Utils Plaintext.js

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  import { Fragment } from 'react';
 
// based in part on this SO answer: https://codereview.stackexchange.com/a/211511
 
export default function Plaintext({text}) {
  if (text==null) {
    return (<pre data-testid="plaintext-empty"></pre>)
  }
  const textToRender = typeof text === "string" ? text : JSON.stringify(text, null, 2);
  const [firstLine, ...rest] = textToRender.split('\n')
  return (
    <pre data-testid="plaintext">
      <span>{ firstLine }</span>
      {
        rest.map((line, i) => (
          <Fragment key={i}>
            <br />
            <span>{ line }</span>
          </Fragment>
        ))
      }
    </pre>
  );
}