🤖 build: Configure microbundle to produce build.

These changes were automatically generated by a transform whose code can be found at:
  - https://github.com/aureooms/rejuvenate/blob/b7b7316fcc320ee7d249b0aa391d9a196c944421/src/transforms/build:use-microbundle.js
Please contact the author of the transform if you believe there was an error.

.codeclimate.yml

@@ -1,4 +1,4 @@
 exclude_patterns:
   - doc/**
-  - lib/**
+  - dist/**
   - test/**

.gitignore

@@ -2,7 +2,7 @@
 !yarn.lock
 
 # Generated files
-/lib
+/dist
 
 # Dependency directory
 node_modules

package.json

@@ -19,12 +19,25 @@
     "structure"
   ],
   "sideEffects": false,
-  "main": "lib/index.js",
+  "source": "src/index.js",
+  "main": "dist/index.js",
+  "module": "dist/index.module.js",
+  "esmodule": "dist/index.modern.js",
+  "umd:main": "dist/index.umd.js",
+  "unpkg": "dist/index.umd.js",
+  "exports": {
+    ".": {
+      "browser": "./dist/index.module.js",
+      "umd": "./dist/index.umd.js",
+      "require": "./dist/index.js",
+      "default": "./dist/index.modern.js"
+    }
+  },
   "files": [
-    "lib"
+    "dist"
   ],
   "scripts": {
-    "build": "rm -rf lib && babel src -d lib",
+    "build": "NODE_ENV=production microbundle",
     "build-docs": "esdoc",
     "build-gh-pages": "npm run build-docs",
     "commit-msg": "commitlint --edit",
@@ -44,7 +57,6 @@
   },
   "devDependencies": {
     "@aureooms/js-heap-spec": "15.0.3",
-    "@babel/cli": "7.13.10",
     "@babel/core": "7.13.10",
     "@babel/preset-env": "7.13.10",
     "@babel/register": "7.13.8",
@@ -63,6 +75,7 @@
     "esdoc-standard-plugin": "1.0.0",
     "fixpack": "4.0.0",
     "husky": "6.0.0",
+    "microbundle": "0.13.0",
     "np": "7.4.0",
     "pinst": "2.1.6",
     "power-assert": "1.6.1",