fix: Bring back ESM build (and fix bundle size) (#381)

Author: amannn

packages/next-intl/middleware.d.ts

@@ -1,3 +1,3 @@
-import Middleware from './dist/middleware';
+import createMiddleware from './dist/middleware';
 
-export = Middleware;
+export = createMiddleware;

packages/next-intl/package.json

@@ -18,26 +18,39 @@
     "postpublish": "git checkout . && rm ./README.md"
   },
   "main": "dist/index.js",
+  "module": "dist/index.mjs",
   "typings": "dist/index.d.ts",
   "exports": {
     ".": {
       "react-server": {
+        "node": "./dist/react-server/index.js",
+        "import": "./dist/react-server/index.mjs",
         "default": "./dist/react-server/index.js"
       },
+      "node": "./dist/index.js",
+      "import": "./dist/index.mjs",
       "default": "./dist/index.js"
     },
     "./server": {
+      "node": "./dist/server/index.js",
+      "import": "./dist/server/index.mjs",
       "default": "./dist/server/index.js"
     },
     "./client": {
+      "node": "./dist/client/index.js",
+      "import": "./dist/client/index.mjs",
       "default": "./dist/client/index.js"
     },
     "./link": {
       "types": "./link.d.ts",
+      "node": "./dist/link/index.js",
+      "import": "./dist/link/index.mjs",
       "default": "./dist/link/index.js"
     },
     "./middleware": {
       "types": "./middleware.d.ts",
+      "node": "./dist/middleware/index.js",
+      "import": "./dist/middleware/index.mjs",
       "default": "./dist/middleware/index.js"
     }
   },

packages/next-intl/tsup.config.js

@@ -3,7 +3,7 @@ import {defineConfig} from 'tsup';
 
 export default defineConfig({
   entry: ['src'],
-  format: ['cjs'],
+  format: ['cjs', 'esm'],
   splitting: false,
   sourcemap: true,
   clean: true,

packages/use-intl/package.json

@@ -17,6 +17,7 @@
     "prepublishOnly": "CI=true turbo test && turbo lint && turbo build"
   },
   "main": "dist/index.js",
+  "module": "dist/index.mjs",
   "typings": "dist/index.d.ts",
   "files": [
     "dist",

packages/use-intl/tsup.config.js

@@ -3,7 +3,7 @@ import {defineConfig} from 'tsup';
 
 const config = {
   entry: ['src'],
-  format: ['cjs'],
+  format: ['cjs', 'esm'],
   splitting: false,
   sourcemap: true,
   clean: true,