diff --git a/.changeset/README.md b/.changeset/README.md
deleted file mode 100644
index e5b6d8d..0000000
--- a/.changeset/README.md
+++ /dev/null
@@ -1,8 +0,0 @@
-# Changesets
-
-Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works
-with multi-package repos, or single-package repos to help you version and publish your code. You can
-find the full documentation for it [in our repository](https://github.com/changesets/changesets)
-
-We have a quick list of common questions to get you started engaging with this project in
-[our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)
diff --git a/.changeset/config.json b/.changeset/config.json
deleted file mode 100644
index a7831c0..0000000
--- a/.changeset/config.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "$schema": "https://unpkg.com/@changesets/config@2.1.1/schema.json",
-  "changelog": "@changesets/cli/changelog",
-  "commit": false,
-  "fixed": [],
-  "linked": [],
-  "access": "restricted",
-  "baseBranch": "main",
-  "updateInternalDependencies": "patch",
-  "ignore": []
-}
\ No newline at end of file
diff --git a/__tests__/KoreanNumeral_test.res b/__tests__/KoreanNumeral_test.res
index 5075f72..14723cb 100644
--- a/__tests__/KoreanNumeral_test.res
+++ b/__tests__/KoreanNumeral_test.res
@@ -1,56 +1,55 @@
-open Jest;
+open Jest
 
 describe(`1만 이하 표시`, () => {
-  open Expect;
+  open Expect
 
   test(`KoreanNumeral.fromInt`, () => {
-    let result = KoreanNumeral.fromInt(1234, ());
-    expect(result) |> toBe(`1,234`);
-  });
+    let result = KoreanNumeral.fromInt(1234, ())
+    expect(result)->toBe(`1,234`)
+  })
   test(`KoreanNumeral.fromFloat`, () => {
-    let result = KoreanNumeral.fromFloat(152212525110.0, ());
-    expect(result) |> toBe(`1,522억 1,252만 5,110`);
-  });
+    let result = KoreanNumeral.fromFloat(152212525110.0, ())
+    expect(result)->toBe(`1,522억 1,252만 5,110`)
+  })
   test(`KoreanNumeral.fromInt64`, () => {
-    let result =
-      KoreanNumeral.fromInt64(Int64.of_string("1234567890987654321"), ());
-    expect(result) |> toBe(`123경 4,567조 8,909억 8,765만 4,321`);
-  });
-});
+    let result = KoreanNumeral.fromInt64(Int64.of_string("1234567890987654321"), ())
+    expect(result)->toBe(`123경 4,567조 8,909억 8,765만 4,321`)
+  })
+})
 
