redux/src/utils/warning.js

Predictable state container for JavaScript apps

/**
 * Prints a warning in the console if it exists.
 *
 * @param {String} message The warning message.
 * @returns {void}
 */
export default function warning(message) {
  /* eslint-disable no-console */
  if (typeof console !== 'undefined' && typeof console.error === 'function') {
    console.error(message)
  }
  /* eslint-enable no-console */
  try {
    // This error was thrown as a convenience so that you can use this stack
    // to find the callsite that caused this warning to fire.
    throw new Error(message)
  /* eslint-disable no-empty */
  } catch (e) { }
  /* eslint-enable no-empty */
}