Name the default exports of modules

name-default-exports.mjs

import { readFileSync, writeFileSync } from "fs";
import glob from "glob";
import { pascalCase } from "change-case";

const defaultExportPattern = /export default \{/;

glob.sync("lib/**/index.js").forEach((file) => {
  const fileContents = readFileSync(file, "utf-8").toString();
  if (!defaultExportPattern.test(fileContents)) {
    return;
  }
  
  const parts = file.split("/");
  const dir = parts.at(-2);
  const moduleName = pascalCase(`${dir}-module`);
  const newContents =
    fileContents.replace(
      defaultExportPattern,
      `export const ${moduleName} = {`
    ) + `\nexport default ${moduleName};`;
  writeFileSync(file, newContents, "utf-8");
});