request.js

// Learnd From @石濑

// Fetch Data
const request = new Promise(function(resolve, reject) {
  fetch(
    sth, 
    success => resolve('data'),
    fail=> reject('reason')
  );
})

// Apply Some Universal Func Before Return To User
function applyPresets (res, dataPresets, errorPresets) {
  const preseted = dataPresets.reduce((result, preset) => Promise.resolve(result).then(preset), res);
  return errorPresets.reduce((result, preset) => Promise.resolve(result).catch(preset), preseted);
}

// Purely Fetch Data From Server
export function requestMTop ({ api, version = '1.0', data = {}}) {
  return new Promise((resolve, reject) =>
    request({
      api,
      version,
      data
    }, res => resolve(res), error => reject(error))
  );
}

// Pack request with presets
export default function requestDataWithPresets (MTopParams, dataPresets = [], errorPresets = []) {
  return applyPresets(requestMTop(MTopParams), dataPresets, errorPresets);
}