Update package.json and tsup.config.ts for CJS and ESM compatibility

- Changed the main entry point in package.json from index.js to index.cjs and updated types from index.d.ts to index.d.cts for better compatibility with CommonJS and ES modules.
- Modified tsup.config.ts to reflect the new file extensions for output, ensuring correct handling of CJS and ESM formats.
- Enhanced config.ts and logger.ts to utilize a unified require function that works in both ESM and CJS environments, improving module loading consistency.

Author: Pablo Eduardo Diaz

package.json

@@ -27,18 +27,18 @@
     "type": "git",
     "url": "https://github.com/Exudev/emitochondria.git"
   },
-  "main": "./dist/index.js",
+  "main": "./dist/index.cjs",
   "module": "./dist/index.mjs",
-  "types": "./dist/index.d.ts",
+  "types": "./dist/index.d.cts",
   "exports": {
     ".": {
       "import": {
         "types": "./dist/index.d.mts",
         "default": "./dist/index.mjs"
       },
       "require": {
-        "types": "./dist/index.d.ts",
-        "default": "./dist/index.js"
+        "types": "./dist/index.d.cts",
+        "default": "./dist/index.cjs"
       }
     },
     "./schema.json": "./schema.json"

src/config.ts

@@ -6,6 +6,43 @@ import { EmitochondriaConfig, EmitochondriaOptions, EventMap } from './types.js'
 
 const CONFIG_FILENAME = 'emitochondria.config.json';
 
+// Environment detection
+const isNode = typeof (globalThis as any).process !== 'undefined'
+  && (globalThis as any).process?.versions?.node != null;
+
+// Get require function - works in both ESM and CJS
+function getRequireFunction(): ((id: string) => any) | null {
+  if (!isNode) return null;
+
+  // CJS: globalThis.require is available (bundlers like tsup inject this)
+  if (typeof (globalThis as any).require === 'function') {
+    return (globalThis as any).require;
+  }
+
+  // Try Function constructor to get require in CJS context
+  try {
+    const req = Function('return typeof require !== "undefined" ? require : null')();
+    if (req) return req;
+  } catch {
+    // Ignore
+  }
+
+  // ESM: use createRequire
+  try {
+    // eslint-disable-next-line @typescript-eslint/no-require-imports
+    const { createRequire } = Function('return require("node:module")')();
+    // import.meta.url might be empty in CJS, use a fallback
+    const url = typeof import.meta?.url === 'string' && import.meta.url
+      ? import.meta.url
+      : 'file://' + (globalThis as any).process?.cwd?.() + '/';
+    return createRequire(url);
+  } catch {
+    return null;
+  }
+}
+
+const nodeRequire = getRequireFunction();
+
 let cachedConfig: EmitochondriaConfig | null = null;
 let cachedProjectRoot: string | null = null;
 
@@ -22,15 +59,14 @@ function findProjectRoot(): string {
   }
 
   try {
-    const req = (globalThis as any).require;
-    if (!req) {
+    if (!nodeRequire) {
       const cwd: string = proc.cwd();
       cachedProjectRoot = cwd;
       return cwd;
     }
 
-    const path = req('path');
-    const fs = req('fs');
+    const path = nodeRequire('path');
+    const fs = nodeRequire('fs');
 
     let dir: string = proc.cwd();
 
@@ -75,14 +111,13 @@ function loadConfigFileSync(): EmitochondriaConfig {
   }
 
   try {
-    const req = (globalThis as any).require;
-    if (!req) {
+    if (!nodeRequire) {
       cachedConfig = {};
       return cachedConfig;
     }
 
-    const fs = req('fs');
-    const path = req('path');
+    const fs = nodeRequire('fs');
+    const path = nodeRequire('path');
 
     // Look for config in project root first
     const projectRoot = findProjectRoot();

src/logger.ts

@@ -10,6 +10,39 @@ const isNode = typeof (globalThis as any).process !== 'undefined'
 
 const isBrowser = typeof (globalThis as any).window !== 'undefined';
 
+// Get require function - works in both ESM and CJS
+function getRequireFunction(): ((id: string) => any) | null {
+  if (!isNode) return null;
+
+  // CJS: globalThis.require is available (bundlers like tsup inject this)
+  if (typeof (globalThis as any).require === 'function') {
+    return (globalThis as any).require;
+  }
+
+  // Try Function constructor to get require in CJS context
+  try {
+    const req = Function('return typeof require !== "undefined" ? require : null')();
+    if (req) return req;
+  } catch {
+    // Ignore
+  }
+
+  // ESM: use createRequire
+  try {
+    // eslint-disable-next-line @typescript-eslint/no-require-imports
+    const { createRequire } = Function('return require("node:module")')();
+    // import.meta.url might be empty in CJS, use a fallback
+    const url = typeof import.meta?.url === 'string' && import.meta.url
+      ? import.meta.url
+      : 'file://' + (globalThis as any).process?.cwd?.() + '/';
+    return createRequire(url);
+  } catch {
+    return null;
+  }
+}
+
+const nodeRequire = getRequireFunction();
+
 // ============================================================
 // TIMESTAMP FORMATTING
 // ============================================================
@@ -124,11 +157,10 @@ export class Logger {
     if (!isNode) return;
 
     try {
-      // Require fs and path synchronously
-      const req = (globalThis as any).require;
-      if (req) {
-        this.fs = req('fs');
-        this.path = req('path');
+      // Require fs and path synchronously using ESM-compatible require
+      if (nodeRequire) {
+        this.fs = nodeRequire('fs');
+        this.path = nodeRequire('path');
 
         // Resolve path relative to project root (where package.json is)
         const projectRoot = getProjectRoot();

tsup.config.ts

@@ -12,8 +12,8 @@ export default defineConfig([
     minify: true,
     outExtension({ format }) {
       return {
-        js: format === 'cjs' ? '.js' : '.mjs',
-        dts: format === 'cjs' ? '.d.ts' : '.d.mts',
+        js: format === 'cjs' ? '.cjs' : '.mjs',
+        dts: format === 'cjs' ? '.d.cts' : '.d.mts',
       };
     },
   },