diff --git a/package.json b/package.json
index 80e04469..bd983a08 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
   },
   "scripts": {
     "lint": "tslint -p . -t verbose",
+    "prebuild": "node ./scripts/pre-build.mjs",
     "build:esm": "tsc -p ./tsconfig.esm.json && node ./scripts/add-extensions.mjs",
     "build:cjs": "tsc -p ./tsconfig.cjs.json",
     "build": "yarn build:esm && yarn build:cjs && node ./scripts/add-nested-package-json.mjs",
@@ -30,6 +31,7 @@
     "scriptbundle": "browserify ./dist/cjs/nsfwjs.js -s nsfwjs -o ./dist/browser/bundle.js",
     "minbundle": "terser dist/browser/bundle.js -c -m -o dist/browser/nsfwjs.min.js",
     "bundle": "yarn build && yarn scriptbundle && yarn minbundle",
+    "prepare": "yarn bundle",
     "shipit:precheck": "if [ \"$npm_config_user_agent\" != \"${npm_config_user_agent#*yarn}\" ]; then echo 'Use `npm run shipit` instead of yarn.' && exit 1;  fi",
     "shipit": "npm run shipit:precheck && yarn bundle && np"
   },
diff --git a/scripts/pre-build.mjs b/scripts/pre-build.mjs
new file mode 100644
index 00000000..88a60cd0
--- /dev/null
+++ b/scripts/pre-build.mjs
@@ -0,0 +1,5 @@
+import { rmSync } from "fs";
+
+const dir = "./dist";
+
+rmSync(dir, { recursive: true, force: true });
diff --git a/src/index.ts b/src/index.ts
index 33bb9521..f65e9e56 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -32,7 +32,7 @@ export type ClassifyConfig = {
   onFrame?: (result: FrameResult) => any;
 };
 
-interface NSFWJSOptions {
+export interface NSFWJSOptions {
   size?: number;
   type?: string;
 }