google-play-scraper/index.js

scrapes app data from google play store

import * as R from 'ramda';
import { constants } from './lib/constants.js';
import memoizee from 'memoizee';
import appMethod from './lib/app.js';

import list from './lib/list.js';
import search from './lib/search.js';
import suggest from './lib/suggest.js';
import developer from './lib/developer.js';
import reviews from './lib/reviews.js';
import similar from './lib/similar.js';
import permissions from './lib/permissions.js';
import datasafety from './lib/datasafety.js';
import categories from './lib/categories.js';

const methods = {
  app: appMethod,
  list,
  search: R.partial(search, [appMethod]),
  suggest,
  developer,
  reviews,
  similar,
  permissions,
  datasafety,
  categories
};

function memoized (opts) {
  const cacheOpts = Object.assign({
    primitive: true,
    normalizer: JSON.stringify,
    maxAge: 1000 * 60 * 5, // cache for 5 minutes
    max: 1000 // save up to 1k results to avoid memory issues
  }, opts);

  // need to rebuild the methods so they all share the same memoized appMethod
  const doMemoize = (fn) => memoizee(fn, cacheOpts);
  const mAppMethod = memoizee(appMethod, cacheOpts);

  const otherMethods = {
    list,
    search: R.partial(search, [mAppMethod]),
    suggest,
    developer,
    reviews,
    similar,
    permissions,
    datasafety,
    categories
  };

  return Object.assign({ app: mAppMethod },
    constants,
    R.map(doMemoize, otherMethods));
}

export default Object.assign({ memoized }, constants, methods);