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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">"use strict";
&nbsp;
module.exports = function paethPredictor(left, above, upLeft) {
  let paeth = left + above - upLeft;
  let pLeft = Math.abs(paeth - left);
  let pAbove = Math.abs(paeth - above);
  let pUpLeft = Math.abs(paeth - upLeft);
&nbsp;
  if (pLeft &lt;= pAbove &amp;&amp; pLeft &lt;= pUpLeft) {
    return left;
  }
  if (pAbove &lt;= pUpLeft) {
    return above;
  }
  return upLeft;
};
&nbsp;</pre></td></tr></table></pre>

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