initial commit, add bitget rest api and websockets connector

src/util/requestUtils.ts

@@ -0,0 +1,92 @@
+export interface RestClientOptions {
+  /** Your API key */
+  apiKey?: string;
+
+  /** Your API secret */
+  apiSecret?: string;
+
+  /** The passphrase you set when creating the API Key (NOT your account password) */
+  apiPass?: string;
+
+  /** Set to `true` to connect to testnet. Uses the live environment by default. */
+  // testnet?: boolean;
+
+  /** Override the max size of the request window (in ms) */
+  recvWindow?: number;
+
+  /** Default: false. If true, we'll throw errors if any params are undefined */
+  strictParamValidation?: boolean;
+
+  /**
+   * Optionally override API protocol + domain
+   * e.g baseUrl: 'https://api.bitget.com'
+   **/
+  baseUrl?: string;
+
+  /** Default: true. whether to try and post-process request exceptions (and throw them). */
+  parseExceptions?: boolean;
+}
+
+export function serializeParams<T extends object | undefined = {}>(
+  params: T,
+  strict_validation = false,
+  prefixWith: string = ''
+): string {
+  if (!params) {
+    return '';
+  }
+
+  const queryString = Object.keys(params)
+    .sort()
+    .map((key) => {
+      const value = params[key];
+      if (strict_validation === true && typeof value === 'undefined') {
+        throw new Error(
+          'Failed to sign API request due to undefined parameter'
+        );
+      }
+      return `${key}=${value}`;
+    })
+    .join('&');
+
+  // Only prefix if there's a value
+  return queryString ? prefixWith + queryString : queryString;
+}
+
+export function getRestBaseUrl(
+  useTestnet: boolean,
+  restInverseOptions: RestClientOptions
+): string {
+  const exchangeBaseUrls = {
+    livenet: 'https://api.bitget.com',
+    livenet2: 'https://capi.bitget.com',
+    testnet: 'https://noTestnet',
+  };
+
+  if (restInverseOptions.baseUrl) {
+    return restInverseOptions.baseUrl;
+  }
+
+  if (useTestnet) {
+    return exchangeBaseUrls.testnet;
+  }
+
+  return exchangeBaseUrls.livenet;
+}
+
+export function isWsPong(msg: any): boolean {
+  // bitget
+  if (msg?.data === 'pong') {
+    return true;
+  }
+  return false;
+}
+
+/**
+ * Used to switch how authentication/requests work under the hood (primarily for SPOT since it's different there)
+ */
+export const REST_CLIENT_TYPE_ENUM = {
+  spot: 'spot',
+  futures: 'futures',
+  broker: 'broker',
+} as const;