saepenatus/packages/core/node_modules/@ethersproject/providers/src.ts/cloudflare-provider.ts

Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported wallets, framework agnostic modern javascript UI with code splitting, CSS customization, mul

"use strict";

import { Network } from "@ethersproject/networks";
import { UrlJsonRpcProvider } from "./url-json-rpc-provider";

import { Logger } from "@ethersproject/logger";
import { version } from "./_version";
const logger = new Logger(version);

export class CloudflareProvider extends UrlJsonRpcProvider {

    static getApiKey(apiKey: any): any {
        if (apiKey != null) {
            logger.throwArgumentError("apiKey not supported for cloudflare", "apiKey", apiKey);
        }
        return null;
    }

    static getUrl(network: Network, apiKey?: any): string {
        let host = null;
        switch (network.name) {
            case "homestead":
                host = "https://cloudflare-eth.com/";
                break;
            default:
               logger.throwArgumentError("unsupported network", "network", arguments[0]);
        }

        return host;
    }

    async perform(method: string, params: any): Promise<any> {
        // The Cloudflare provider does not support eth_blockNumber,
        // so we get the latest block and pull it from that
        if (method === "getBlockNumber") {
            const block = await super.perform("getBlock", { blockTag: "latest" });
            return block.number;
        }

        return super.perform(method, params);
    }
}