Bug: Item height validation false positives

[OliverJAsh]

Prerequisites

• I have searched for duplicate or closed issues
• I have read the contributing guidelines

Describe the issue

When using CodeView and __devOnlyValidateItemHeights, on page load we see these console errors:

Reproduction

https://stackblitz.com/edit/vitejs-vite-tfbdr1ha?file=src%2FApp.tsx&terminal=dev

import { CodeView } from "@pierre/diffs/react";
import { parseDiffFromFile, type CodeViewDiffItem } from "@pierre/diffs";

const exampleItem: CodeViewDiffItem = {
  id: "foo",
  type: "diff",
  fileDiff: parseDiffFromFile(
    {
      name: "greeting.ts",
      contents: 'export const greeting = "Hello";',
    },
    {
      name: "greeting.ts",
      contents: 'export const greeting = "Hello, World!";',
    },
  ),
};

function App() {
  return (
    <CodeView
      items={[exampleItem]}
      style={{ height: 600, overflow: "auto" }}
      options={{
        __devOnlyValidateItemHeights: true,
      }}
    />
  );
}

export default App;

What browser(s) are you seeing the problem on?

Chrome

What version of @pierre/diffs are you using?

1.2.7

[amadeus]

Thanks for the report, I'm definitely aware of this, it has to do with a race between the highlighter and worker pool on initialization. So technically it is a valid issue but in practice not very real. I do need to figure out a solve for it better than forcing devs to wait until the worker pool/highlighters are initialized though.