poly-get v0.4.0

Poly-get

A tiny library for getting json anywhere. Works in Node.js, the browser, cloudflare workers, etc.

import get from 'poly-get';

const todo = await get("https://jsonplaceholder.typicode.com/todos/1");
console.log(todo);
// { userId: 1, id: 1, title: 'delectus aut autem', completed: false }

It is so small that you can just copy/paste it in your code:

// poly-get - A tiny fetch() universal library for getting JSON by francisco.io
export default async(e,r={})=>{if("undefined"!=typeof fetch){const t=await fetch(e,r);if(!t.ok)throw new Error(`Error ${t.status} retrieving ${e}`);return t.json()}if("undefined"!=typeof require)return new Promise((t,o)=>{require("https").get(e,r,r=>{if(r.setEncoding("utf8"),r.statusCode<200||r.statusCode>=300)return o(new Error(`Error ${r.statusCode} retrieving ${e}`));let n="";r.on("data",e=>n+=e),r.on("end",()=>t(JSON.parse(n)))}).on("error",o)});throw new Error("fetch() is not available, please polyfill it")};

// Make a GET HTTP response and parse the JSON response
export default async (url, options = {}) => {
  // Try first with fetch() - browser, worker, polyfilled, etc
  if (typeof fetch !== "undefined") {
    const res = await fetch(url, options);
    if (!res.ok) throw new Error(`Error ${res.status} retrieving ${url}`);
    return res.json();
  }

  // Now try with Node.js, which needs to be promisified
  if (typeof require !== "undefined") {
    return new Promise((resolve, reject) => {
      const handler = res => {
        res.setEncoding("utf8");
        if (res.statusCode < 200 || res.statusCode >= 300) {
          return reject(new Error(`Error ${res.statusCode} retrieving ${url}`));
        }
        let data = "";
        res.on("data", chunk => (data += chunk));
        res.on("end", () => resolve(JSON.parse(data)));
      };
      require("https")
        .get(url, options, handler)
        .on("error", reject);
    });
  }

  // No supported method was found, display the warning
  throw new Error("fetch() is not available, please polyfill it");
};