build: tsup for better cjs / esm support

packages/proxy-container/package.json

@@ -3,15 +3,15 @@
 	"version": "1.0.0",
 	"description": "Lightweight HTTP proxy for Discord's API, brought to you as a container 📦",
 	"scripts": {
-		"build": "unbuild",
+		"build": "tsup",
 		"lint": "prettier --check . && TIMING=1 eslint src --ext mjs,js,ts",
 		"format": "prettier --write . && TIMING=1 eslint src --ext mjs,js,ts --fix",
 		"fmt": "yarn format",
 		"prepack": "yarn lint && yarn test && yarn build",
 		"changelog": "git cliff --prepend ./CHANGELOG.md -u -c ./cliff.toml -r ../../ --include-path 'packages/proxy-container/*'"
 	},
-	"main": "./dist/index.mjs",
 	"type": "module",
+	"module": "./dist/index.js",
 	"directories": {
 		"lib": "src"
 	},
@@ -53,9 +53,8 @@
 		"eslint": "^8.23.0",
 		"eslint-config-neon": "^0.1.23",
 		"prettier": "^2.7.1",
-		"rollup-plugin-typescript2": "^0.33.0",
-		"typescript": "^4.8.2",
-		"unbuild": "^0.8.9"
+		"tsup": "^6.2.3",
+		"typescript": "^4.8.2"
 	},
 	"engines": {
 		"node": ">=16.9.0"