diff --git a/package.json b/package.json
index ff7281f..ba976b3 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
         "type": "vue-tsc --noEmit",
         "lines": "tsx script/lines.ts packages packages-user",
         "build:packages": "vue-tsc --noEmit && tsx script/build-packages.ts",
-        "build:game": "vue-tsc --noEmit && tsx script/build-game.ts",
+        "build:game": "tsx script/declare.ts && vue-tsc --noEmit && tsx script/build-game.ts",
         "build:lib": "vue-tsc --noEmit && tsx script/build-lib.ts",
         "docs:dev": "concurrently -k -n SIDEBAR,VITEPRESS -c blue,green \"tsx docs/.vitepress/api.ts\" \"vitepress dev docs\"",
         "docs:build": "vitepress build docs",
diff --git a/script/dev.ts b/script/dev.ts
index ceb4ddf..bf23ce9 100644
--- a/script/dev.ts
+++ b/script/dev.ts
@@ -559,7 +559,7 @@ async function doDeclaration(type: string, data: string) {
             num2id += '}';
             await writeFile('src/types/source/cls.d.ts', id2cls, 'utf-8');
             await writeFile(
-                'src/source/maps.d.ts',
+                'src/types/source/maps.d.ts',
                 `${id2num}\n${num2id}`,
                 'utf-8'
             );