🤖 This is an automatic issue report for Web IDL syntax error. 🤖 [webidl2.js](https://github.com/w3c/webidl2.js) says: ``` Syntax error at line 6 in web-animations-2,15, since `interface AnimationTrigger`: CSSKeywordValue or DOMString) rangeStart = "normal"; ^ ``` > Error: Unterminated attribute, expected `;` Please file an issue at https://github.com/saschanaz/webidl-updater/issues/new if you think this is invalid or should be enhanced.