git ssb

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module.exports = ExpanderHook
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function ExpanderHook (needsExpand) {
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  return expander.bind(null, needsExpand)
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}
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function expander (needsExpand, element) {
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  var handler = { handleEvent, needsExpand, element }
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  handleEvent.bind(handler)
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  if (element.querySelector('img')) {
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    // just in case images are still loading
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    setTimeout(handleEvent.bind(handler), 200)
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    element.addEventListener('mouseover', handler)
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    return element.removeEventListener.bind(element, 'mouseover', handler)
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  }
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}
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function handleEvent (ev) {
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  var { needsExpand, element } = this
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  if (!needsExpand()) {
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    if (element.firstElementChild.clientHeight > element.clientHeight) {
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      needsExpand.set(true)
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    }
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  }
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}
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