light-ning/src/Response.js

(ALPHA) framework without dependecies...

import httpCodes from './httpCodes';

export default class Response {

  res;

  constructor(response) {
    this.res = response;

    return (obj) => {
      let {code, error, data} = obj, {res} = this;

      if (code) res.statusCode = code;

      res.statusMessage = httpCodes[`http_${res.statusCode}`] || res.statusMessage;

      if (error && code) return res.end(JSON.stringify({ error: error, code: res.statusCode }));
      else if (error && !code) {
        throw new Error('response: "error" must sending with "code"');
      }

      if (res.statusCode >= 400 && res.statusCode <= 511) return res.end({ error: res.statusMessage, code: res.statusCode });

      if (data) return res.end(JSON.stringify({ data: data, code: res.statusCode, message: res.statusMessage }));

      res.end();
    }
  }

}