rollup, browserList, babel config

Author: always-maap

.babelrc

@@ -1,7 +1,7 @@
 {
   "presets": [
     [
-       "@babel/preset-env",
+      "@babel/preset-env",
       {
         "targets": {
           "node": "current"
@@ -10,4 +10,4 @@
     ],
     "@babel/preset-typescript"
   ]
-}
+}

.browserslistrc

@@ -0,0 +1,4 @@
+> 0.25%
+ie 11
+not op_mini all
+not dead

.eslintignore

@@ -0,0 +1,3 @@
+coverage
+dist
+node_modules

.prettierignore

@@ -0,0 +1,3 @@
+coverage
+dist
+node_modules

package.json

@@ -2,10 +2,13 @@
   "name": "@ts-collection/core",
   "version": "0.0.1",
   "description": "collection of algorithm and data structure for typescript",
-  "main": "dist/index.js",
+  "main": "dist/cjs/bundle.cjs.js",
+  "module": "dist/esm/bundle.esm.js",
+  "sideEffects": false,
   "types": "dist",
   "scripts": {
-    "build": "tsc",
+    "prebuild": "rimraf dist",
+    "build": "rollup -c",
     "dev": "nodemon src/index.ts",
     "test": "jest",
     "lint": "eslint src",
@@ -28,6 +31,9 @@
     "@babel/core": "^7.13.8",
     "@babel/preset-env": "^7.13.8",
     "@babel/preset-typescript": "^7.13.0",
+    "@rollup/plugin-babel": "^5.3.0",
+    "@rollup/plugin-commonjs": "^19.0.0",
+    "@rollup/plugin-node-resolve": "^13.0.0",
     "@types/jest": "^26.0.20",
     "@types/node": "^14.6.4",
     "@typescript-eslint/eslint-plugin": "^4.27.0",
@@ -39,6 +45,11 @@
     "jest": "^26.6.3",
     "nodemon": "^2.0.4",
     "prettier": "^2.3.1",
+    "rimraf": "^3.0.2",
+    "rollup": "^2.52.1",
+    "rollup-plugin-size": "^0.2.2",
+    "rollup-plugin-terser": "^7.0.2",
+    "rollup-plugin-visualizer": "^5.5.0",
     "ts-node": "^9.0.0",
     "typescript": "^4.0.2"
   }

rollup.config.js

@@ -0,0 +1,30 @@
+import { babel } from '@rollup/plugin-babel';
+import { nodeResolve } from '@rollup/plugin-node-resolve';
+import size from 'rollup-plugin-size';
+import { visualizer } from 'rollup-plugin-visualizer';
+import { terser } from 'rollup-plugin-terser';
+import commonJs from '@rollup/plugin-commonjs';
+
+const extensions = ['.js', '.ts'];
+
+/** @type {import('rollup').RollupOptions} */
+const options = {
+  input: 'src/index',
+  output: [
+    { file: 'dist/cjs/bundle.cjs.js', format: 'cjs' },
+    { file: 'dist/esm/bundle.esm.js', format: 'esm' },
+    { file: 'dist/umd/bundle.umd.js', format: 'umd', name: 'TSCollection' },
+  ],
+  plugins: [
+    nodeResolve({ extensions }),
+    babel({ exclude: 'node_modules/**', extensions, babelHelpers: 'bundled' }),
+    commonJs(),
+    terser(),
+    size(),
+    visualizer({
+      template: 'treemap',
+    }),
+  ],
+};
+
+export default options;