"use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.Contract = exports.BaseContract = exports.resolveArgs = exports.copyOverrides = void 0; const index_js_1 = require("../abi/index.js"); const index_js_2 = require("../address/index.js"); // import from provider.ts instead of index.ts to prevent circular dep // from EtherscanProvider const provider_js_1 = require("../providers/provider.js"); const index_js_3 = require("../utils/index.js"); const wrappers_js_1 = require("./wrappers.js"); const BN_0 = BigInt(0); function canCall(value) { return (value && typeof (value.call) === "function"); } function canEstimate(value) { return (value && typeof (value.estimateGas) === "function"); } function canResolve(value) { return (value && typeof (value.resolveName) === "function"); } function canSend(value) { return (value && typeof (value.sendTransaction) === "function"); } function getResolver(value) { if (value != null) { if (canResolve(value)) { return value; } if (value.provider) { return value.provider; } } return undefined; } class PreparedTopicFilter { #filter; fragment; constructor(contract, fragment, args) { (0, index_js_3.defineProperties)(this, { fragment }); if (fragment.inputs.length < args.length) { throw new Error("too many arguments"); } // Recursively descend into args and resolve any addresses const runner = getRunner(contract.runner, "resolveName"); const resolver = canResolve(runner) ? runner : null; this.#filter = (async function () { const resolvedArgs = await Promise.all(fragment.inputs.map((param, index) => { const arg = args[index]; if (arg == null) { return null; } return param.walkAsync(args[index], (type, value) => { if (type === "address") { if (Array.isArray(value)) { return Promise.all(value.map((v) => (0, index_js_2.resolveAddress)(v, resolver))); } return (0, index_js_2.resolveAddress)(value, resolver); } return value; }); })); return contract.interface.encodeFilterTopics(fragment, resolvedArgs); })(); } getTopicFilter() { return this.#filter; } } // A = Arguments passed in as a tuple // R = The result type of the call (i.e. if only one return type, // the qualified type, otherwise Result) // D = The type the default call will return (i.e. R for view/pure, // TransactionResponse otherwise) //export interface ContractMethod = Array, R = any, D extends R | ContractTransactionResponse = ContractTransactionResponse> { function getRunner(value, feature) { if (value == null) { return null; } if (typeof (value[feature]) === "function") { return value; } if (value.provider && typeof (value.provider[feature]) === "function") { return value.provider; } return null; } function getProvider(value) { if (value == null) { return null; } return value.provider || null; } /** * @_ignore: */ async function copyOverrides(arg, allowed) { // Make sure the overrides passed in are a valid overrides object const _overrides = index_js_1.Typed.dereference(arg, "overrides"); (0, index_js_3.assertArgument)(typeof (_overrides) === "object", "invalid overrides parameter", "overrides", arg); // Create a shallow copy (we'll deep-ify anything needed during normalizing) const overrides = (0, provider_js_1.copyRequest)(_overrides); (0, index_js_3.assertArgument)(overrides.to == null || (allowed || []).indexOf("to") >= 0, "cannot override to", "overrides.to", overrides.to); (0, index_js_3.assertArgument)(overrides.data == null || (allowed || []).indexOf("data") >= 0, "cannot override data", "overrides.data", overrides.data); // Resolve any from if (overrides.from) { overrides.from = overrides.from; } return overrides; } exports.copyOverrides = copyOverrides; /** * @_ignore: */ async function resolveArgs(_runner, inputs, args) { // Recursively descend into args and resolve any addresses const runner = getRunner(_runner, "resolveName"); const resolver = canResolve(runner) ? runner : null; return await Promise.all(inputs.map((param, index) => { return param.walkAsync(args[index], (type, value) => { value = index_js_1.Typed.dereference(value, type); if (type === "address") { return (0, index_js_2.resolveAddress)(value, resolver); } return value; }); })); } exports.resolveArgs = resolveArgs; function buildWrappedFallback(contract) { const populateTransaction = async function (overrides) { // If an overrides was passed in, copy it and normalize the values const tx = (await copyOverrides(overrides, ["data"])); tx.to = await contract.getAddress(); if (tx.from) { tx.from = await (0, index_js_2.resolveAddress)(tx.from, getResolver(contract.runner)); } const iface = contract.interface; const noValue = ((0, index_js_3.getBigInt)((tx.value || BN_0), "overrides.value") === BN_0); const noData = ((tx.data || "0x") === "0x"); if (iface.fallback && !iface.fallback.payable && iface.receive && !noData && !noValue) { (0, index_js_3.assertArgument)(false, "cannot send data to receive or send value to non-payable fallback", "overrides", overrides); } (0, index_js_3.assertArgument)(iface.fallback || noData, "cannot send data to receive-only contract", "overrides.data", tx.data); // Only allow payable contracts to set non-zero value const payable = iface.receive || (iface.fallback && iface.fallback.payable); (0, index_js_3.assertArgument)(payable || noValue, "cannot send value to non-payable fallback", "overrides.value", tx.value); // Only allow fallback contracts to set non-empty data (0, index_js_3.assertArgument)(iface.fallback || noData, "cannot send data to receive-only contract", "overrides.data", tx.data); return tx; }; const staticCall = async function (overrides) { const runner = getRunner(contract.runner, "call"); (0, index_js_3.assert)(canCall(runner), "contract runner does not support calling", "UNSUPPORTED_OPERATION", { operation: "call" }); const tx = await populateTransaction(overrides); try { return await runner.call(tx); } catch (error) { if ((0, index_js_3.isCallException)(error) && error.data) { throw contract.interface.makeError(error.data, tx); } throw error; } }; const send = async function (overrides) { const runner = contract.runner; (0, index_js_3.assert)(canSend(runner), "contract runner does not support sending transactions", "UNSUPPORTED_OPERATION", { operation: "sendTransaction" }); const tx = await runner.sendTransaction(await populateTransaction(overrides)); const provider = getProvider(contract.runner); // @TODO: the provider can be null; make a custom dummy provider that will throw a // meaningful error return new wrappers_js_1.ContractTransactionResponse(contract.interface, provider, tx); }; const estimateGas = async function (overrides) { const runner = getRunner(contract.runner, "estimateGas"); (0, index_js_3.assert)(canEstimate(runner), "contract runner does not support gas estimation", "UNSUPPORTED_OPERATION", { operation: "estimateGas" }); return await runner.estimateGas(await populateTransaction(overrides)); }; const method = async (overrides) => { return await send(overrides); }; (0, index_js_3.defineProperties)(method, { _contract: contract, estimateGas, populateTransaction, send, staticCall }); return method; } function buildWrappedMethod(contract, key) { const getFragment = function (...args) { const fragment = contract.interface.getFunction(key, args); (0, index_js_3.assert)(fragment, "no matching fragment", "UNSUPPORTED_OPERATION", { operation: "fragment", info: { key, args } }); return fragment; }; const populateTransaction = async function (...args) { const fragment = getFragment(...args); // If an overrides was passed in, copy it and normalize the values let overrides = {}; if (fragment.inputs.length + 1 === args.length) { overrides = await copyOverrides(args.pop()); if (overrides.from) { overrides.from = await (0, index_js_2.resolveAddress)(overrides.from, getResolver(contract.runner)); } } if (fragment.inputs.length !== args.length) { throw new Error("internal error: fragment inputs doesn't match arguments; should not happen"); } const resolvedArgs = await resolveArgs(contract.runner, fragment.inputs, args); return Object.assign({}, overrides, await (0, index_js_3.resolveProperties)({ to: contract.getAddress(), data: contract.interface.encodeFunctionData(fragment, resolvedArgs) })); }; const staticCall = async function (...args) { const result = await staticCallResult(...args); if (result.length === 1) { return result[0]; } return result; }; const send = async function (...args) { const runner = contract.runner; (0, index_js_3.assert)(canSend(runner), "contract runner does not support sending transactions", "UNSUPPORTED_OPERATION", { operation: "sendTransaction" }); const tx = await runner.sendTransaction(await populateTransaction(...args)); const provider = getProvider(contract.runner); // @TODO: the provider can be null; make a custom dummy provider that will throw a // meaningful error return new wrappers_js_1.ContractTransactionResponse(contract.interface, provider, tx); }; const estimateGas = async function (...args) { const runner = getRunner(contract.runner, "estimateGas"); (0, index_js_3.assert)(canEstimate(runner), "contract runner does not support gas estimation", "UNSUPPORTED_OPERATION", { operation: "estimateGas" }); return await runner.estimateGas(await populateTransaction(...args)); }; const staticCallResult = async function (...args) { const runner = getRunner(contract.runner, "call"); (0, index_js_3.assert)(canCall(runner), "contract runner does not support calling", "UNSUPPORTED_OPERATION", { operation: "call" }); const tx = await populateTransaction(...args); let result = "0x"; try { result = await runner.call(tx); } catch (error) { if ((0, index_js_3.isCallException)(error) && error.data) { throw contract.interface.makeError(error.data, tx); } throw error; } const fragment = getFragment(...args); return contract.interface.decodeFunctionResult(fragment, result); }; const method = async (...args) => { const fragment = getFragment(...args); if (fragment.constant) { return await staticCall(...args); } return await send(...args); }; (0, index_js_3.defineProperties)(method, { name: contract.interface.getFunctionName(key), _contract: contract, _key: key, getFragment, estimateGas, populateTransaction, send, staticCall, staticCallResult, }); // Only works on non-ambiguous keys (refined fragment is always non-ambiguous) Object.defineProperty(method, "fragment", { configurable: false, enumerable: true, get: () => { const fragment = contract.interface.getFunction(key); (0, index_js_3.assert)(fragment, "no matching fragment", "UNSUPPORTED_OPERATION", { operation: "fragment", info: { key } }); return fragment; } }); return method; } function buildWrappedEvent(contract, key) { const getFragment = function (...args) { const fragment = contract.interface.getEvent(key, args); (0, index_js_3.assert)(fragment, "no matching fragment", "UNSUPPORTED_OPERATION", { operation: "fragment", info: { key, args } }); return fragment; }; const method = function (...args) { return new PreparedTopicFilter(contract, getFragment(...args), args); }; (0, index_js_3.defineProperties)(method, { name: contract.interface.getEventName(key), _contract: contract, _key: key, getFragment }); // Only works on non-ambiguous keys (refined fragment is always non-ambiguous) Object.defineProperty(method, "fragment", { configurable: false, enumerable: true, get: () => { const fragment = contract.interface.getEvent(key); (0, index_js_3.assert)(fragment, "no matching fragment", "UNSUPPORTED_OPERATION", { operation: "fragment", info: { key } }); return fragment; } }); return method; } // The combination of TypeScrype, Private Fields and Proxies makes // the world go boom; so we hide variables with some trickery keeping // a symbol attached to each BaseContract which its sub-class (even // via a Proxy) can reach and use to look up its internal values. const internal = Symbol.for("_ethersInternal_contract"); const internalValues = new WeakMap(); function setInternal(contract, values) { internalValues.set(contract[internal], values); } function getInternal(contract) { return internalValues.get(contract[internal]); } function isDeferred(value) { return (value && typeof (value) === "object" && ("getTopicFilter" in value) && (typeof (value.getTopicFilter) === "function") && value.fragment); } async function getSubInfo(contract, event) { let topics; let fragment = null; // Convert named events to topicHash and get the fragment for // events which need deconstructing. if (Array.isArray(event)) { const topicHashify = function (name) { if ((0, index_js_3.isHexString)(name, 32)) { return name; } const fragment = contract.interface.getEvent(name); (0, index_js_3.assertArgument)(fragment, "unknown fragment", "name", name); return fragment.topicHash; }; // Array of Topics and Names; e.g. `[ "0x1234...89ab", "Transfer(address)" ]` topics = event.map((e) => { if (e == null) { return null; } if (Array.isArray(e)) { return e.map(topicHashify); } return topicHashify(e); }); } else if (event === "*") { topics = [null]; } else if (typeof (event) === "string") { if ((0, index_js_3.isHexString)(event, 32)) { // Topic Hash topics = [event]; } else { // Name or Signature; e.g. `"Transfer", `"Transfer(address)"` fragment = contract.interface.getEvent(event); (0, index_js_3.assertArgument)(fragment, "unknown fragment", "event", event); topics = [fragment.topicHash]; } } else if (isDeferred(event)) { // Deferred Topic Filter; e.g. `contract.filter.Transfer(from)` topics = await event.getTopicFilter(); } else if ("fragment" in event) { // ContractEvent; e.g. `contract.filter.Transfer` fragment = event.fragment; topics = [fragment.topicHash]; } else { (0, index_js_3.assertArgument)(false, "unknown event name", "event", event); } // Normalize topics and sort TopicSets topics = topics.map((t) => { if (t == null) { return null; } if (Array.isArray(t)) { const items = Array.from(new Set(t.map((t) => t.toLowerCase())).values()); if (items.length === 1) { return items[0]; } items.sort(); return items; } return t.toLowerCase(); }); const tag = topics.map((t) => { if (t == null) { return "null"; } if (Array.isArray(t)) { return t.join("|"); } return t; }).join("&"); return { fragment, tag, topics }; } async function hasSub(contract, event) { const { subs } = getInternal(contract); return subs.get((await