coinbase-pro-node-api/build/src/public.js

Node.js library for Coinbase Pro

import { stringify } from "node:querystring";
import { Headers } from "node-fetch";
import { FetchClient } from "rpc-request";
export const ApiUri = "https://api.exchange.coinbase.com";
export const SandboxApiUri = "https://api-public.sandbox.exchange.coinbase.com";
export const DefaultProductID = "BTC-USD";
export class PublicClient extends FetchClient {
  #product_id;
  #api_url;
  constructor({
    product_id = DefaultProductID,
    sandbox = false,
    apiUri = sandbox ? SandboxApiUri : ApiUri,
  } = {}) {
    super({}, { rejectNotOk: false, transform: "raw", baseUrl: apiUri });
    this.#api_url = new URL(apiUri);
    this.#product_id = product_id;
  }
  get product_id() {
    return this.#product_id;
  }
  get apiUri() {
    return new URL(this.#api_url.toString());
  }
  async fetch(path, options = {}) {
    const headers = new Headers(options.headers);
    if (options.body) {
      headers.set("Content-Type", "application/json");
    }
    const response = await super.fetch(path, {
      ...options,
      headers,
    });
    const text = await response.text();
    const data = PublicClient.#parseJSON(text);
    if (!response.ok) {
      throw new Error(data?.message ?? text);
    }
    return data ?? text;
  }
  getProducts() {
    return this.get("/products");
  }
  getProduct({ product_id = this.product_id } = {}) {
    return this.get(`/products/${product_id}`);
  }
  getOrderBook({ product_id = this.product_id, ...qs } = {}) {
    const url = new URL(`/products/${product_id}/book`, this.apiUri);
    url.search = stringify({ ...qs });
    return this.get(url.toString());
  }
  getTicker({ product_id = this.product_id } = {}) {
    return this.get(`/products/${product_id}/ticker`);
  }
  getTrades({ product_id = this.product_id, ...qs } = {}) {
    const url = new URL(`/products/${product_id}/trades`, this.apiUri);
    url.search = stringify({ ...qs });
    return this.get(url.toString());
  }
  getHistoricRates({ product_id = this.product_id, ...qs }) {
    const url = new URL(`/products/${product_id}/candles`, this.apiUri);
    url.search = stringify({ ...qs });
    return this.get(url.toString());
  }
  get24hrStats({ product_id = this.product_id } = {}) {
    return this.get(`/products/${product_id}/stats`);
  }
  getCurrencies() {
    return this.get("/currencies");
  }
  getCurrency({ id }) {
    return this.get(`/currencies/${id}`);
  }
  getTime() {
    return this.get("/time");
  }
  static #parseJSON(string) {
    let output;
    try {
      return JSON.parse(string);
    } catch {
      return output;
    }
  }
}