node-coindesk-api/dist/index.js

Simple module to query the CoinDesk Bitcoin Price Index API

'use strict';

if (!Array.prototype.includes) {
  require('core-js/fn/array/includes');
}

var request = require('./request');
var formatDate = require('./formatDate');

// memoize 1'
function getSupportedCurrencies() {
  return request('/supported-currencies.json');
}

// memoize 1' TTL 15"
function getCurrentPrice(currency) {
  if (!currency) {
    return request('/currentprice.json');
  }

  return request('/currentprice/' + currency + '.json');
}

// memoize 1' TTL 15"
function getHistoricalClosePrices() {
  var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  var index = options.index,
      currency = options.currency,
      start = options.start,
      end = options.end,
      yesterday = options.yesterday;


  return request('/historical/close.json', {
    index: index,
    currency: currency,
    start: start && end && formatDate(start) || undefined,
    end: start && end && formatDate(end) || undefined,
    for: yesterday ? 'yesterday' : undefined
  });
}

module.exports = {
  getCurrentPrice: getCurrentPrice,
  getSupportedCurrencies: getSupportedCurrencies,
  getHistoricalClosePrices: getHistoricalClosePrices
};