diff --git a/package.json b/package.json
index 513fe54c29..2ebd8c0292 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "prepare": "npm run build",
     "dev": "rollup -c -w",
     "pretest": "npm run build",
-    "posttest": "agadoo shared.js",
+    "posttest": "agadoo src/internal/index.js",
     "prepublishOnly": "npm run lint && npm test",
     "prettier": "prettier --write \"src/**/*.ts\""
   },
diff --git a/src/internal/ssr.js b/src/internal/ssr.js
index 021d79aeed..4f44c5a252 100644
--- a/src/internal/ssr.js
+++ b/src/internal/ssr.js
@@ -1,6 +1,6 @@
+export const invalidAttributeNameCharacter = /[\s'">\/=\u{FDD0}-\u{FDEF}\u{FFFE}\u{FFFF}\u{1FFFE}\u{1FFFF}\u{2FFFE}\u{2FFFF}\u{3FFFE}\u{3FFFF}\u{4FFFE}\u{4FFFF}\u{5FFFE}\u{5FFFF}\u{6FFFE}\u{6FFFF}\u{7FFFE}\u{7FFFF}\u{8FFFE}\u{8FFFF}\u{9FFFE}\u{9FFFF}\u{AFFFE}\u{AFFFF}\u{BFFFE}\u{BFFFF}\u{CFFFE}\u{CFFFF}\u{DFFFE}\u{DFFFF}\u{EFFFE}\u{EFFFF}\u{FFFFE}\u{FFFFF}\u{10FFFE}\u{10FFFF}]/u;
 // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2
 // https://infra.spec.whatwg.org/#noncharacter
-export const invalidAttributeNameCharacter = /[\s'">\/=\u{FDD0}-\u{FDEF}\u{FFFE}\u{FFFF}\u{1FFFE}\u{1FFFF}\u{2FFFE}\u{2FFFF}\u{3FFFE}\u{3FFFF}\u{4FFFE}\u{4FFFF}\u{5FFFE}\u{5FFFF}\u{6FFFE}\u{6FFFF}\u{7FFFE}\u{7FFFF}\u{8FFFE}\u{8FFFF}\u{9FFFE}\u{9FFFF}\u{AFFFE}\u{AFFFF}\u{BFFFE}\u{BFFFF}\u{CFFFE}\u{CFFFF}\u{DFFFE}\u{DFFFF}\u{EFFFE}\u{EFFFF}\u{FFFFE}\u{FFFFF}\u{10FFFE}\u{10FFFF}]/u;
 
 export function spread(args) {
 	const attributes = Object.assign({}, ...args);