diff --git a/.babelrc b/.babelrc
deleted file mode 100644
index 43a01f3..0000000
--- a/.babelrc
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-	"presets": [
-		"@babel/typescript",
-		[
-			"@babel/preset-env",
-			{
-				"targets": {
-					"node": "10"
-				}
-			}
-		]
-	],
-	"plugins": ["@babel/plugin-proposal-class-properties"]
-}
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 310b1d3..af0883a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -35,7 +35,7 @@ jobs:
       - run: npm run lint
       - run: npm run build
       - run: npm run test
-      - run: npx testpack-cli --keep={@babel/*,ts-jest,typescript} .babelrc tsconfig*.json src/e2e.spec.ts
+      - run: npx testpack-cli --keep=@types/*,ts-jest,typescript jest.config.js tsconfig.json src/e2e.spec.ts src/tsconfig.test.json
 
       - name: Upload test coverage report to Codecov
         uses: codecov/codecov-action@v1
diff --git a/.gitignore b/.gitignore
index 7a3fb24..6477d00 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 package-lock.json
+*.tsbuildinfo
 
 coverage/
 demo/lib/
diff --git a/.publishrc b/.publishrc
deleted file mode 100644
index b90ef3a..0000000
--- a/.publishrc
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-  "validations": {
-    "vulnerableDependencies": false,
-    "uncommittedChanges": true,
-    "untrackedFiles": true,
-    "sensitiveData": true,
-    "branch": "main",
-    "gitTag": true
-  },
-  "confirm": true,
-  "publishCommand": "npm publish",
-  "publishTag": "latest",
-  "prePublishScript": "npm run publish-please-prereqs",
-  "postPublishScript": false
-}
diff --git a/.release-it.json b/.release-it.json
new file mode 100644
index 0000000..80315cf
--- /dev/null
+++ b/.release-it.json
@@ -0,0 +1,13 @@
+{
+	"hooks": {
+		"before:init": ["npm run lint", "npm test"],
+		"after:bump": "npm run build"
+	},
+	"git": {
+		"changelog": false,
+		"commit": false,
+		"requireBranch": "main",
+		"requireCommits": true,
+		"tagName": "${version}"
+	}
+}
diff --git a/demo/tsconfig.json b/demo/tsconfig.json
index 7c7adc1..4ddae6f 100644
--- a/demo/tsconfig.json
+++ b/demo/tsconfig.json
@@ -6,9 +6,11 @@
 			"es2015.core",
 			"es2015.iterable",
 			"es2016.array.include"
-		]
+		],
+		"noEmit": true,
+		"outDir": "./lib"
 	},
 	"extends": "../tsconfig.json",
-	"include": ["src"],
+	"include": ["src", "webpack.config.js"],
 	"references": [{ "path": "../src" }]
 }
diff --git a/package.json b/package.json
index d959c20..65d76cf 100644
--- a/package.json
+++ b/package.json
@@ -1,10 +1,13 @@
 {
   "name": "regex-to-strings",
-  "version": "2.0.2",
+  "version": "2.0.3",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/wimpyprogrammer/regex-to-strings.git"
   },
+  "publishConfig": {
+    "registry": "https://registry.npmjs.org/"
+  },
   "bugs": {
     "url": "https://github.com/wimpyprogrammer/regex-to-strings/issues"
   },
@@ -15,7 +18,9 @@
   "main": "lib/index.js",
   "types": "./lib/index.d.ts",
   "files": [
-    "lib/"
+    "lib/**/*.js",
+    "lib/**/*.js.map",
+    "lib/**/*.d.ts"
   ],
   "sideEffects": [
     "demo/**/polyfills.ts",
@@ -26,24 +31,15 @@
   },
   "scripts": {
     "build": "run-s build:*",
-    "build:src": "babel src -d lib --extensions '.js,.ts' --ignore '**/*.spec.js','**/*.spec.ts' --delete-dir-on-start",
+    "build:src": "tsc -b --clean && tsc -b",
     "build:demo": "wp --config demo/webpack.config.js",
-    "build:types": "tsc --noEmit false --emitDeclarationOnly",
     "format": "prettier --write '{src,demo/src}/**'",
-    "lint": "tsc -b && eslint . --report-unused-disable-directives",
+    "lint": "tsc -b ./tsconfig.lint.json && eslint . --report-unused-disable-directives",
     "precommit": "pretty-quick --staged",
-    "prepublish": "npx publish-please guard",
-    "publish-please": "npx publish-please",
-    "publish-please-prereqs": "npm run lint && npm run test && npm run build",
+    "release": "npx release-it",
     "test": "jest --coverage"
   },
   "devDependencies": {
-    "@babel/cli": "^7.13.10",
-    "@babel/core": "^7.13.10",
-    "@babel/plugin-proposal-class-properties": "^7.13.0",
-    "@babel/preset-env": "^7.13.10",
-    "@babel/preset-typescript": "^7.13.0",
-    "@types/escape-string-regexp": "^2.0.1",
     "@types/history": "^4.7.3",
     "@types/jest": "^26.0.10",
     "@types/jest-when": "^2.4.1",
diff --git a/src/e2e.spec.ts b/src/e2e.spec.ts
index 9d81cb1..f7aed4f 100644
--- a/src/e2e.spec.ts
+++ b/src/e2e.spec.ts
@@ -1,6 +1,13 @@
 import { count, expand, expandAll, expandN } from '.';
 
