export function getMetaValue(name) {
  const element = findElement(document.head, `meta[name="${name}"]`);
  if (element) {
    return element.getAttribute('content');
  }
}

export function findElements(root, selector) {
  if (typeof root == 'string') {
    selector = root;
    root = document;
  }
  const elements = root.querySelectorAll(selector);
  return toArray(elements);
}

export function findElement(root, selector) {
  if (typeof root == 'string') {
    selector = root;
    root = document;
  }
  return root.querySelector(selector);
}

export function dispatchEvent(element, type, eventInit = {}) {
  const { disabled } = element;
  const { bubbles, cancelable, detail } = eventInit;
  const event = document.createEvent('Event');

  event.initEvent(type, bubbles || true, cancelable || true);
  event.detail = detail || {};

  try {
    element.disabled = false;
    element.dispatchEvent(event);
  } finally {
    element.disabled = disabled;
  }

  return event;
}

export function toArray(value) {
  if (Array.isArray(value)) {
    return value;
  } else if (Array.from) {
    return Array.from(value);
  } else {
    return [].slice.call(value);
  }
}