/** * A **Network** encapsulates the various properties required to * interact with a specific chain. * * @_subsection: api/providers:Networks [networks] */ import { accessListify } from "../transaction/index.js"; import { getBigInt, assert, assertArgument } from "../utils/index.js"; import { EnsPlugin, FetchUrlFeeDataNetworkPlugin, GasCostPlugin } from "./plugins-network.js"; /* * * * // Networks which operation against an L2 can use this plugin to // specify how to access L1, for the purpose of resolving ENS, // for example. export class LayerOneConnectionPlugin extends NetworkPlugin { readonly provider!: Provider; // @TODO: Rename to ChainAccess and allow for connecting to any chain constructor(provider: Provider) { super("org.ethers.plugins.layer-one-connection"); defineProperties(this, { provider }); } clone(): LayerOneConnectionPlugin { return new LayerOneConnectionPlugin(this.provider); } } */ const Networks = new Map(); /** * A **Network** provides access to a chain's properties and allows * for plug-ins to extend functionality. */ export class Network { #name; #chainId; #plugins; /** * Creates a new **Network** for %%name%% and %%chainId%%. */ constructor(name, chainId) { this.#name = name; this.#chainId = getBigInt(chainId); this.#plugins = new Map(); } /** * Returns a JSON-compatible representation of a Network. */ toJSON() { return { name: this.name, chainId: String(this.chainId) }; } /** * The network common name. * * This is the canonical name, as networks migh have multiple * names. */ get name() { return this.#name; } set name(value) { this.#name = value; } /** * The network chain ID. */ get chainId() { return this.#chainId; } set chainId(value) { this.#chainId = getBigInt(value, "chainId"); } /** * Returns true if %%other%% matches this network. Any chain ID * must match, and if no chain ID is present, the name must match. * * This method does not currently check for additional properties, * such as ENS address or plug-in compatibility. */ matches(other) { if (other == null) { return false; } if (typeof (other) === "string") { try { return (this.chainId === getBigInt(other)); } catch (error) { } return (this.name === other); } if (typeof (other) === "number" || typeof (other) === "bigint") { try { return (this.chainId === getBigInt(other)); } catch (error) { } return false; } if (typeof (other) === "object") { if (other.chainId != null) { try { return (this.chainId === getBigInt(other.chainId)); } catch (error) { } return false; } if (other.name != null) { return (this.name === other.name); } return false; } return false; } /** * Returns the list of plugins currently attached to this Network. */ get plugins() { return Array.from(this.#plugins.values()); } /** * Attach a new %%plugin%% to this Network. The network name * must be unique, excluding any fragment. */ attachPlugin(plugin) { if (this.#plugins.get(plugin.name)) { throw new Error(`cannot replace existing plugin: ${plugin.name} `); } this.#plugins.set(plugin.name, plugin.clone()); return this; } /** * Return the plugin, if any, matching %%name%% exactly. Plugins * with fragments will not be returned unless %%name%% includes * a fragment. */ getPlugin(name) { return (this.#plugins.get(name)) || null; } /** * Gets a list of all plugins that match %%name%%, with otr without * a fragment. */ getPlugins(basename) { return (this.plugins.filter((p) => (p.name.split("#")[0] === basename))); } /** * Create a copy of this Network. */ clone() { const clone = new Network(this.name, this.chainId); this.plugins.forEach((plugin) => { clone.attachPlugin(plugin.clone()); }); return clone; } /** * Compute the intrinsic gas required for a transaction. * * A GasCostPlugin can be attached to override the default * values. */ computeIntrinsicGas(tx) { const costs = this.getPlugin("org.ethers.plugins.network.GasCost") || (new GasCostPlugin()); let gas = costs.txBase; if (tx.to == null) { gas += costs.txCreate; } if (tx.data) { for (let i = 2; i < tx.data.length; i += 2) { if (tx.data.substring(i, i + 2) === "00") { gas += costs.txDataZero; } else { gas += costs.txDataNonzero; } } } if (tx.accessList) { const accessList = accessListify(tx.accessList); for (const addr in accessList) { gas += costs.txAccessListAddress + costs.txAccessListStorageKey * accessList[addr].storageKeys.length; } } return gas; } /** * Returns a new Network for the %%network%% name or chainId. */ static from(network) { injectCommonNetworks(); // Default network if (network == null) { return Network.from("mainnet"); } // Canonical name or chain ID if (typeof (network) === "number") { network = BigInt(network); } if (typeof (network) === "string" || typeof (network) === "bigint") { const networkFunc = Networks.get(network); if (networkFunc) { return networkFunc(); } if (typeof (network) === "bigint") { return new Network("unknown", network); } assertArgument(false, "unknown network", "network", network); } // Clonable with network-like abilities if (typeof (network.clone) === "function") { const clone = network.clone(); //if (typeof(network.name) !