using rollup instead of microbundle

Author: DaniAkash

.npmrc

@@ -0,0 +1 @@
+save-exact=true

mangle.json

@@ -1,10 +1,9 @@
 {
   "name": "rex-state",
-  "version": "0.0.4-beta-4",
+  "version": "0.0.5",
   "description": "The Simplest state management tool for React",
   "scripts": {
-    "build": "microbundle",
-    "start": "microbundle watch",
+    "build": "rollup -c rollup.config.js",
     "test": "jest",
     "coverage": "jest --coverage"
   },
@@ -27,26 +26,28 @@
     "react-state"
   ],
   "devDependencies": {
-    "@babel/core": "^7.8.6",
-    "@babel/preset-env": "^7.8.6",
-    "@babel/preset-react": "^7.8.3",
-    "@babel/preset-typescript": "^7.8.3",
-    "@testing-library/react": "^9.4.1",
+    "@babel/core": "7.8.6",
+    "@babel/preset-env": "7.8.6",
+    "@babel/preset-react": "7.8.3",
+    "@babel/preset-typescript": "7.8.3",
+    "@testing-library/react": "9.4.1",
     "@types/jest": "25.1.1",
     "@types/react": "16.9.19",
     "@typescript-eslint/parser": "2.20.0",
-    "babel-jest": "^25.1.0",
+    "@wessberg/rollup-plugin-ts": "1.2.21",
+    "babel-jest": "25.1.0",
     "eslint": "6.8.0",
     "eslint-plugin-jest": "23.7.0",
     "eslint-plugin-prettier": "3.1.2",
     "eslint-plugin-tsc": "1.2.0",
     "husky": "4.2.1",
     "jest": "25.1.0",
-    "microbundle": "^0.11.0",
     "prettier": "1.19.1",
     "pretty-quick": "2.0.1",
-    "react": "^16.13.0",
-    "react-dom": "^16.13.0",
+    "react": "16.13.0",
+    "react-dom": "16.13.0",
+    "rollup": "2.0.2",
+    "rollup-plugin-terser": "5.2.0",
     "typescript": "3.7.5"
   },
   "peerDependencies": {

package.json

@@ -0,0 +1,24 @@
+import { terser } from "rollup-plugin-terser";
+import pkg from "./package.json";
+import ts from "@wessberg/rollup-plugin-ts";
+
+export default {
+  input: "src/index.tsx",
+  output: [
+    {
+      file: pkg.main,
+      format: "cjs"
+    },
+    {
+      file: pkg.module,
+      format: "es"
+    },
+    {
+      file: pkg["umd:main"],
+      format: "umd",
+      name: "rexstate"
+    }
+  ],
+  external: [...Object.keys(pkg.dependencies || {})],
+  plugins: [ts({}), terser()]
+};

rollup.config.js

@@ -6,11 +6,6 @@ import React, {
   Dispatch
 } from "react";
 
-// @ts-ignore - workaround for the issue with microbundle - https://github.com/developit/microbundle/issues/306
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-
 const useRex = <T extends object>(
   defaultState: T
 ): [T, Dispatch<Partial<Pick<T, keyof T>>>] => {