const jsonHash = async (input, init=0) => {
  let result = {};
  let resolvedResults = await Promise.all(
    Object.entries(input).map(async ([key, value]) => {
      if (value instanceof Function) value = value();
      if (value instanceof Promise) value = await value;
      return [key, value]
    })
  );

  for (let [key, value] of resolvedResults) {
    result[key] = value;
  }
  return result;
}

Usage

const name='Hash';	

const hash = await jsonHash({
	    name,
	    post() {
	      return name;
	    },
	    async myNameIs() {
	      return `My Name is ${name}`;
	    },
});
console.log(hash.name, hash.post, hash.myNameIs);