Custom error with cross browser support

CustomError.js

const CustomError = function CustomError() {
  if (Error.captureStackTrace) { // Chrome
    Error.captureStackTrace(this, CustomError);
  } else {
    const err = new Error();
    let processedStack, fileName, lineNumber;

    Object.defineProperties(this, {
      stack: {
        get: function() {
          if (processedStack) {
            return processedStack;
          }

          const stack = err.stack;
          if (!stack) { // IE...
            return;
          }

          processedStack = stack.substr(stack.indexOf('\n') + 1);
          return processedStack;
        }
      },
      fileName: {
        get: function() {
          if (fileName) {
            return fileName;
          }

          const stack = this.stack;
          if (!stack) { // IE...
            return;
          }
          
          const det = /^(.*?)@(.*?):(.*?)$/.exec(stack.split('\n')[1]);
          fileName = det[2];
          lineNumber = det[3];
          return fileName;
        }
      },
      lineNumber: {
        get: function() {
          if (lineNumber) {
            return lineNumber;
          }

          const stack = this.stack;
          if (!stack) { // IE...
            return;
          }
          
          const det = /^(.*?)@(.*?):(.*?)$/.exec(stack.split('\n')[1]);
          fileName = det[2];
          lineNumber = det[3];
          return lineNumber;
        }
      }
    });
  }
}

CustomError.prototype = Object.create(Error.prototype);
CustomError.prototype.constructor = CustomError;