ipfs-web/backend/node_modules/ethers/lib.esm/providers/provider-blockscout.js

/**
 *  [[link-blockscout]] provides a third-party service for connecting to
 *  various blockchains over JSON-RPC.
 *
 *  **Supported Networks**
 *
 *  - Ethereum Mainnet (``mainnet``)
 *  - Sepolia Testnet (``sepolia``)
 *  - Holesky Testnet (``holesky``)
 *  - Ethereum Classic (``classic``)
 *  - Arbitrum (``arbitrum``)
 *  - Base (``base``)
 *  - Base Sepolia Testnet (``base-sepolia``)
 *  - Gnosis (``xdai``)
 *  - Optimism (``optimism``)
 *  - Optimism Sepolia Testnet (``optimism-sepolia``)
 *  - Polygon (``matic``)
 *
 *  @_subsection: api/providers/thirdparty:Blockscout  [providers-blockscout]
 */
import { assertArgument, defineProperties, FetchRequest, isHexString } from "../utils/index.js";
import { Network } from "./network.js";
import { JsonRpcProvider } from "./provider-jsonrpc.js";
function getUrl(name) {
    switch (name) {
        case "mainnet":
            return "https:/\/eth.blockscout.com/api/eth-rpc";
        case "sepolia":
            return "https:/\/eth-sepolia.blockscout.com/api/eth-rpc";
        case "holesky":
            return "https:/\/eth-holesky.blockscout.com/api/eth-rpc";
        case "classic":
            return "https:/\/etc.blockscout.com/api/eth-rpc";
        case "arbitrum":
            return "https:/\/arbitrum.blockscout.com/api/eth-rpc";
        case "base":
            return "https:/\/base.blockscout.com/api/eth-rpc";
        case "base-sepolia":
            return "https:/\/base-sepolia.blockscout.com/api/eth-rpc";
        case "matic":
            return "https:/\/polygon.blockscout.com/api/eth-rpc";
        case "optimism":
            return "https:/\/optimism.blockscout.com/api/eth-rpc";
        case "optimism-sepolia":
            return "https:/\/optimism-sepolia.blockscout.com/api/eth-rpc";
        case "xdai":
            return "https:/\/gnosis.blockscout.com/api/eth-rpc";
    }
    assertArgument(false, "unsupported network", "network", name);
}
/**
 *  The **BlockscoutProvider** connects to the [[link-blockscout]]
 *  JSON-RPC end-points.
 *
 *  By default, a highly-throttled API key is used, which is
 *  appropriate for quick prototypes and simple scripts. To
 *  gain access to an increased rate-limit, it is highly
 *  recommended to [sign up here](link-blockscout).
 */
export class BlockscoutProvider extends JsonRpcProvider {
    /**
     *  The API key.
     */
    apiKey;
    /**
     *  Creates a new **BlockscoutProvider**.
     */
    constructor(_network, apiKey) {
        if (_network == null) {
            _network = "mainnet";
        }
        const network = Network.from(_network);
        if (apiKey == null) {
            apiKey = null;
        }
        const request = BlockscoutProvider.getRequest(network);
        super(request, network, { staticNetwork: network });
        defineProperties(this, { apiKey });
    }
    _getProvider(chainId) {
        try {
            return new BlockscoutProvider(chainId, this.apiKey);
        }
        catch (error) { }
        return super._getProvider(chainId);
    }
    isCommunityResource() {
        return (this.apiKey === null);
    }
    getRpcRequest(req) {
        // Blockscout enforces the TAG argument for estimateGas
        const resp = super.getRpcRequest(req);
        if (resp && resp.method === "eth_estimateGas" && resp.args.length == 1) {
            resp.args = resp.args.slice();
            resp.args.push("latest");
        }
        return resp;
    }
    getRpcError(payload, _error) {
        const error = _error ? _error.error : null;
        // Blockscout currently drops the VM result and replaces it with a
        // human-readable string, so we need to make it machine-readable.
        if (error && error.code === -32015 && !isHexString(error.data || "", true)) {
            const panicCodes = {
                "assert(false)": "01",
                "arithmetic underflow or overflow": "11",
                "division or modulo by zero": "12",
                "out-of-bounds array access; popping on an empty array": "31",
                "out-of-bounds access of an array or bytesN": "32"
            };
            let panicCode = "";
            if (error.message === "VM execution error.") {
                // eth_call passes this message
                panicCode = panicCodes[error.data] || "";
            }
            else if (panicCodes[error.message || ""]) {
                panicCode = panicCodes[error.message || ""];
            }
            if (panicCode) {
                error.message += ` (reverted: ${error.data})`;
                error.data = "0x4e487b7100000000000000000000000000000000000000000000000000000000000000" + panicCode;
            }
        }
        else if (error && error.code === -32000) {
            if (error.message === "wrong transaction nonce") {
                error.message += " (nonce too low)";
            }
        }
        return super.getRpcError(payload, _error);
    }
    /**
     *  Returns a prepared request for connecting to %%network%%
     *  with %%apiKey%%.
     */
    static getRequest(network) {
        const request = new FetchRequest(getUrl(network.name));
        request.allowGzip = true;
        return request;
    }
}
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