getSubInfo(contract, event)).tag) || null; } async function getSub(contract, operation, event) { // Make sure our runner can actually subscribe to events const provider = getProvider(contract.runner); (0, index_js_3.assert)(provider, "contract runner does not support subscribing", "UNSUPPORTED_OPERATION", { operation }); const { fragment, tag, topics } = await getSubInfo(contract, event); const { addr, subs } = getInternal(contract); let sub = subs.get(tag); if (!sub) { const address = (addr ? addr : contract); const filter = { address, topics }; const listener = (log) => { let foundFragment = fragment; if (foundFragment == null) { try { foundFragment = contract.interface.getEvent(log.topics[0]); } catch (error) { } } // If fragment is null, we do not deconstruct the args to emit if (foundFragment) { const _foundFragment = foundFragment; const args = fragment ? contract.interface.decodeEventLog(fragment, log.data, log.topics) : []; emit(contract, event, args, (listener) => { return new wrappers_js_1.ContractEventPayload(contract, listener, event, _foundFragment, log); }); } else { emit(contract, event, [], (listener) => { return new wrappers_js_1.ContractUnknownEventPayload(contract, listener, event, log); }); } }; let starting = []; const start = () => { if (starting.length) { return; } starting.push(provider.on(filter, listener)); }; const stop = async () => { if (starting.length == 0) { return; } let started = starting; starting = []; await Promise.all(started); provider.off(filter, listener); }; sub = { tag, listeners: [], start, stop }; subs.set(tag, sub); } return sub; } // We use this to ensure one emit resolves before firing the next to // ensure correct ordering (note this cannot throw and just adds the // notice to the event queu using setTimeout). let lastEmit = Promise.resolve(); async function _emit(contract, event, args, payloadFunc) { await lastEmit; const sub = await hasSub(contract, event); if (!sub) { return false; } const count = sub.listeners.length; sub.listeners = sub.listeners.filter(({ listener, once }) => { const passArgs = Array.from(args); if (payloadFunc) { passArgs.push(payloadFunc(once ? null : listener)); } try { listener.call(contract, ...passArgs); } catch (error) { } return !once; }); if (sub.listeners.length === 0) { sub.stop(); getInternal(contract).subs.delete(sub.tag); } return (count > 0); } async function emit(contract, event, args, payloadFunc) { try { await lastEmit; } catch (error) { } const resultPromise = _emit(contract, event, args, payloadFunc); lastEmit = resultPromise; return await resultPromise; } const passProperties = ["then"]; class BaseContract { /** * The target to connect to. * * This can be an address, ENS name or any [[Addressable]], such as * another contract. To get the resovled address, use the ``getAddress`` * method. */ target; /** * The contract Interface. */ interface; /** * The connected runner. This is generally a [[Provider]] or a * [[Signer]], which dictates what operations are supported. * * For example, a **Contract** connected to a [[Provider]] may * only execute read-only operations. */ runner; /** * All the Events available on this contract. */ filters; /** * @_ignore: */ [internal]; /** * The fallback or receive function if any. */ fallback; /** * Creates a new contract connected to %%target%% with the %%abi%% and * optionally connected to a %%runner%% to perform operations on behalf * of. */ constructor(target, abi, runner, _deployTx) { (0, index_js_3.assertArgument)(typeof (target) === "string" || (0, index_js_2.isAddressable)(target), "invalid value for Contract target", "target", target); if (runner == null) { runner = null; } const iface = index_js_1.Interface.from(abi); (0, index_js_3.defineProperties)(this, { target, runner, interface: iface }); Object.defineProperty(this, internal, { value: {} }); let addrPromise; let addr = null; let deployTx = null; if (_deployTx) { const provider = getProvider(runner); // @TODO: the provider can be null; make a custom dummy provider that will throw a // meaningful error deployTx = new wrappers_js_1.ContractTransactionResponse(this.interface, provider, _deployTx); } let subs = new Map(); // Resolve the target as the address if (typeof (target) === "string") { if ((0, index_js_3.isHexString)(target)) { addr = target; addrPromise = Promise.resolve(target); } else { const resolver = getRunner(runner, "resolveName"); if (!canResolve(resolver)) { throw (0, index_js_3.makeError)("contract runner does not support name resolution", "UNSUPPORTED_OPERATION", { operation: "resolveName" }); } addrPromise = resolver.resolveName(target).then((addr) => { if (addr == null) { throw (0, index_js_3.makeError)("an ENS name used for a contract target must be correctly configured", "UNCONFIGURED_NAME", { value: target }); } getInternal(this).addr = addr; return addr; }); } } else { addrPromise = target.getAddress().then((addr) => { if (addr == null) { throw new Error("TODO"); } getInternal(this).addr = addr; return addr; }); } // Set our private values setInternal(this, { addrPromise, addr, deployTx, subs }); // Add the event filters const filters = new Proxy({}, { get: (target, prop, receiver) => { // Pass important checks (like `then` for Promise) through if (typeof (prop) === "symbol" || passProperties.indexOf(prop) >= 0) { return Reflect.get(target, prop, receiver); } try { return this.getEvent(prop); } catch (error) { if (!