conventional-recommended-bump.js

const conventionalRecommendedBump = require('conventional-recommended-bump');
const SCOPE = 'button';

conventionalRecommendedBump({
  whatBump: function(commits) {
    var level = 2;
    var breakings = 0;
    var features = 0;

    commits.forEach(function (commit) {

      // Inser      
      if (commit.scope !== SCOPE) {
        return;
      }

      if (commit.notes.length > 0) {
        breakings += commit.notes.length;
        level = 0;
      } else if (commit.type === 'feat') {
        features += 1;
        if (level === 2) {
          level = 1;
        }
      }
    });

    return {
      level: level,
      reason: 'There are ' + breakings + ' BREAKING CHANGES and ' + features + ' features'
    };
  }
}, function (err, result) {
  console.log(err)
  console.log(result.releaseType);
  //=> 'major'
});