old_contents: import ConfigFieldBaseType from './base';
  
  class NumberType extends ConfigFieldBaseType {
    constructor(min, max) {
      super();
  
      this.validators.push(val => typeof val === 'number');
  
      if (min !== null && min !== undefined) {
        this.validators.push(val => val > min);
      }
  
      if (max !== null && max !== undefined) {
        this.validators.push(val => val < max);
      }
    }
  }
  
  module.exports = NumberType;
  
new_contents: import BaseType from './base';
  
  class NumberType extends BaseType {
    constructor({ min, max } = {}) {
      super();
  
      this.transformators.pre.push(val => Number(val));
  
      this.validators.push(val => !isNaN(val));
  
      this.validators.push(val =>
        ((typeof min === 'number') ? val >= min : true));
  
      this.validators.push(val =>
        ((typeof max === 'number') ? val <= max : true));
    }
  }
  
  module.exports = NumberType;
  
subject: Edit validation and transformation process in Number type