co2-data/src/data/data-helpers.ts

Carbon intensity of 66 countries and a world average updated to 2020

import { ElectricityMapDataResponse, ElectricityMapResult } from '../types';
import { findKeysByCode } from '../country-names';

export const getDataByCode = (dataResponse: ElectricityMapDataResponse, code?: string): ElectricityMapResult => {
  const codesFound: string[] = findKeysByCode(code);
  const result: ElectricityMapResult = {
    code: code || 'ZZ',
    codeList: [],
    co2Intensities: [],
    averageCo2Intensity: 0,
  };
  codesFound.forEach((code) => {
    const countryData = dataResponse.data.countries[code];
    if (countryData?.co2intensity) {
      result.codeList.push(countryData.countryCode);
      result.co2Intensities.push(countryData.co2intensity);
    }
  });
  // Only reduce data from CountryCodes with data
  if (result.co2Intensities.length > 0) {
    result.averageCo2Intensity =
      result.co2Intensities.reduce((a: number, b: number) => a + b) / result.co2Intensities.length;
  }
  return result;
};