 describe('count end-to-end', () => {
+	it('includes typings', () => {
+		expect(() => {
+			// @ts-expect-error Accepts string | RegExp
+			count(123);
+		}).toThrow();
+	});
+
 	it('returns a count of potential strings that match pattern', () => {
 		const numStrings = count(/[a-z]{5}/i);
 
@@ -11,6 +18,13 @@ describe('count end-to-end', () => {
 describe('expand end-to-end', () => {
 	const phoneNumberPattern = /((\(555\) ?)|(555-))?\d{3}-\d{4}/;
 
+	it('includes typings', () => {
+		expect(() => {
+			// @ts-expect-error Accepts string | RegExp
+			expand(123);
+		}).toThrow();
+	});
+
 	it('returns a count of potential strings that match pattern', () => {
 		const phoneNumberExpander = expand(phoneNumberPattern);
 
@@ -29,6 +43,13 @@ describe('expand end-to-end', () => {
 });
 
 describe('expandAll end-to-end', () => {
+	it('includes typings', () => {
+		expect(() => {
+			// @ts-expect-error Accepts string | RegExp
+			expandAll(123);
+		}).toThrow();
+	});
+
 	it('returns all strings that match pattern', () => {
 		const strings = expandAll(/\d/);
 
@@ -40,6 +61,13 @@ describe('expandAll end-to-end', () => {
 });
 
 describe('expandN end-to-end', () => {
+	it('includes typings', () => {
+		expect(() => {
+			// @ts-expect-error Accepts string | RegExp
+			expandN(123, 10);
+		}).toThrow();
+	});
+
 	it('returns no more than N strings that match pattern', () => {
 		const pattern = /\d{3,5}/;
 		const strings = expandN(pattern, 5);
diff --git a/src/tsconfig.json b/src/tsconfig.json
index 2c6c771..8400bb7 100644
--- a/src/tsconfig.json
+++ b/src/tsconfig.json
@@ -1,6 +1,8 @@
 {
 	"compilerOptions": {
-		"lib": ["es5", "es2015.core", "es2015.iterable", "es2016.array.include"]
+		"lib": ["es5", "es2015.core", "es2015.iterable", "es2016.array.include"],
+		"outDir": "../lib",
+		"rootDir": "./"
 	},
 	"extends": "../tsconfig.json",
 	"exclude": ["../**/*.spec.ts", "../**/*.config.js"],
diff --git a/src/tsconfig.test.json b/src/tsconfig.test.json
index c4ac774..6deedaf 100644
--- a/src/tsconfig.test.json
+++ b/src/tsconfig.test.json
@@ -7,9 +7,11 @@
 			"es2016.array.include",
 			"es2017.string"
 		],
+		"noEmit": true,
+		"outDir": "../lib",
 		"types": ["jest", "regexp-tree", "./types/regexp-tree"]
 	},
 	"extends": "../tsconfig.json",
-	"include": ["./**/*.spec.ts", "../**/*.config.js"],
+	"include": ["./**/*.spec.ts", "../jest.config.js"],
 	"references": [{ "path": "./" }]
 }
diff --git a/tsconfig.json b/tsconfig.json
index b9436d5..f1d3b95 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -4,15 +4,15 @@
 		"baseUrl": ".",
 		"checkJs": true,
 		"composite": true,
+		"declaration": true,
 		"esModuleInterop": true,
 		"forceConsistentCasingInFileNames": true,
-		"module": "es2015",
+		"module": "CommonJS",
 		"downlevelIteration": true,
 		"moduleResolution": "node",
 		"noImplicitReturns": true,
 		"noUnusedLocals": true,
 		"noUnusedParameters": true,
-		"outDir": "../lib",
 		"pretty": true,
 		"rootDir": ".",
 		"skipLibCheck": true,
diff --git a/tsconfig.lint.json b/tsconfig.lint.json
new file mode 100644
index 0000000..67c49bd
--- /dev/null
+++ b/tsconfig.lint.json
@@ -0,0 +1,7 @@
+{
+	"compilerOptions": {
+		"noEmit": true
+	},
+	"extends": "./tsconfig.json",
+	"references": [{ "path": "./" }]
+}