From b339e6215c500a65bc2849b680502607200bbb8f Mon Sep 17 00:00:00 2001
From: Yasumasa Ashida <ys.ashida@gmail.com>
Date: Mon, 15 Jun 2026 08:08:54 +0900
Subject: [PATCH] chore: Install core-js

---
 .babelrc       |  3 ++-
 package.json   |  4 +++-
 pnpm-lock.yaml | 16 ++++++++++++++++
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/.babelrc b/.babelrc
index cd16c35..f85ec25 100644
--- a/.babelrc
+++ b/.babelrc
@@ -1,6 +1,7 @@
 {
   "presets": [["@babel/preset-env", {
-    "useBuiltIns": "entry",
+    "useBuiltIns": "usage",
+    "corejs": "3",
     "modules": "cjs",
     "loose": true,
     "targets": {
diff --git a/package.json b/package.json
index f4df653..6f37286 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
         "default": "./dist/umd/bowser.umd.js"
       }
     }
-  },  
+  },
   "repository": {
     "type": "git",
     "url": "git+https://github.com/bowser-js/bowser.git"
@@ -59,6 +59,7 @@
     "babel-plugin-istanbul": "^8.0.0",
     "coveralls": "^3.0.6",
     "docdash": "^1.1.1",
+    "core-js": "^3.49.0",
     "eslint": "^8.57.1",
     "eslint-config-airbnb-base": "^15.0.0",
     "eslint-plugin-ava": "^10.5.0",
@@ -66,6 +67,7 @@
     "gh-pages": "^6.3.0",
     "jsdoc": "^3.6.3",
     "nyc": "^18.0.0",
+    "regenerator-runtime": "^0.14.1",
     "sinon": "^9.0.0",
     "testem": "^3.0.0",
     "tsdown": "^0.22.2",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e7d03b3..7d721b4 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -32,6 +32,9 @@ importers:
       babel-plugin-istanbul:
         specifier: ^8.0.0
         version: 8.0.0
+      core-js:
+        specifier: ^3.49.0
+        version: 3.49.0
       coveralls:
         specifier: ^3.0.6
         version: 3.1.1
@@ -59,6 +62,9 @@ importers:
       nyc:
         specifier: ^18.0.0
         version: 18.0.0
+      regenerator-runtime:
+        specifier: ^0.14.1
+        version: 0.14.1
       sinon:
         specifier: ^9.0.0
         version: 9.2.4
@@ -1517,6 +1523,9 @@ packages:
   core-js-compat@3.49.0:
     resolution: {integrity: sha512-VQXt1jr9cBz03b331DFDCCP90b3fanciLkgiOoy8SBHy06gNf+vQ1A3WFLqG7I8TipYIKeYK9wxd0tUrvHcOZA==}
 
+  core-js@3.49.0:
+    resolution: {integrity: sha512-es1U2+YTtzpwkxVLwAFdSpaIMyQaq0PBgm3YD1W3Qpsn1NAmO3KSgZfu+oGSWVu6NvLHoHCV/aYcsE5wiB7ALg==}
+
   core-util-is@1.0.2:
     resolution: {integrity: sha512-3lqz5YjWTYnW6dlDa5TLaTCcShfar1e40rmcJVwCBJC6mWlFuj0eCHIElmG1g5kyuJ/GD+8Wn4FFCcz4gJPfaQ==}
 
@@ -3251,6 +3260,9 @@ packages:
   regenerate@1.4.2:
     resolution: {integrity: sha512-zrceR/XhGYU/d/opr2EKO7aRHUeiBI8qjtfHqADTwZd6Szfy16la6kqD0MIUs5z5hx6AaKa+PixpPrR289+I0A==}
 
+  regenerator-runtime@0.14.1:
+    resolution: {integrity: sha512-dYnhHh0nJoMfnkZs6GmmhFknAGRrLznOu5nc9ML+EJxGvrx6H7teuevqVqCuPcPK//3eDrrjQhehXVx9cnkGdw==}
+
   regexp.prototype.flags@1.5.4:
     resolution: {integrity: sha512-dYqgNSZbDwkaJ2ceRd9ojCGjBq+mOm9LmtXnAnEGyHhN/5R7iDW2TRw3h+o/jCFxus3P2LfWIIiwowAjANm7IA==}
     engines: {node: '>= 0.4'}
@@ -5544,6 +5556,8 @@ snapshots:
     dependencies:
       browserslist: 4.28.2
 
+  core-js@3.49.0: {}
+
   core-util-is@1.0.2: {}
 
   cors@2.8.6:
@@ -7378,6 +7392,8 @@ snapshots:
 
   regenerate@1.4.2: {}
 
+  regenerator-runtime@0.14.1: {}
+
   regexp.prototype.flags@1.5.4:
     dependencies:
       call-bind: 1.0.9