function sortCorrelationData()

in correlations.js [130:188]

• 48 lines of code
• 5 McCabe index (conditional complexity)

  function sortCorrelationData(correlationData, total_reference, total_group) {
    return correlationData.sort((a, b) => {
      let rule_a_len = Object.keys(a.item).length;
      let rule_b_len = Object.keys(b.item).length;

      if (rule_a_len < rule_b_len) {
        return -1;
      }

      if (rule_a_len > rule_b_len) {
        return 1;
      }

      // Then, sort by percentage difference between signature and
      // overall (using the lower endpoint of the confidence interval
      // of the difference).
      let ciA = null;
      if (a.prior) {
        // If one of the two elements has a prior that alters a rule's
        // distribution significantly, sort by the percentage of the rule
        // given the prior.
        ciA = confidenceInterval(
          a.prior.count_group,
          a.prior.total_group,
          a.prior.count_reference,
          a.prior.total_reference
        );
      } else {
        ciA = confidenceInterval(
          a.count_group,
          total_group,
          a.count_reference,
          total_reference
        );
      }

      let ciB = null;
      if (b.prior) {
        ciB = confidenceInterval(
          b.prior.count_group,
          b.prior.total_group,
          b.prior.count_reference,
          b.prior.total_reference
        );
      } else {
        ciB = confidenceInterval(
          b.count_group,
          total_group,
          b.count_reference,
          total_reference
        );
      }

      return (
        Math.min(Math.abs(ciB[0]), Math.abs(ciB[1])) -
        Math.min(Math.abs(ciA[0]), Math.abs(ciA[1]))
      );
    });
  }