Replace define with env as it is the same thing.

- `env` is the same thing as `define` with `JSON.stringify`.

Author: aryaemami59

tsup.config.ts

@@ -21,6 +21,7 @@ export default defineConfig((options): Options[] => {
       reselect: 'src/index.ts'
     },
     sourcemap: true,
+    target: ['esnext'],
     clean: true,
     ...options
   }
@@ -29,7 +30,7 @@ export default defineConfig((options): Options[] => {
     {
       ...commonOptions,
       name: 'Modern ESM',
-      target: 'esnext',
+      target: ['esnext'],
       format: ['esm'],
       outExtension: () => ({ js: '.mjs' }),
       dts: true
@@ -45,7 +46,7 @@ export default defineConfig((options): Options[] => {
       },
       format: ['esm'],
       outExtension: () => ({ js: '.js' }),
-      target: 'es2017'
+      target: ['es2017']
     },
 
     // Meant to be served up via CDNs like `unpkg`.
@@ -56,8 +57,8 @@ export default defineConfig((options): Options[] => {
         'reselect.browser': 'src/index.ts'
       },
       platform: 'browser',
-      define: {
-        'process.env.NODE_ENV': JSON.stringify('production')
+      env: {
+        NODE_ENV: 'production'
       },
       format: ['esm'],
       outExtension: () => ({ js: '.mjs' }),
@@ -69,10 +70,10 @@ export default defineConfig((options): Options[] => {
       entry: {
         'reselect.development': 'src/index.ts'
       },
-      define: {
-        'process.env.NODE_ENV': JSON.stringify('development')
+      env: {
+        NODE_ENV: 'development'
       },
-      format: 'cjs',
+      format: ['cjs'],
       outDir: './dist/cjs/',
       outExtension: () => ({ js: '.cjs' })
     },
@@ -82,10 +83,10 @@ export default defineConfig((options): Options[] => {
       entry: {
         'reselect.production.min': 'src/index.ts'
       },
-      define: {
-        'process.env.NODE_ENV': JSON.stringify('production')
+      env: {
+        NODE_ENV: 'production'
       },
-      format: 'cjs',
+      format: ['cjs'],
       outDir: './dist/cjs/',
       outExtension: () => ({ js: '.cjs' }),
       minify: true,