(0, index_js_3.isError)(error, "INVALID_ARGUMENT") || error.argument !== "key") { throw error; } } return undefined; }, has: (target, prop) => { // Pass important checks (like `then` for Promise) through if (passProperties.indexOf(prop) >= 0) { return Reflect.has(target, prop); } return Reflect.has(target, prop) || this.interface.hasEvent(String(prop)); } }); (0, index_js_3.defineProperties)(this, { filters }); (0, index_js_3.defineProperties)(this, { fallback: ((iface.receive || iface.fallback) ? (buildWrappedFallback(this)) : null) }); // Return a Proxy that will respond to functions return new Proxy(this, { get: (target, prop, receiver) => { if (typeof (prop) === "symbol" || prop in target || passProperties.indexOf(prop) >= 0) { return Reflect.get(target, prop, receiver); } // Undefined properties should return undefined try { return target.getFunction(prop); } catch (error) { if (!(0, index_js_3.isError)(error, "INVALID_ARGUMENT") || error.argument !== "key") { throw error; } } return undefined; }, has: (target, prop) => { if (typeof (prop) === "symbol" || prop in target || passProperties.indexOf(prop) >= 0) { return Reflect.has(target, prop); } return target.interface.hasFunction(prop); } }); } /** * Return a new Contract instance with the same target and ABI, but * a different %%runner%%. */ connect(runner) { return new BaseContract(this.target, this.interface, runner); } /** * Return a new Contract instance with the same ABI and runner, but * a different %%target%%. */ attach(target) { return new BaseContract(target, this.interface, this.runner); } /** * Return the resolved address of this Contract. */ async getAddress() { return await getInternal(this).addrPromise; } /** * Return the deployed bytecode or null if no bytecode is found. */ async getDeployedCode() { const provider = getProvider(this.runner); (0, index_js_3.assert)(provider, "runner does not support .provider", "UNSUPPORTED_OPERATION", { operation: "getDeployedCode" }); const code = await provider.getCode(await this.getAddress()); if (code === "0x") { return null; } return code; } /** * Resolve to this Contract once the bytecode has been deployed, or * resolve immediately if already deployed. */ async waitForDeployment() { // We have the deployement transaction; just use that (throws if deployement fails) const deployTx = this.deploymentTransaction(); if (deployTx) { await deployTx.wait(); return this; } // Check for code const code = await this.getDeployedCode(); if (code != null) { return this; } // Make sure we can subscribe to a provider event const provider = getProvider(this.runner); (0, index_js_3.assert)(provider != null, "contract runner does not support .provider", "UNSUPPORTED_OPERATION", { operation: "waitForDeployment" }); return new Promise((resolve, reject) => { const checkCode = async () => { try { const code = await this.getDeployedCode(); if (code != null) { return resolve(this); } provider.once("block", checkCode); } catch (error) { reject(error); } }; checkCode(); }); } /** * Return the transaction used to deploy this contract. * * This is only available if this instance was returned from a * [[ContractFactory]]. */ deploymentTransaction() { return getInternal(this).deployTx; } /** * Return the function for a given name. This is useful when a contract * method name conflicts with a JavaScript name such as ``prototype`` or * when using a Contract programatically. */ getFunction(key) { if (typeof (key) !== "string") { key = key.format(); } const func = buildWrappedMethod(this, key); return func; } /** * Return the event for a given name. This is useful when a contract * event name conflicts with a JavaScript name such as ``prototype`` or * when using a Contract programatically. */ getEvent(key) { if (typeof (key) !