Smart JSON Editor transformer for Decimal(38,18)

decismal_38_18_transformer.js

// https://github.com/SmartJSONEditor/PublicDocuments/wiki/ValueTransformers
var ValueTransformer = function () {
    
  this.displayName = "Decimal(38,18)";
  this.shortDescription = "https://spark.apache.org/docs/2.4.0/api/java/org/apache/spark/sql/types/Decimal.html"
  this.transform = function (inputValue, jsonValue, arrayIndex, parameters, info) {
    var result           = '';
    var characters       = '0123456789';
    var charactersLength = characters.length;
    var precision		 = 38;
    var scale			 = 18;
    var afterDot		 = false;
    var actualScale		 = 0
    for ( var i = 0; i < precision; i++ ) {
      if (!afterDot && i > 0 && (i == 10 || (Math.random() * charactersLength) > 8)) {
        result += '.';
        afterDot = true
      }
      result += characters.charAt(Math.floor(Math.random() * charactersLength));
      if (afterDot) {
        actualScale += 1
        
        if (Math.random() * charactersLength > 8) {
          break;
        }
      }
    }
      
    if (actualScale < 18) {
      result += "0".repeat(18 - actualScale)
    }
    return result;
  };
}

function sjeClass() {
  return new ValueTransformer();
}