superagent/lib/agent-base.js

elegant & feature rich browser / node HTTP with a fluent API

function Agent() {
  this._defaults = [];
}

["use", "on", "once", "set", "query", "type", "accept", "auth", "withCredentials", "sortQuery", "retry", "ok", "redirects",
 "timeout", "buffer", "serialize", "parse", "ca", "key", "pfx", "cert"].forEach(fn => {
  /** Default setting for all requests from this agent */
  Agent.prototype[fn] = function(...args) {
    this._defaults.push({fn, args});
    return this;
  }
});

Agent.prototype._setDefaults = function(req) {
    this._defaults.forEach(def => {
      req[def.fn].apply(req, def.args);
    });
};

module.exports = Agent;