fix build script to use rollup

.prettierignore

@@ -1,2 +1 @@
 node_modules
-lib

package.json

@@ -28,7 +28,7 @@
   "types": "lib/index.d.ts",
   "scripts": {
     "example": "ts-node example/example",
-    "build": "ts-node rollup.build",
+    "build": "rollup -c && prettier --write './lib/index.d.ts'",
     "test": "jest",
     "lint": "eslint -c .eslintrc.json --ext ts,tsx src"
   },
@@ -42,12 +42,9 @@
     "ts-graphviz": "^0.14.0"
   },
   "devDependencies": {
-    "@rollup/plugin-commonjs": "^17.0.0",
     "@testing-library/jest-dom": "^5.11.8",
     "@testing-library/react": "^11.2.3",
     "@testing-library/react-hooks": "^4.0.0",
-    "@types/fs-extra": "^9.0.1",
-    "@types/glob": "^7.1.3",
     "@types/prop-types": "^15.7.3",
     "@types/react": "^17.0.0",
     "@types/react-dom": "^17.0.0",
@@ -63,14 +60,13 @@
     "eslint-plugin-prettier": "^3.3.1",
     "eslint-plugin-react": "^ 7.22.0",
     "eslint-plugin-react-hooks": "^4.2.0",
-    "fs-extra": "^9.0.1",
-    "glob": "^7.1.6",
     "jest": "^26.6.3",
     "jest-graphviz": "^0.4.0",
     "prettier": "^2.2.1",
     "react": "^17.0.1",
     "react-test-renderer": "^17.0.1",
     "rollup": "^2.36.1",
+    "rollup-plugin-delete": "^2.0.0",
     "rollup-plugin-dts": "^2.0.1",
     "rollup-plugin-terser": "^7.0.2",
     "rollup-plugin-typescript2": "^0.29.0",

rollup.config.js

@@ -0,0 +1,55 @@
+import typescript from 'rollup-plugin-typescript2';
+import del from 'rollup-plugin-delete';
+import dts from 'rollup-plugin-dts';
+import { terser } from 'rollup-plugin-terser';
+
+/** @type {import('rollup').RollupOptions[]} */
+const options = [
+  {
+    input: './src/index.ts',
+    plugins: [
+      typescript({
+        tsconfigOverride: {
+          compilerOptions: {
+            module: 'ESNext',
+            declaration: true,
+          },
+        },
+      }),
+      terser({
+        format: {
+          comments: false,
+        },
+      }),
+    ],
+    external: ['react', 'react-dom/server', 'ts-graphviz', 'prop-types', 'react-reconciler'],
+    output: [
+      {
+        format: 'cjs',
+        file: './lib/index.js',
+      },
+      {
+        format: 'esm',
+        file: './lib/index.mjs',
+      },
+    ],
+  },
+  {
+    input: './lib/index.d.ts',
+    plugins: [
+      del({
+        targets: ['lib/**/*.d.ts', '!lib/index.d.ts'],
+        hook: 'buildEnd',
+      }),
+      dts(),
+    ],
+    output: [
+      {
+        format: 'esm',
+        file: './lib/index.d.ts',
+      },
+    ],
+  },
+];
+
+export default options;