@coinbase/wallet-sdk/dist/sign/walletlink/relay/RelayEventManager.js

Coinbase Wallet JavaScript SDK

import { prepend0x } from '../../../core/type/util.js';
export class RelayEventManager {
    constructor() {
        this._nextRequestId = 0;
        this.callbacks = new Map();
    }
    makeRequestId() {
        // max nextId == max int32 for compatibility with mobile
        this._nextRequestId = (this._nextRequestId + 1) % 0x7fffffff;
        const id = this._nextRequestId;
        const idStr = prepend0x(id.toString(16));
        // unlikely that this will ever be an issue, but just to be safe
        const callback = this.callbacks.get(idStr);
        if (callback) {
            this.callbacks.delete(idStr);
        }
        return id;
    }
}
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