== "string" || typeof(network.chainId) !== "number") { //} return clone; } // Networkish if (typeof (network) === "object") { assertArgument(typeof (network.name) === "string" && typeof (network.chainId) === "number", "invalid network object name or chainId", "network", network); const custom = new Network((network.name), (network.chainId)); if (network.ensAddress || network.ensNetwork != null) { custom.attachPlugin(new EnsPlugin(network.ensAddress, network.ensNetwork)); } //if ((network).layerOneConnection) { // custom.attachPlugin(new LayerOneConnectionPlugin((network).layerOneConnection)); //} return custom; } assertArgument(false, "invalid network", "network", network); } /** * Register %%nameOrChainId%% with a function which returns * an instance of a Network representing that chain. */ static register(nameOrChainId, networkFunc) { if (typeof (nameOrChainId) === "number") { nameOrChainId = BigInt(nameOrChainId); } const existing = Networks.get(nameOrChainId); if (existing) { assertArgument(false, `conflicting network for ${JSON.stringify(existing.name)}`, "nameOrChainId", nameOrChainId); } Networks.set(nameOrChainId, networkFunc); } } // We don't want to bring in formatUnits because it is backed by // FixedNumber and we want to keep Networks tiny. The values // included by the Gas Stations are also IEEE 754 with lots of // rounding issues and exceed the strict checks formatUnits has. function parseUnits(_value, decimals) { const value = String(_value); if (!value.match(/^[0-9.]+$/)) { throw new Error(`invalid gwei value: ${_value}`); } // Break into [ whole, fraction ] const comps = value.split("."); if (comps.length === 1) { comps.push(""); } // More than 1 decimal point or too many fractional positions if (comps.length !== 2) { throw new Error(`invalid gwei value: ${_value}`); } // Pad the fraction to 9 decimalplaces while (comps[1].length < decimals) { comps[1] += "0"; } // Too many decimals and some non-zero ending, take the ceiling if (comps[1].length > 9) { let frac = BigInt(comps[1].substring(0, 9)); if (!comps[1].substring(9).match(/^0+$/)) { frac++; } comps[1] = frac.toString(); } return BigInt(comps[0] + comps[1]); } // Used by Polygon to use a gas station for fee data function getGasStationPlugin(url) { return new FetchUrlFeeDataNetworkPlugin(url, async (fetchFeeData, provider, request) => { // Prevent Cloudflare from blocking our request in node.js request.setHeader("User-Agent", "ethers"); let response; try { const [_response, _feeData] = await Promise.all([ request.send(), fetchFeeData() ]); response = _response; const payload = response.bodyJson.standard; const feeData = { gasPrice: _feeData.gasPrice, maxFeePerGas: parseUnits(payload.maxFee, 9), maxPriorityFeePerGas: parseUnits(payload.maxPriorityFee, 9), }; return feeData; } catch (error) { assert(false, `error encountered with polygon gas station (${JSON.stringify(request.url)})`, "SERVER_ERROR", { request, response, error }); } }); } // See: https://chainlist.org let injected = false; function injectCommonNetworks() { if (injected) { return; } injected = true; /// Register popular Ethereum networks function registerEth(name, chainId, options) { const func = function () { const network = new Network(name, chainId); // We use 0 to disable ENS if (options.ensNetwork != null) { network.attachPlugin(new EnsPlugin(null, options.ensNetwork)); } network.attachPlugin(new GasCostPlugin()); (options.plugins || []).forEach((plugin) => { network.attachPlugin(plugin); }); return network; }; // Register the network by name and chain ID Network.register(name, func); Network.register(chainId, func); if (options.altNames) { options.altNames.forEach((name) => { Network.register(name, func); }); } } registerEth("mainnet", 1, { ensNetwork: 1, altNames: ["homestead"] }); registerEth("ropsten", 3, { ensNetwork: 3 }); registerEth("rinkeby", 4, { ensNetwork: 4 }); registerEth("goerli", 5, { ensNetwork: 5 }); registerEth("kovan", 42, { ensNetwork: 42 }); registerEth("sepolia", 11155111, { ensNetwork: 11155111 }); registerEth("classic", 61, {}); registerEth("classicKotti", 6, {}); registerEth("arbitrum", 42161, { ensNetwork: 1, }); registerEth("arbitrum-goerli", 421613, {}); registerEth("base", 8453, { ensNetwork: 1 }); registerEth("base-goerli", 84531, {}); registerEth("base-sepolia", 84532, {}); registerEth("bnb", 56, { ensNetwork: 1 }); registerEth("bnbt", 97, {}); registerEth("linea", 59144, { ensNetwork: 1 }); registerEth("linea-goerli", 59140, {}); registerEth("matic", 137, { ensNetwork: 1, plugins: [ getGasStationPlugin("https:/\/gasstation.polygon.technology/v2") ] }); registerEth("matic-mumbai", 80001, { altNames: ["maticMumbai", "maticmum"], plugins: [ getGasStationPlugin("https:/\/gasstation-testnet.polygon.technology/v2") ] }); registerEth("optimism", 10, { ensNetwork: 1, plugins: [] }); registerEth("optimism-goerli", 420, {}); registerEth("xdai", 100, { ensNetwork: 1 }); } //# sourceMappingURL=network.js.map