umami/lib/web.js

export const post = (url, params) =>
  fetch(url, {
    method: 'post',
    cache: 'no-cache',
    headers: {
      Accept: 'application/json',
      'Content-Type': 'application/json',
    },
    body: JSON.stringify(params),
  }).then(res => (res.status === 200 ? res.json() : null));

export const hook = (_this, method, callback) => {
  const orig = _this[method];

  return (...args) => {
    callback.apply(null, args);

    return orig.apply(_this, args);
  };
};