 describe(`1만 이하는 절삭`, () => {
-  open Expect;
+  open Expect
 
   test(`1234 => ""`, () => {
-    let result = KoreanNumeral.fromInt(1234, ~drop=1, ());
-    expect(result) |> toBe(``);
-  });
+    let result = KoreanNumeral.fromInt(1234, ~drop=1, ())
+    expect(result)->toBe(``)
+  })
   test(`1234567 => "123만"`, () => {
-    let result = KoreanNumeral.fromInt(1234567, ~drop=1, ());
-    expect(result) |> toBe(`123만`);
-  });
+    let result = KoreanNumeral.fromInt(1234567, ~drop=1, ())
+    expect(result)->toBe(`123만`)
+  })
   test(`1234567890 => "12억 3,456만"`, () => {
-    let result = KoreanNumeral.fromInt(1234567890, ~drop=1, ());
-    expect(result) |> toBe(`12억 3,456만`);
-  });
+    let result = KoreanNumeral.fromInt(1234567890, ~drop=1, ())
+    expect(result)->toBe(`12억 3,456만`)
+  })
   test(`1234567890.1 => "12억 3,456만"`, () => {
-    let result = KoreanNumeral.fromFloat(1234567890.1, ~drop=1, ());
-    expect(result) |> toBe(`12억 3,456만`);
-  });
+    let result = KoreanNumeral.fromFloat(1234567890.1, ~drop=1, ())
+    expect(result)->toBe(`12억 3,456만`)
+  })
   test(`152212525110 => "1,522억 1,252만"`, () => {
-    let result = KoreanNumeral.fromFloat(152212525110.0, ~drop=1, ());
-    expect(result) |> toBe(`1,522억 1,252만`);
-  });
+    let result = KoreanNumeral.fromFloat(152212525110.0, ~drop=1, ())
+    expect(result)->toBe(`1,522억 1,252만`)
+  })
   test(`152212525110 => "1,522억"`, () => {
-    let result = KoreanNumeral.fromFloat(152200005110.0, ~drop=1, ());
-    expect(result) |> toBe(`1,522억`);
-  });
+    let result = KoreanNumeral.fromFloat(152200005110.0, ~drop=1, ())
+    expect(result)->toBe(`1,522억`)
+  })
   test(`220000152212525110.0 => "22경 1,522억 1,252만"`, () => {
-    let result = KoreanNumeral.fromFloat(220000152212525110.0, ~drop=1, ());
-    expect(result) |> toBe(`22경 1,522억 1,252만`);
-  });
+    let result = KoreanNumeral.fromFloat(220000152212525110.0, ~drop=1, ())
+    expect(result)->toBe(`22경 1,522억 1,252만`)
+  })
   test(`1234567890987654321 => "123경 4,567조 8,909억 8,765만"`, () => {
-    let result = KoreanNumeral.fromString("1234567890987654321", ~drop=1, ());
-    expect(result) |> toBe(`123경 4,567조 8,909억 8,765만`);
-  });
-});
+    let result = KoreanNumeral.fromString("1234567890987654321", ~drop=1, ())
+    expect(result)->toBe(`123경 4,567조 8,909억 8,765만`)
+  })
+})
diff --git a/package.json b/package.json
index 0f09190..921b18f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@greenlabs/rescript-korean-numeral",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "description": "ReScript module to convert the number to Korean",
   "scripts": {
     "start": "rescript build -w",
@@ -24,10 +24,7 @@
   },
   "homepage": "https://github.com/green-labs/rescript-korean-numeral#readme",
   "devDependencies": {
-    "@glennsl/bs-jest": "^0.6.0",
-    "rescript": "^10"
-  },
-  "dependencies": {
-    "@changesets/cli": "^2.24.4"
+    "@glennsl/rescript-jest": "^0.10.0",
+    "rescript": "^11"
   }
-}
+}
\ No newline at end of file
diff --git a/bsconfig.json b/rescript.json
similarity index 90%
rename from bsconfig.json
rename to rescript.json
index 6e869e3..e60dd07 100644
--- a/bsconfig.json
+++ b/rescript.json
@@ -19,8 +19,7 @@
     }
   ],
   "suffix": ".bs.js",
-  "refmt": 3,
   "bs-dev-dependencies": [
-    "@glennsl/bs-jest"
+    "@glennsl/rescript-jest"
   ]
 }
\ No newline at end of file
diff --git a/src/KoreanNumeral.res b/src/KoreanNumeral.res
index 1eb3a66..954d643 100644
--- a/src/KoreanNumeral.res
+++ b/src/KoreanNumeral.res
@@ -1,4 +1,4 @@
-@bs.send external toLocaleString: (int, string) => string = "toLocaleString"
+@send external toLocaleString: (int, string) => string = "toLocaleString"
 
 open Belt
 
@@ -20,7 +20,7 @@ let fromInt64 = (num, ~drop=0, ()) => {
   ->List.keep(i => i != "")
   ->List.reverse
   ->List.toArray
-  ->Js.Array.joinWith(" ", _)
+  ->(Js.Array.joinWith(" ", _))
 }
 
 let fromInt = (num, ~drop=0, ()) => {