

function mergeFiles() {
  let mergedContent = "";

  function traverseDir(dir) {
    const files = fs.readdirSync(dir);
    for (const file of files) {
      const filePath = path.join(dir, file);
      const stat = fs.statSync(filePath);
      if (stat.isDirectory()) {
        traverseDir(filePath);
      } else if (stat.isFile() && isAllowedFile(filePath)) {
        try {
          const content = fs.readFileSync(filePath, "utf-8");
          mergedContent += `\n*********************************************\n`;
          mergedContent += `FILE - ${path.basename(filePath)}\n`;
          mergedContent += `*********************************************\n\n`;
          mergedContent += content + "\n\n";
        } catch (error) {
          console.error(`Error reading file ${filePath}:`, error.message);
        }
      }
    }
  }

  try {
    traverseDir(INPUT_DIR);

    if (mergedContent.trim() === "") {
      console.log("No matching files found. OUTPUT.txt will not be created.");
    } else {
      fs.writeFileSync(OUTPUT_FILE, mergedContent);
      console.log(`Files merged successfully! Output: ${OUTPUT_FILE}`);

      // Copy to clipboard
      clipboardy.writeSync(mergedContent);
      console.log("Content copied to clipboard!");
    }
  } catch (error) {
    console.error("Error merging files:", error.message);
  }
}

mergeFiles();