npm-pd/build/commands/evaluate/popularity.js

A beautiful CLI dashboard for NPM publishers

"use strict";

exports.__esModule = true;
exports.communityInterest = communityInterest;
exports.downloadsAcceleration = downloadsAcceleration;

var _lodash = require("lodash");

var _moment = _interopRequireDefault(require("moment"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function communityInterest(collected) {
  return {
    starsCount: (collected.github ? collected.github.starsCount : 0) + (collected.npm ? collected.npm.starsCount : 0),
    forksCount: collected.github ? collected.github.forksCount : 0,
    subscribersCount: collected.github ? collected.github.subscribersCount : 0,
    contributorsCount: collected.github ? (collected.github.contributors || []).length : 0
  };
}

function downloadsAcceleration(collected) {
  var downloads = collected.npm && collected.npm.downloads;

  if (!downloads) {
    return {
      shortTermAcceleration: 0,
      midTermAcceleration: 0,
      longTermAcceleration: 0
    };
  }

  var range30 = (0, _lodash.find)(downloads, function (range) {
    return _moment["default"].utc(range.to).diff(range.from, 'd') === 30;
  });
  var range90 = (0, _lodash.find)(downloads, function (range) {
    return _moment["default"].utc(range.to).diff(range.from, 'd') === 90;
  });
  var range180 = (0, _lodash.find)(downloads, function (range) {
    return _moment["default"].utc(range.to).diff(range.from, 'd') === 180;
  });
  var range365 = (0, _lodash.find)(downloads, function (range) {
    return _moment["default"].utc(range.to).diff(range.from, 'd') === 365;
  });

  if (!range30 || !range90 || !range180 || !range365) {
    throw new Error('Could not find entry in downloads');
  }

  var mean30 = range30.count / 30;
  var mean90 = range90.count / 90;
  var mean180 = range180.count / 180;
  var mean365 = range365.count / 365;
  return {
    shortTermAcceleration: mean30 - mean90,
    midTermAcceleration: mean90 - mean180,
    longTermAcceleration: mean180 - mean365
  };
}