@reliverse/rse-sdk/bin/utils/codemods/convertCjsToEsm.js

@reliverse/rse-sdk allows you to create new plugins for @reliverse/rse CLI, interact with reliverse.org, and even extend your own CLI functionality (you may also try @reliverse/dler-sdk for this case).

import path from "@reliverse/pathkit";
import fs from "@reliverse/relifso";
import { relinka } from "@reliverse/relinka";
import { glob } from "tinyglobby";
export async function convertCjsToEsm(projectPath) {
  relinka("info", `Converting CommonJS to ESM in ${projectPath}`);
  const files = await glob("**/*.{js,jsx,ts,tsx}", {
    cwd: path.resolve(projectPath)
  });
  for (const file of files) {
    const filePath = path.join(projectPath, file);
    const content = await fs.readFile(filePath, "utf-8");
    let updatedContent = content;
    updatedContent = updatedContent.replace(
      /(?:const|let|var)\s*{\s*([^}]+)}\s*=\s*require\(['"]([^'"]+)['"]\)/g,
      'import { $1 } from "$2"'
    ).replace(
      /(?:const|let|var)\s+(\w+)\s*=\s*require\(['"]([^'"]+)['"]\)/g,
      'import $1 from "$2"'
    );
    updatedContent = updatedContent.replace(/module\.exports\s*=\s*([^;\n]+)/g, "export default $1").replace(
      /module\.exports\.(\w+)\s*=\s*([^;\n]+)/g,
      "export const $1 = $2"
    ).replace(/exports\.(\w+)\s*=\s*([^;\n]+)/g, "export const $1 = $2");
    if (content !== updatedContent) {
      await fs.writeFile(filePath, updatedContent, "utf-8");
      relinka("info", `Converted ${filePath} to ESM`);
    }
  }
}