== "string") { key = key.format(); } return buildWrappedEvent(this, key); } /** * @_ignore: */ async queryTransaction(hash) { throw new Error("@TODO"); } /* // @TODO: this is a non-backwards compatible change, but will be added // in v7 and in a potential SmartContract class in an upcoming // v6 release async getTransactionReceipt(hash: string): Promise { const provider = getProvider(this.runner); assert(provider, "contract runner does not have a provider", "UNSUPPORTED_OPERATION", { operation: "queryTransaction" }); const receipt = await provider.getTransactionReceipt(hash); if (receipt == null) { return null; } return new ContractTransactionReceipt(this.interface, provider, receipt); } */ /** * Provide historic access to event data for %%event%% in the range * %%fromBlock%% (default: ``0``) to %%toBlock%% (default: ``"latest"``) * inclusive. */ async queryFilter(event, fromBlock, toBlock) { if (fromBlock == null) { fromBlock = 0; } if (toBlock == null) { toBlock = "latest"; } const { addr, addrPromise } = getInternal(this); const address = (addr ? addr : (await addrPromise)); const { fragment, topics } = await getSubInfo(this, event); const filter = { address, topics, fromBlock, toBlock }; const provider = getProvider(this.runner); (0, index_js_3.assert)(provider, "contract runner does not have a provider", "UNSUPPORTED_OPERATION", { operation: "queryFilter" }); return (await provider.getLogs(filter)).map((log) => { let foundFragment = fragment; if (foundFragment == null) { try { foundFragment = this.interface.getEvent(log.topics[0]); } catch (error) { } } if (foundFragment) { try { return new wrappers_js_1.EventLog(log, this.interface, foundFragment); } catch (error) { return new wrappers_js_1.UndecodedEventLog(log, error); } } return new provider_js_1.Log(log, provider); }); } /** * Add an event %%listener%% for the %%event%%. */ async on(event, listener) { const sub = await getSub(this, "on", event); sub.listeners.push({ listener, once: false }); sub.start(); return this; } /** * Add an event %%listener%% for the %%event%%, but remove the listener * after it is fired once. */ async once(event, listener) { const sub = await getSub(this, "once", event); sub.listeners.push({ listener, once: true }); sub.start(); return this; } /** * Emit an %%event%% calling all listeners with %%args%%. * * Resolves to ``true`` if any listeners were called. */ async emit(event, ...args) { return await emit(this, event, args, null); } /** * Resolves to the number of listeners of %%event%% or the total number * of listeners if unspecified. */ async listenerCount(event) { if (event) { const sub = await hasSub(this, event); if (!sub) { return 0; } return sub.listeners.length; } const { subs } = getInternal(this); let total = 0; for (const { listeners } of subs.values()) { total += listeners.length; } return total; } /** * Resolves to the listeners subscribed to %%event%% or all listeners * if unspecified. */ async listeners(event) { if (event) { const sub = await hasSub(this, event); if (!sub) { return []; } return sub.listeners.map(({ listener }) => listener); } const { subs } = getInternal(this); let result = []; for (const { listeners } of subs.values()) { result = result.concat(listeners.map(({ listener }) => listener)); } return result; } /** * Remove the %%listener%% from the listeners for %%event%% or remove * all listeners if unspecified. */ async off(event, listener) { const sub = await hasSub(this, event); if (!sub) { return this; } if (listener) { const index = sub.listeners.map(({ listener }) => listener).indexOf(listener); if (index >= 0) { sub.listeners.splice(index, 1); } } if (listener == null || sub.listeners.length === 0) { sub.stop(); getInternal(this).subs.delete(sub.tag); } return this; } /** * Remove all the listeners for %%event%% or remove all listeners if * unspecified. */ async removeAllListeners(event) { if (event) { const sub = await hasSub(this, event); if (!sub) { return this; } sub.stop(); getInternal(this).subs.delete(sub.tag); } else { const { subs } = getInternal(this); for (const { tag, stop } of subs.values()) { stop(); subs.delete(tag); } } return this; } /** * Alias for [on]. */ async addListener(event, listener) { return await this.on(event, listener); } /** * Alias for [off]. */ async removeListener(event, listener) { return await this.off(event, listener); } /** * Create a new Class for the %%abi%%. */ static buildClass(abi) { class CustomContract extends BaseContract { constructor(address, runner = null) { super(address, abi, runner); } } return CustomContract; } ; /** * Create a new BaseContract with a specified Interface. */ static from(target, abi, runner) { if (runner == null) { runner = null; } const contract = new this(target, abi, runner); return contract; } } exports.BaseContract = BaseContract; function _ContractBase() { return BaseContract; } /** * A [[BaseContract]] with no type guards on its methods or events. */ class Contract extends _ContractBase() { } exports.Contract = Contract; //# sourceMappingURL=contract.js.map