@absmartly/javascript-sdk/lib/fetch-shim.js

A/B Smartly Javascript SDK

"use strict";

require("core-js/modules/es.promise.js");
require("core-js/modules/es.regexp.exec.js");
require("core-js/modules/es.string.replace.js");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.fetch = void 0;
const errors_1 = require("./errors");
function fetch(url, options) {
  options = options || {};
  return new Promise((resolve, reject) => {
    const request = new XMLHttpRequest();
    const _keys = [];
    const all = [];
    const headers = {};
    const abort = () => {
      request.abort();
    };
    const cleanup = options.signal ? () => {
      var _a;
      return (_a = options.signal) === null || _a === void 0 ? void 0 : _a.removeEventListener("abort", abort);
    } : () => {};
    const response = () => ({
      ok: (request.status / 100 | 0) === 2,
      statusText: request.statusText,
      status: request.status,
      url: request.responseURL,
      text: () => Promise.resolve(request.responseText),
      json: () => Promise.resolve(JSON.parse(request.responseText)),
      blob: () => Promise.resolve(new Blob([request.response])),
      clone: response,
      headers: {
        keys: () => _keys,
        entries: () => all,
        get: n => headers[n.toLowerCase()],
        has: n => n.toLowerCase() in headers
      }
    });
    request.open(options.method || "get", url, true);
    request.onload = () => {
      request.getAllResponseHeaders().replace(/^(.*?):[^\S\n]*([\s\S]*?)$/gm, (m, key, value) => {
        _keys.push(key = key.toLowerCase());
        all.push([key, value]);
        headers[key] = headers[key] ? `${headers[key]},${value}` : value;
        return m;
      });
      cleanup();
      resolve(response());
    };
    if (options.signal) {
      options.signal.addEventListener("abort", abort);
    }
    request.onerror = error => {
      cleanup();
      reject(error);
    };
    request.onabort = () => {
      cleanup();
      reject(new errors_1.AbortError("The user aborted a request."));
    };
    request.withCredentials = options.credentials === "include";
    for (const i in options.headers) {
      request.setRequestHeader(i, options.headers[i]);
    }
    request.send(options.body || null);
  });
}
exports.fetch = fetch;
exports.default = fetch;