shithub: hugo

ref: c362634b7d8802ea81b0b4341c800a9f78f7cd7c
dir: /docs/themes/gohugoioTheme/src/js/codeblocks.js/

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let article = document.getElementById('prose')

if (article) {
  let codeBlocks = article.getElementsByTagName('code')
    for (let [key, codeBlock] of Object.entries(codeBlocks)){
    var widthDif = codeBlock.scrollWidth - codeBlock.clientWidth
    if (widthDif > 0)
      codeBlock.parentNode.classList.add('expand')
  }
}