diff --git a/.gitignore b/.gitignore
index bbfd7e0..190c5d7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,9 @@
 node_modules
 coverage
 .cache
-dist
+packages/core/dist/**
+!packages/core/dist/index.js
+packages/utils/dist/**
+!packages/utils/dist/index.js
+packages/dom/dist/**
+!packages/dom/dist/index.js
diff --git a/package.json b/package.json
index 7167086..f49622a 100644
--- a/package.json
+++ b/package.json
@@ -41,6 +41,7 @@
   },
   "devDependencies": {
     "cross-env": "^7.0.3",
+    "esbuild": "^0.8.46",
     "eslint-plugin-prettier": "^3.3.1",
     "husky": "^4.3.7",
     "lint-staged": "^10.5.3",
diff --git a/packages/core/dist/index.js b/packages/core/dist/index.js
new file mode 100644
index 0000000..19001df
--- /dev/null
+++ b/packages/core/dist/index.js
@@ -0,0 +1,7 @@
+"use strict"
+
+if (process.env.NODE_ENV === "production") {
+  module.exports = require("./core.cjs.production.min.js")
+} else {
+  module.exports = require("./core.cjs.development.js")
+}
diff --git a/packages/core/package.json b/packages/core/package.json
index 55cadf0..4ee1f91 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.6.4",
+  "version": "0.6.5",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/re-rxjs/react-rxjs.git"
@@ -14,7 +14,11 @@
   ],
   "scripts": {
     "start": "tsdx watch",
-    "build": "tsdx build",
+    "build": "yarn build:ts && yarn build:esm && yarn build:cjs:dev && yarn build:cjs:prod",
+    "build:esm": "esbuild src/index.tsx --bundle --outfile=./dist/core.esm.js --external:react --external:rxjs --format=esm --sourcemap",
+    "build:cjs:dev": "esbuild src/index.tsx --bundle --outfile=./dist/core.cjs.development.js --external:react --external:rxjs --format=cjs --sourcemap",
+    "build:cjs:prod": "esbuild src/index.tsx --bundle --outfile=./dist/core.cjs.production.min.js --external:react --external:rxjs --format=cjs --minify --sourcemap",
+    "build:ts": "tsc -p ./tsconfig.json --outDir ./dist --skipLibCheck --emitDeclarationOnly",
     "test": "tsdx test --coverage",
     "lint": "prettier --check README.md && tsdx lint src",
     "format": "prettier --write README.md \"src/**/*.{js,jsx,ts,tsx,json,md}\"",
@@ -40,6 +44,7 @@
     "@types/jest": "^26.0.20",
     "@types/react": "^16.9.56",
     "@types/react-dom": "^16.9.9",
+    "esbuild": "^0.8.46",
     "jest-marbles": "^2.5.1",
     "lint-staged": "^10.5.3",
     "react": "^17.0.1",
diff --git a/packages/core/tsconfig.json b/packages/core/tsconfig.json
index 162a419..51a4152 100644
--- a/packages/core/tsconfig.json
+++ b/packages/core/tsconfig.json
@@ -1,5 +1,5 @@
 {
-  "include": ["src", "types", "test"],
+  "include": ["src"],
   "compilerOptions": {
     "target": "es5",
     "module": "esnext",
@@ -27,8 +27,5 @@
     "jsx": "react",
     "esModuleInterop": true
   },
-  "exclude": [
-    "**/*.test.ts",
-    "./src/test-helpers"
-  ]
+  "exclude": ["**/*.test.*", "**/test-helpers/*.*"]
 }
diff --git a/packages/dom/dist/index.js b/packages/dom/dist/index.js
new file mode 100644
index 0000000..4c1aefd
--- /dev/null
+++ b/packages/dom/dist/index.js
@@ -0,0 +1,7 @@
+"use strict"
+
+if (process.env.NODE_ENV === "production") {
+  module.exports = require("./dom.cjs.production.min.js")
+} else {
+  module.exports = require("./dom.cjs.development.js")
+}
diff --git a/packages/dom/package.json b/packages/dom/package.json
index 4d81584..567ea7d 100644
--- a/packages/dom/package.json
+++ b/packages/dom/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.1.1",
+  "version": "0.1.2",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/re-rxjs/react-rxjs.git"
@@ -14,7 +14,11 @@
   ],
   "scripts": {
     "start": "tsdx watch",
-    "build": "tsdx build",
+    "build": "yarn build:ts && yarn build:esm && yarn build:cjs:dev && yarn build:cjs:prod",
+    "build:esm": "esbuild src/index.tsx --bundle --outfile=./dist/dom.esm.js --external:react --external:rxjs --external:react-dom --format=esm --sourcemap",
+    "build:cjs:dev": "esbuild src/index.tsx --bundle --outfile=./dist/dom.cjs.development.js --external:react --external:rxjs --external:react-dom --format=cjs --sourcemap",
+    "build:cjs:prod": "esbuild src/index.tsx --bundle --outfile=./dist/dom.cjs.production.min.js --external:react --external:rxjs --external:react-dom --format=cjs --minify --sourcemap",
