lib/display/tile-layer.js
function prefixMatch (p) {
  var i = -1
  var n = p.length
  var s = document.body.style
  while (++i < n) {
    if (p[i] + 'Transform' in s) return '-' + p[i].toLowerCase() + '-'
  }
  return ''
}
function prefixMatch (p) {
  var i = -1
  var n = p.length
  var s = document.body.style
  while (++i < n) {
    if (p[i] + 'Transform' in s) return '-' + p[i].toLowerCase() + '-'
  }
  return ''
}
function prefixMatch ( p ) { var i = - 1 var n = p . length var s = document . body . style while ( ++ i < n ) { if ( p [ i ] + 'Transform' in s ) return '-' + p [ i ] . toLowerCase ( ) + '-' } return '' }
Match the transform prefix
Match the transform prefix