app/assets/javascripts/vue_shared/components/lib/utils/diff_utils.js


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function trimFirstCharOfLineContent(text) {
  if (!text) {
    return text;
  }

  return text.replace(/^( |\+|-)/, '');
}

function cleanSuggestionLine(line = {}) {
  return {
    ...line,
    text: trimFirstCharOfLineContent(line.text),
    rich_text: trimFirstCharOfLineContent(line.rich_text),
  };
}

export function selectDiffLines(lines) {
  return lines.filter(line => line.type !== 'match').map(line => cleanSuggestionLine(line));
}