Abanda NPM | npm.io

Abanda

Minimal HTTP utility class web compliance (596 bytes).

Features

:helicopter: Global headers
:vertical_traffic_light: Route interceptors
:vertical_traffic_light: Request interceptors
:vertical_traffic_light: Response interceptors
:underage: Resource blacklist

Install

npm i abanda

Use

Global headers

import { http } from "abanda";

http.headers.set("authorization", "Bearer <TOKEN>");
http.headers.set("x-target", "A");

http.fetch("http://localhost:8080").then(response => response.json());

Base href

import { http } from "abanda";

http.base = "http://localhost:8080";

http.fetch("/").then(response => response.json());

Intercept routes

import { http } from "abanda";

http.intercept.route.set(/\/ping$/, async (url, { method, body }) => {
   return new Response(url + method + body {
      status: 201,
      headers: { "content-type": "text/plain" },
   });
});

http.fetch("/ping", { method: "POST", body: "ping" }).then(response => response.text()); // "/pingGETping"

Intercept responses

import { http } from "abanda";

http.intercept.response.add(async (request, response): Promise<Response> => {
   let res: Response = response;

   if (response.status === 403) {
      let ok = false;
      let retries = 1;

      while (retries < 5 || !ok) {
         let r = await fetch(response.url, request); // Use platform fetch inside retries !!
         ok = r.ok;
         res = r;
         retries++;
      }
   }

   return res;
});

http.intercept.response.add(async (request, response): Promise<Response> => {
   let r: Response = response;

   if (response.status === 401) {
      http.headers.set("authorization", "Bearer <NEW_TOKEN>");
      r = await http.fetch(response.url, request); // with new token
   }

   return r;
});

http.fetch("http://localhost:8080").then(response => response.json());

Intercept requests

import { http } from "abanda";

http.intercept.request.add((url, request): Promise<RequestInit> => {
   let headers = request.headers as Headers;
   headers.set("x-test", "B");
   return Promise.resolve(request);
});

http.fetch("http://localhost:8080").then(response => response.json());

Blacklist

import { http } from "abanda";

let resource = "http://localhost:8080/private-endpoint";

http.blacklist.add(resource);

http.fetch(resource).then(response => response.json()); // AbortError