Data Fetching APIs

fetchData(
  source: Source,
  baseSer: TSer,
  ticker: string,
  tframe: TFrame,
  tzone: string,
  startTime?: number,
  limit?: number
): Promise<number>

import { fetchData, Source } from './lib/domain/DataFecther';
import { TSer } from './lib/timeseris/TSer';
import { TFrame } from './lib/timeseris/TFrame';

const baseSer = new TSer();
const tframe = new TFrame('1h'); // 1 hour timeframe

// Fetch Bitcoin data from Binance
const latestTime = await fetchData(
  Source.binance,
  baseSer,
  'BTCUSDT',
  tframe,
  'UTC',
  undefined,  // Auto-calculate start time
  500         // Fetch 500 candles
);

console.log('Latest candle time:', new Date(latestTime));

// Fetch Apple stock data from Yahoo Finance
await fetchData(
  Source.yfinance,
  baseSer,
  'AAPL',
  new TFrame('1d'),
  'America/New_York',
  Date.now() - 365 * 24 * 60 * 60 * 1000,  // 1 year ago
  365  // 365 days
);

fetchSymbolList(
  source: Source,
  filterText: string,
  init: RequestInit
): Promise<{ ticker: string }[]>

import { fetchSymbolList, Source } from './lib/domain/DataFecther';

// Search for Bitcoin symbols on Binance
const binanceSymbols = await fetchSymbolList(
  Source.binance,
  'BTC',
  { signal: abortController.signal }
);

console.log(binanceSymbols);
// Output: [{ ticker: 'BTCUSDT' }, { ticker: 'BTCBUSD' }, ...]

// Search for Apple-related symbols on Yahoo Finance
const yahooSymbols = await fetchSymbolList(
  Source.yfinance,
  'AAPL',
  {}
);

console.log(yahooSymbols);
// Output: [{ ticker: 'AAPL' }, { ticker: 'AAPL.MX' }, ...]

import { Source } from './lib/domain/DataFecther';

// Use enum values
const source = Source.binance;

// Check source type
if (source === Source.yfinance) {
  console.log('Using Yahoo Finance');
} else if (source === Source.binance) {
  console.log('Using Binance');
}

constructor(
  time: number,
  open: number,
  high: number,
  low: number,
  close: number,
  volume: number,
  openTime: number,
  closeTime: number,
  isClosed: boolean
)

import { Kline } from './lib/domain/Kline';

// Create a new kline
const kline = new Kline(
  Date.now(),          // time
  50000,               // open
  50500,               // high
  49800,               // low
  50200,               // close
  1500.5,              // volume
  Date.now() - 3600000, // openTime (1 hour ago)
  Date.now(),          // closeTime
  true                 // isClosed
);

// Access properties
console.log('Close price:', kline.close);
console.log('Value:', kline.value); // Same as close

// Update a real-time kline
kline.isClosed = false;
kline.update(50300, 50); // New price: 50300, volume: 50

// Close the kline
kline.closeIt();

// Serialize to JSON
const json = kline.toJson();
console.log(json);