+    "build:ts": "tsc -p ./tsconfig.json --outDir ./dist --skipLibCheck --emitDeclarationOnly",
     "test": "tsdx test --coverage",
     "lint": "prettier --check README.md && tsdx lint src",
     "format": "prettier --write README.md \"src/**/*.{js,jsx,ts,tsx,json,md}\"",
@@ -36,7 +40,7 @@
     "Victor Oliva (https://github.com/voliva)"
   ],
   "devDependencies": {
-    "@react-rxjs/core": "0.6.4",
+    "@react-rxjs/core": "0.6.5",
     "@testing-library/react": "^11.2.3",
     "@testing-library/react-hooks": "^3.4.2",
     "@types/jest": "^26.0.20",
diff --git a/packages/dom/tsconfig.json b/packages/dom/tsconfig.json
index c37dcb8..fd0156a 100644
--- a/packages/dom/tsconfig.json
+++ b/packages/dom/tsconfig.json
@@ -1,5 +1,5 @@
 {
-  "include": ["src", "types", "test"],
+  "include": ["src"],
   "compilerOptions": {
     "target": "es5",
     "module": "esnext",
@@ -27,7 +27,5 @@
     "jsx": "react",
     "esModuleInterop": true
   },
-  "exclude": [
-    "**/*.test.ts"
-  ]
+  "exclude": ["**/*.test.ts"]
 }
diff --git a/packages/utils/dist/index.js b/packages/utils/dist/index.js
new file mode 100644
index 0000000..d416409
--- /dev/null
+++ b/packages/utils/dist/index.js
@@ -0,0 +1,7 @@
+"use strict"
+
+if (process.env.NODE_ENV === "production") {
+  module.exports = require("./utils.cjs.production.min.js")
+} else {
+  module.exports = require("./utils.cjs.development.js")
+}
diff --git a/packages/utils/package.json b/packages/utils/package.json
index 48dcb73..946c006 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.4.0",
+  "version": "0.4.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/re-rxjs/react-rxjs.git"
@@ -14,7 +14,11 @@
   ],
   "scripts": {
     "start": "tsdx watch",
-    "build": "tsdx build",
+    "build": "yarn build:ts && yarn build:esm && yarn build:cjs:dev && yarn build:cjs:prod",
+    "build:esm": "esbuild src/index.tsx --bundle --outfile=./dist/utils.esm.js --external:react --external:rxjs --external:@react-rxjs/core --format=esm --sourcemap",
+    "build:cjs:dev": "esbuild src/index.tsx --bundle --outfile=./dist/utils.cjs.development.js --external:react --external:rxjs --external:@react-rxjs/core --format=cjs --sourcemap",
+    "build:cjs:prod": "esbuild src/index.tsx --bundle --outfile=./dist/utils.cjs.production.min.js --external:react --external:rxjs --external:@react-rxjs/core --format=cjs --minify --sourcemap",
+    "build:ts": "tsc -p ./tsconfig.json --outDir ./dist --skipLibCheck --emitDeclarationOnly",
     "test": "tsdx test --coverage",
     "lint": "prettier --check README.md && tsdx lint src",
     "format": "prettier --write README.md \"src/**/*.{js,jsx,ts,tsx,json,md}\"",
@@ -36,7 +40,7 @@
     "Victor Oliva (https://github.com/voliva)"
   ],
   "devDependencies": {
-    "@react-rxjs/core": "0.6.4",
+    "@react-rxjs/core": "0.6.5",
     "@testing-library/react": "^11.2.3",
     "@testing-library/react-hooks": "^3.4.2",
     "@types/jest": "^26.0.20",
diff --git a/packages/utils/tsconfig.json b/packages/utils/tsconfig.json
index 9085962..e76196a 100644
--- a/packages/utils/tsconfig.json
+++ b/packages/utils/tsconfig.json
@@ -26,5 +26,6 @@
     },
     "jsx": "react",
     "esModuleInterop": true
-  }
+  },
+  "exclude": ["**/*.test.*"]
 }
diff --git a/yarn.lock b/yarn.lock
index 998db2f..6dbb2a4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1325,6 +1325,11 @@
     "@nodelib/fs.scandir" "2.1.4"
     fastq "^1.6.0"
 
+"@react-rxjs/core@0.6.4":
+  version "0.6.4"
+  resolved "https://registry.yarnpkg.com/@react-rxjs/core/-/core-0.6.4.tgz#26d8007692d9e4c959cc83ae2df4378c07ab71eb"
+  integrity sha512-CZdtxzjbiGA6D0+DU5aw/x6gk8dm8uCPCeXfvqVfzKpjjphZbT2GjsZG7tYbCB4zENy/VuzOwZYkO3SaLiadnA==
+
 "@rollup/plugin-babel@^5.1.0":
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/@rollup/plugin-babel/-/plugin-babel-5.2.1.tgz#20fc8f8864dc0eaa1c5578408459606808f72924"
@@ -2817,6 +2822,11 @@ es-to-primitive@^1.2.1:
     is-date-object "^1.0.1"
     is-symbol "^1.0.2"
 
+esbuild@^0.8.46:
+  version "0.8.46"
+  resolved "https://registry.yarnpkg.com/esbuild/-/esbuild-0.8.46.tgz#8fc7230ce3019b12e2553399f0c03875a729c26b"
+  integrity sha512-xck9sXNCNmjDHCCfxTCyhKTiFuEBweh+IDAhMLOJI990v1Fzii6MyIkT1LbkvjgoVgPX2SK1kpi5eZVGNrl8yg==
+
 escalade@^3.0.2:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/escalade/-/escalade-3.1.0.tgz#e8e2d7c7a8b76f6ee64c2181d6b8151441602d4e"