diff --git a/.prettierrc.cjs b/.prettierrc.cjs
new file mode 100644
index 0000000000..c264d0d281
--- /dev/null
+++ b/.prettierrc.cjs
@@ -0,0 +1,14 @@
+module.exports = {
+  arrowParens: "avoid",
+  printWidth: 120,
+  trailingComma: "all",
+  useTabs: false,
+  overrides: [
+    {
+      files: "README.md",
+      options: {
+        printWidth: 80,
+      },
+    },
+  ],
+};
diff --git a/bench/package.json b/bench/package.json
index 3129defe87..9cd47e0437 100644
--- a/bench/package.json
+++ b/bench/package.json
@@ -17,5 +17,6 @@
   },
   "devDependencies": {
     "fast-deep-equal": "^3.1.3"
-  }
+  },
+  "prettier": "../.prettierrc.cjs"
 }
diff --git a/bench/snippets/package.json b/bench/snippets/package.json
index b661571828..6244001a8d 100644
--- a/bench/snippets/package.json
+++ b/bench/snippets/package.json
@@ -2,5 +2,6 @@
   "dependencies": {
     "eventemitter3": "^5.0.0",
     "tiny-typed-emitter": "latest"
-  }
+  },
+  "prettier": "../../.prettierrc.cjs"
 }
diff --git a/package.json b/package.json
index b8eadefe1c..07813aaa98 100644
--- a/package.json
+++ b/package.json
@@ -25,5 +25,6 @@
     "@typescript-eslint/parser": "^5.31.0",
     "bun-webkit": "0.0.1-595dd33692e02001631f6c3ab6f2bbb199278d26"
   },
-  "version": "0.0.0"
+  "version": "0.0.0",
+  "prettier": "./.prettierrc.cjs"
 }
diff --git a/test/bun.js/package.json b/test/bun.js/package.json
index 4b47715bb4..709dc6602c 100644
--- a/test/bun.js/package.json
+++ b/test/bun.js/package.json
@@ -5,5 +5,6 @@
     "uuid": "^9.0.0",
     "tiny-typed-emitter": "^1.0.0",
     "svelte": "^3.52.0"
-  }
+  },
+  "prettier": "../../.prettierrc.cjs"
 }
diff --git a/test/snippets/package.json b/test/snippets/package.json
index 0c05b97bea..478234d5c0 100644
--- a/test/snippets/package.json
+++ b/test/snippets/package.json
@@ -10,5 +10,6 @@
     "react-dom": "^17.0.2",
     "redux": "^4.1.1",
     "styled-components": "^5.3.1"
-  }
+  },
+  "prettier": "../../.prettierrc.cjs"
 }