chore(package): update bundle

- add sourcemap
- main file change from './build/index.cjs.js' to './index.js'

.gitignore

@@ -1,5 +1,6 @@
 # Build
-build/
+index.js
+index.js.map
 
 # Logs
 logs

package.json

@@ -2,10 +2,10 @@
   "name": "react-pirate",
   "version": "1.1.2",
   "description": "Sets of useful hooks for react 16.7 and above",
-  "main": "./build/index.cjs.js",
+  "main": "index.js",
   "scripts": {
     "test": "test",
-    "prepublish": "rollup -c"
+    "prepublish": "rollup -c -m"
   },
   "repository": {
     "type": "git",
@@ -22,7 +22,9 @@
   },
   "homepage": "https://github.com/dispix/react-pirate#readme",
   "files": [
-    "build",
+    "index.d.ts",
+    "index.js",
+    "index.js.map",
     "package.json",
     "README.md"
   ],
@@ -34,4 +36,4 @@
     "rollup-plugin-commonjs": "^9.2.0",
     "rollup-plugin-node-resolve": "^3.4.0"
   }
-}
+}

rollup.config.js

@@ -1,10 +1,12 @@
 import commonjs from 'rollup-plugin-commonjs'
 import resolve from 'rollup-plugin-node-resolve'
 
+import packagejson from './package.json'
+
 export default {
   input: 'src/index.js',
   output: {
-    file: 'build/index.cjs.js',
+    file: packagejson.main,
     format: 'cjs',
   },
   plugins: [resolve(), commonjs()],