diff --git a/package.json b/package.json
index 9fb2bc8..ef8b0da 100644
--- a/package.json
+++ b/package.json
@@ -43,8 +43,10 @@
     "typescript": "^5.0.2"
   },
   "scripts": {
-    "build": "tsc",
-    "test": "node --test",
+    "clean-check": "tsc --build --clean",
+    "prepublishOnly": "npm run clean-check && tsc --build",
+    "postpublish": "npm run clean-check",
+    "test": "npm run clean-check && node --test",
     "format-code": "prettier --write \"*.js\" \"(test|lib)/*.js\"",
     "format-code-staged": "pretty-quick --staged --pattern \"*.js\" --pattern \"(test|lib)/*.js\"",
     "coverage": "c8 --reporter=lcov npm run test"
diff --git a/test/index.test.js b/test/index.test.js
index 55720b8..3631a91 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -83,7 +83,7 @@ test('accountAdd()', async (t) => {
   const contentsBefore = fs.readFileSync(file, 'utf-8')
   assert.strictEqual(contentsBefore, JSON.stringify([[token, promise]]))
 
-  const dbBefore = [...local.db.msgs()].map(({data}) => data)
+  const dbBefore = [...local.db.msgs()].map(({ data }) => data)
   assert.equal(dbBefore.length, 1)
   assert.equal(dbBefore[0].action, 'add')
   assert.equal(dbBefore[0].add.key.algorithm, 'ed25519')
@@ -103,7 +103,7 @@ test('accountAdd()', async (t) => {
   })
   assert.strictEqual(result1, true)
 
-  const dbAfter = [...local.db.msgs()].map(({data}) => data)
+  const dbAfter = [...local.db.msgs()].map(({ data }) => data)
   assert.equal(dbAfter.length, 2)
   assert.equal(dbAfter[0].action, 'add')
   assert.equal(dbAfter[0].add.key.algorithm, 'ed25519')