/**
 * Checks if the value is a string
 * @param value - The value to check
 */
export function isString(value: any): boolean {
  return typeof value === "string" || value instanceof String;
}

/**
 * Checks if the value is an object
 * @param value - The value to check
 */
export function isObject(value: any): boolean {
  return value && typeof value === "object" && value instanceof Object;
}

/**
 * Checks if a MessageAttribute is valid
 * @param messageAttribute - The MessageAttribute to check
 */
export function isMessageAttributeValid(messageAttribute: any): boolean {
  if (!messageAttribute.DataType) {
    throw new Error("A MessageAttribute must have a DataType key");
  }
  if (!isString(messageAttribute.DataType)) {
    throw new Error("The DataType key of a MessageAttribute must be a String");
  }
  return true;
}