diff --git a/package.json b/package.json
index e2c153b..2244d93 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,8 @@
 		"test": "vitest run",
 		"test:watch": "vitest",
 		"update": "yarn upgrade-interactive",
-		"build": "tsc -p src --noEmit && yarn clean && tsup && tsc -p src --emitDeclarationOnly && tsx scripts/post-build.mts",
+		"prepack": "yarn build",
+		"build": "tsc -p src --noEmit && yarn clean && tsup",
 		"clean": "node scripts/clean.mjs",
 		"typecheck": "tsc -p src --noEmit",
 		"bump": "cliff-jumper",
@@ -47,7 +48,6 @@
 		"@sapphire/eslint-config": "^5.0.5",
 		"@sapphire/prettier-config": "^2.0.0",
 		"@sapphire/ts-config": "^5.0.1",
-		"@types/node": "^20.14.10",
 		"@typescript-eslint/eslint-plugin": "^7.14.1",
 		"@typescript-eslint/parser": "^7.14.1",
 		"@vitest/coverage-c8": "^0.33.0",
@@ -59,7 +59,6 @@
 		"lint-staged": "^15.2.7",
 		"prettier": "^3.3.2",
 		"tsup": "^8.1.0",
-		"tsx": "^4.16.2",
 		"typedoc": "^0.26.2",
 		"typedoc-plugin-mdn-links": "^3.2.1",
 		"typescript": "^5.5.2",
diff --git a/scripts/post-build.mts b/scripts/post-build.mts
deleted file mode 100644
index a616f4c..0000000
--- a/scripts/post-build.mts
+++ /dev/null
@@ -1,15 +0,0 @@
-import { copyFile, readFile, writeFile } from 'node:fs/promises';
-
-const originalDTS = new URL('../dist/index.d.ts', import.meta.url);
-const originalDTSMap = new URL('../dist/index.d.ts.map', import.meta.url);
-
-const esmDTS = new URL('../dist/index.d.mts', import.meta.url);
-const esmDTSMap = new URL('../dist/index.d.mts.map', import.meta.url);
-
-await copyFile(originalDTS, esmDTS);
-
-const readMap = await readFile(originalDTSMap, 'utf-8');
-const parsedMap = JSON.parse(readMap);
-parsedMap.file = 'index.d.mts';
-
-await writeFile(esmDTSMap, JSON.stringify(parsedMap), 'utf-8');
diff --git a/src/index.ts b/src/index.ts
index 83c35b4..5e3da46 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -220,7 +220,10 @@ export class AsyncEventEmitter<
 		listener: AsyncEventEmitterListenerForEvent<AsyncEventEmitter<Events>, K>,
 	): this;
 
-	public removeListener(eventName: string | symbol, listener: (...args: any[]) => void): this {
+	public removeListener<K extends string | symbol>(
+		eventName: K,
+		listener: AsyncEventEmitterListenerForEvent<AsyncEventEmitter<Events>, K>,
+	): this {
 		validateListener(listener);
 
 		const events = this._events;
@@ -448,7 +451,10 @@ export class AsyncEventEmitter<
 		...args: GetAsyncEventEmitterEventParameters<AsyncEventEmitter<Events>, K>
 	): boolean;
 
-	public emit(eventName: string | symbol, ...args: any[]): boolean {
+	public emit<K extends string | symbol>(
+		eventName: K,
+		...args: GetAsyncEventEmitterEventParameters<AsyncEventEmitter<Events>, K>
+	): boolean {
 		let doError = eventName === 'error';
 
 		const events = this._events;
@@ -1003,7 +1009,10 @@ function handleMaybeAsync(emitter: AsyncEventEmitter<any>, result: any) {
 
 		if (typeof the === 'function') {
 			the.call(result, undefined, (error: any) => {
-				emitter.emit('error', error);
+				// Emit on next tick
+				setTimeout(() => {
+					emitter.emit('error', error);
+				}, 0);
 			});
 		}
 
