@nktkas/hyperliquid/esm/src/api/exchange/_methods/_base/_nonce.js

Hyperliquid API SDK for all major JS runtimes, written in TypeScript.

/**
 * Nonce manager for generating unique nonces per wallet address and network.
 * Uses lazy cleanup: removes entries when Date.now() > lastNonce.
 */
class NonceManager {
    #map = new Map();
    getNonce(key) {
        const now = Date.now();
        this.#cleanup(now);
        const lastNonce = this.#map.get(key) ?? 0;
        const nonce = now > lastNonce ? now : lastNonce + 1;
        this.#map.set(key, nonce);
        return nonce;
    }
    #cleanup(now) {
        for (const [key, lastNonce] of this.#map) {
            if (now > lastNonce) {
                this.#map.delete(key);
            }
        }
    }
}
/** Default nonce manager, used when custom nonceManager is not provided in config. */
export const defaultNonceManager = /* @__PURE__ */ new NonceManager();
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