[GitHub] [incubator-annotator] ziodave opened a new issue #111: range.startContainer is undefined

[GitBox]

ziodave opened a new issue #111:
URL: https://github.com/apache/incubator-annotator/issues/111


   It looks that this change [1] is raising an exception that 
`range.startContainer is undefined`:
   
   
![image](https://user-images.githubusercontent.com/11438/123346537-d908c100-d558-11eb-8fd8-0f0af859799e.png)
   
   Because `range` is not a `Range` but an `Element`.
   
   This is the call stack:
   
   
![image](https://user-images.githubusercontent.com/11438/123346584-f2117200-d558-11eb-80df-51d9f05594b4.png)
   
   This is my test code:
   
   ```
   async function highlightMatcher(matcher: any) {
     const matches = matcher(
       // @ts-ignore
       document.body
     );
     for await (const match of matches) {
       highlightRange(match);
     }
   }
   
   highlightMatcher(
     createCssSelectorMatcher({
       value: "#my-div",
       type: "CssSelector",
     })
   );
   ```
   
   [1] 
https://github.com/apache/incubator-annotator/commit/7f9461da824297947196a34ac5c3af7e52e2caf7#diff-1a23dff7a2e2636f389f030fcf64a2a1f6b4f8c278a0c2b231a910906b4454a3R67


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