Factory function for creating custom Error classes

createCustomErrorClass.js

/* defintion */
const createErrorClass = (name, customConstructor = () => {}) => {
  const ctx = {
    [name]: class extends Error {
      constructor(...args) {
        super(name);
        customConstructor(this, ...args);
        Error.captureStackTrace(this, ctx[name]);
      }
    }
  };

  return ctx[name];
};

/* usage */
const DefinedError = createErrorClass('DefinedError', (e, message) => {
  e.message = message;
});

function log() {
  console.log((new (createErrorClass('InlineError'))()).stack);
  console.log((new DefinedError('runtime error message')).stack);
  console.log((new Error()).stack);
}

log();