uiwjs / uiwjs/react-codemirror

onChange not detecting a change when a value is pasted ontop of another value

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Dominant language
TypeScript
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Description

When using the component, I noticed that when I try to paste a value ontop of another value, the component doesn't detect a change. If the first value is deleted first or if there is a space placed after the component, then the onChange works as expected. Not sure if this works for other values, but this is broken with the language set to yaml...

For example if you this:
image
And directly paste an 8 over the 7 (by highlighting the 7 and pasting):
image
The onChange would not be called.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at the component's onChange handling and reproduce the reported case with YAML: select the 7 and paste 8 over it. Trace why the replacement is not reported, then verify that onChange fires for direct replacement as well as deletion-first and trailing-space cases.

Written by the indexing model from the issue text.

Assessment

Tech stack
react, typescript
Domain
frontend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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