fix: split CJS and ESM builds correctly

package.json

@@ -4,21 +4,21 @@
 	"description": "A framework agnostic library for editable commands",
 	"author": "@skyra",
 	"license": "MIT",
-	"main": "dist/index.js",
-	"module": "dist/index.mjs",
-	"types": "dist/index.d.ts",
+	"main": "dist/cjs/index.cjs",
+	"module": "dist/esm/index.mjs",
+	"types": "dist/cjs/index.d.cts",
 	"exports": {
-		"types": "./dist/index.d.ts",
-		"import": "./dist/index.mjs",
-		"require": "./dist/index.js"
+		"import": {
+			"types": "./dist/esm/index.d.mts",
+			"default": "./dist/esm/index.mjs"
+		},
+		"require": {
+			"types": "./dist/cjs/index.d.cts",
+			"default": "./dist/cjs/index.cjs"
+		}
 	},
 	"sideEffects": false,
 	"homepage": "https://skyra-project.github.io/editable-commands",
-	"files": [
-		"dist/**/*.js*",
-		"dist/**/*.mjs*",
-		"dist/**/*.d*"
-	],
 	"scripts": {
 		"lint": "eslint src --ext ts --fix",
 		"format": "prettier --write \"src/**/*.ts\"",
@@ -29,6 +29,9 @@
 		"check-update": "cliff-jumper --dry-run",
 		"prepack": "yarn build"
 	},
+	"files": [
+		"dist/"
+	],
 	"devDependencies": {
 		"@commitlint/cli": "^19.3.0",
 		"@commitlint/config-conventional": "^19.2.2",

tsup.config.ts

@@ -1,14 +1,19 @@
-import { defineConfig } from 'tsup';
+import { Options, defineConfig } from 'tsup';
 
-export default defineConfig({
+const baseOptions: Options = {
 	clean: true,
 	dts: true,
 	entry: ['src/index.ts'],
-	format: ['esm', 'cjs'],
 	minify: false,
 	skipNodeModulesBundle: true,
 	sourcemap: true,
 	target: 'es2020',
 	tsconfig: 'src/tsconfig.json',
-	keepNames: true
-});
+	keepNames: true,
+	treeshake: true
+};
+
+export default [
+	defineConfig({ ...baseOptions, outDir: 'dist/cjs', format: 'cjs', outExtension: () => ({ js: '.cjs' }) }),
+	defineConfig({ ...baseOptions, outDir: 'dist/esm', format: 'esm' })
+];