resolve requests immediately on request interceptor?

Summary

I’m using a global request interceptor. I want to be able to decide whether to send the request or to resolve them with a particular data immediately from the interceptor (or maybe else where).

Snipet

axios.interceptors.request.use(config => {
  if (shouldNotSend) {
    // I don't want to continue sending this request
    // instead I want to resolve this immediately
    return Promise.resolve(data);
  }

  return {
    ...config,
    headers: {
      ...config.headers,
      customHeader: 'custom header value'
    }
  };
});

Context

• axios version: 0.18.0
• Environment: node v10.5.0, chrome 67.0.3396.99, MacOS High Sierra 10.13.5

[Feaman]

I made it with adapter. If there is some redis cache - api get cached data, otherwise starts real request.

const self = this
const defaultAdapter = axios.defaults.adapter
axios.defaults.adapter = function (config) {
  return new Promise((resolve, reject) => {
    function fetch () {
      const axiosWithoutAdapter = axios.create(Object.assign(config, { adapter: defaultAdapter }))
      axiosWithoutAdapter.request(config)
        .then(response => {
          resolve(response)
        })
        .catch(error => reject(error))
    }
​
    return self.$apiCache.get(config.url + JSON.stringify(config.params))
      .then(data => {
        if (data) {
          return Promise.resolve({
            data,
            status: 200,
            statusText: 'OK',
            headers: {},
            config: config,
            request: {}
          })
        } else {
          return fetch()
        }
      })
      .catch(fetch)
  })
}

[zaklampert]

I want to conditionally either return custom data (from a redis cache) or perform the request. Do I do this with an interceptor or an adapter?