diff --git a/tsup.config.ts b/tsup.config.ts
index 67ded95..2654ed1 100644
--- a/tsup.config.ts
+++ b/tsup.config.ts
@@ -20,7 +20,7 @@ const sharedConfig: Options = {
 	},
 	splitting: false,
 	keepNames: true,
-	dts: false,
+	dts: true,
 	sourcemap: true,
 	treeshake: false,
 	outDir: 'dist',
diff --git a/yarn.lock b/yarn.lock
index ee33d68..9c996da 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1135,15 +1135,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/node@npm:^20.14.10":
-  version: 20.14.10
-  resolution: "@types/node@npm:20.14.10"
-  dependencies:
-    undici-types: "npm:~5.26.4"
-  checksum: 10/672892cf94d0d95cf052f11271990686a0fd204cd1e5fe7a4ef240e5315e06711765dc47b9ec98627d3adac18b8c92bb7e2d8db21d18faa20bc3e3203a143e79
-  languageName: node
-  linkType: hard
-
 "@types/parse-json@npm:^4.0.0":
   version: 4.0.0
   resolution: "@types/parse-json@npm:4.0.0"
@@ -1379,7 +1370,6 @@ __metadata:
     "@sapphire/eslint-config": "npm:^5.0.5"
     "@sapphire/prettier-config": "npm:^2.0.0"
     "@sapphire/ts-config": "npm:^5.0.1"
-    "@types/node": "npm:^20.14.10"
     "@typescript-eslint/eslint-plugin": "npm:^7.14.1"
     "@typescript-eslint/parser": "npm:^7.14.1"
     "@vitest/coverage-c8": "npm:^0.33.0"
@@ -1391,7 +1381,6 @@ __metadata:
     lint-staged: "npm:^15.2.7"
     prettier: "npm:^3.3.2"
     tsup: "npm:^8.1.0"
-    tsx: "npm:^4.16.2"
     typedoc: "npm:^0.26.2"
     typedoc-plugin-mdn-links: "npm:^3.2.1"
     typescript: "npm:^5.5.2"
@@ -2494,7 +2483,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"esbuild@npm:^0.21.3, esbuild@npm:^0.21.4, esbuild@npm:~0.21.5":
+"esbuild@npm:^0.21.3, esbuild@npm:^0.21.4":
   version: 0.21.5
   resolution: "esbuild@npm:0.21.5"
   dependencies:
@@ -3106,15 +3095,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"get-tsconfig@npm:^4.7.5":
-  version: 4.7.5
-  resolution: "get-tsconfig@npm:4.7.5"
-  dependencies:
-    resolve-pkg-maps: "npm:^1.0.0"
-  checksum: 10/de7de5e4978354e8e6d9985baf40ea32f908a13560f793bc989930c229cc8d5c3f7b6b2896d8e43eb1a9b4e9e30018ef4b506752fd2a4b4d0dfee4af6841b119
-  languageName: node
-  linkType: hard
-
 "git-cliff-darwin-arm64@npm:1.4.0":
   version: 1.4.0
   resolution: "git-cliff-darwin-arm64@npm:1.4.0"
@@ -5147,13 +5127,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"resolve-pkg-maps@npm:^1.0.0":
-  version: 1.0.0
-  resolution: "resolve-pkg-maps@npm:1.0.0"
-  checksum: 10/0763150adf303040c304009231314d1e84c6e5ebfa2d82b7d94e96a6e82bacd1dcc0b58ae257315f3c8adb89a91d8d0f12928241cba2df1680fbe6f60bf99b0e
-  languageName: node
-  linkType: hard
-
 "restore-cursor@npm:^2.0.0":
   version: 2.0.0
   resolution: "restore-cursor@npm:2.0.0"
@@ -5990,22 +5963,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"tsx@npm:^4.16.2":
-  version: 4.16.2
-  resolution: "tsx@npm:4.16.2"
-  dependencies:
-    esbuild: "npm:~0.21.5"
-    fsevents: "npm:~2.3.3"
-    get-tsconfig: "npm:^4.7.5"
-  dependenciesMeta:
-    fsevents:
-      optional: true
-  bin:
-    tsx: dist/cli.mjs
-  checksum: 10/841ccbace3dc0c42704bb5c4cea47e1f4cd313aa4719fd4531e5ed40bb862b02349c76f7c56c53b64207eebbb1c2ac2e117482aabfbf197a30fbc0b2584b60be
-  languageName: node
-  linkType: hard
-
 "type-check@npm:^0.4.0, type-check@npm:~0.4.0":
   version: 0.4.0
   resolution: "type-check@npm:0.4.0"
@@ -6116,13 +6073,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"undici-types@npm:~5.26.4":
-  version: 5.26.5
-  resolution: "undici-types@npm:5.26.5"
-  checksum: 10/0097779d94bc0fd26f0418b3a05472410408877279141ded2bd449167be1aed7ea5b76f756562cb3586a07f251b90799bab22d9019ceba49c037c76445f7cddd
-  languageName: node
-  linkType: hard
-
 "unicorn-magic@npm:^0.1.0":
   version: 0.1.0
   resolution: "unicorn-magic@npm:0.1.0"