diff --git a/.eslintignore b/.eslintignore
index 3dddf3f6..cb92a946 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,2 +1,3 @@
 dist/*
 node_modules/*
+legacy/index*
diff --git a/.gitignore b/.gitignore
index ef996b00..da15c198 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,7 +16,4 @@ npm-debug.log*
 coverage
 
 # legacy builds
-/legacy/index.cjs
-/legacy/index.cjs.map
-/legacy/index.js
-/legacy/index.js.map
+/legacy/index*
diff --git a/legacy/package.json b/legacy/package.json
index eabede75..8a8e7a82 100644
--- a/legacy/package.json
+++ b/legacy/package.json
@@ -5,7 +5,8 @@
     "module": "./legacy/index.js"
   },
   "scripts": {
-    "unit": "jest -c jest.config.json"
+    "unit": "jest -c jest.config.json",
+    "emitDeclarations": "tsc index.js --allowJs  --skipLibCheck --declaration --emitDeclarationOnly --declarationMap"
   },
   "devDependencies": {
     "@babel/core": "7.17.9",
diff --git a/package.json b/package.json
index 0f01d736..4e2fad8a 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,9 @@
   "scripts": {
     "prepublishOnly": "pnpm test && pnpm build && del ./package && clean-publish",
     "postpublish": "del ./package",
-    "emitDeclarations": "tsc --emitDeclarationOnly",
+    "emitDeclarations:legacy": "cd legacy && pnpm emitDeclarations",
+    "emitDeclarations:base": "tsc --emitDeclarationOnly",
+    "emitDeclarations": "pnpm emitDeclarations:base && pnpm emitDeclarations:legacy",
     "build": "rollup -c & pnpm emitDeclarations",
     "unit": "pnpm unit:base && pnpm unit:legacy",
     "unit:base": "jest -c jest.config.json",