@tonyrl/rand-user-agent/dist/index.js

This package is for getting latest agents and randomize it

// src/helpers.ts
var randomElement = function(array) {
  let index = Math.floor(
    Math.random() * (array[Object.keys(array).pop()].maxIndex + 1)
  );
  for (let [userAgent, indexes] of Object.entries(array)) {
    if (index >= indexes.minIndex && index <= indexes.maxIndex) {
      return userAgent;
    }
  }
  return "No Agent Found";
};
var JSONIsFrequency = function(json) {
  const [userAgent, frequency] = Object.entries(json[Object.keys(json)[0]])[0];
  return !isNaN(frequency);
};
var JSONfrequencyNormalize = function(content2) {
  let contentParsed = {};
  for (let key in content2) {
    contentParsed[key] = {};
    let sortedFrequencies = Array.from(
      new Set(Object.values(content2[key]))
    ).sort();
    for (let [userAgent, frequency] of Object.entries(content2[key])) {
      contentParsed[key][userAgent] = sortedFrequencies.indexOf(frequency) + 1;
    }
  }
  return contentParsed;
};
var JSONinterval = function(content2) {
  let contentParsed = {};
  for (let key in content2) {
    contentParsed[key] = {};
    let minIndex = 0;
    for (let [userAgent, frequency] of Object.entries(content2[key])) {
      contentParsed[key][userAgent] = {
        minIndex,
        maxIndex: minIndex + frequency - 1
      };
      minIndex = minIndex + frequency;
    }
  }
  return contentParsed;
};

// src/index.ts
import * as fs from "fs";
import * as path from "path";
import { fileURLToPath } from "url";
var __filename2 = fileURLToPath(import.meta.url);
var __dirname2 = path.dirname(__filename2);
var content = JSON.parse(
  fs.readFileSync(path.join(__dirname2, "../data/user-agents.json"), "utf8")
);
content = JSONfrequencyNormalize(content);
if (JSONIsFrequency(content)) {
  content = JSONinterval(content);
}
var randUserAgent = function(device, browser = null, os = null) {
  let options = [];
  const keys = Object.keys(content);
  for (const index in keys) {
    let filter = true;
    if (keys[index].indexOf(device) === -1) {
      filter = false;
    }
    if (browser && keys[index].indexOf(browser) === -1) {
      filter = false;
    }
    if (os && keys[index].indexOf(os) === -1) {
      filter = false;
    }
    if (filter) {
      options.push(keys[index]);
    }
  }
  if (options.length === 0) {
    return randomElement(content);
  }
  return randomElement(
    content[options[Math.floor(Math.random() * options.length)]]
  );
};
export {
  randUserAgent
};