chore(headless): esm build for node will look for "module" files inst…

…ead of "main" (#4400)

https://coveord.atlassian.net/browse/KIT-3023

packages/headless/esbuild.mjs

@@ -234,6 +234,7 @@ const nodeEsm = Object.entries(useCaseEntries).map((entry) => {
       outfile,
       format: 'esm',
       external: ['pino'],
+      mainFields: ['module', 'main'],
     },
     dir
   );
@@ -263,30 +264,6 @@ async function buildNodeConfig(options, outDir) {
   return out;
 }
 
-// https://github.com/coveo/ui-kit/issues/1616
-function adjustRequireImportsInNodeEsmBundles() {
-  const paths = getNodeEsmBundlePaths();
-
-  return paths.map(async (filePath) => {
-    const resolvedPath = resolve(filePath);
-
-    const content = await promises.readFile(resolvedPath, {
-      encoding: 'utf-8',
-    });
-    const modified = content.replace(/__require\(/g, 'require(');
-
-    await promises.writeFile(resolvedPath, modified);
-  });
-}
-
-function getNodeEsmBundlePaths() {
-  return Object.entries(useCaseEntries).map((entry) => {
-    const [useCase] = entry;
-    const dir = getUseCaseDir('dist/', useCase);
-    return `${dir}/headless.esm.js`;
-  });
-}
-
 function outputMetafile(platform, outDir, metafile) {
   const outFile = resolve(outDir, `${platform}.stats.json`);
   writeFileSync(outFile, JSON.stringify(metafile));
@@ -301,7 +278,6 @@ async function main() {
     ...nodeCjs,
     ...quanticUmd,
   ]);
-  await Promise.all(adjustRequireImportsInNodeEsmBundles());
 }
 
 main();