@exodus/ethereumjs-common
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Resources common to all Ethereum implementations
809 lines • 31.3 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Hardfork = exports.Chain = exports.CustomChain = void 0;
const events_1 = require("events");
const crc_32_1 = require("crc-32");
const ethereumjs_util_1 = require("@exodus/ethereumjs-util");
const chains_1 = require("./chains");
const hardforks_1 = require("./hardforks");
const eips_1 = require("./eips");
var CustomChain;
(function (CustomChain) {
/**
* Polygon (Matic) Mainnet
*
* - [Documentation](https://docs.matic.network/docs/develop/network-details/network)
*/
CustomChain["PolygonMainnet"] = "polygon-mainnet";
/**
* Polygon (Matic) Mumbai Testnet
*
* - [Documentation](https://docs.matic.network/docs/develop/network-details/network)
*/
CustomChain["PolygonMumbai"] = "polygon-mumbai";
/**
* Arbitrum Rinkeby Testnet
*
* - [Documentation](https://developer.offchainlabs.com/docs/public_testnet)
*/
CustomChain["ArbitrumRinkebyTestnet"] = "arbitrum-rinkeby-testnet";
/**
* xDai EVM sidechain with a native stable token
*
* - [Documentation](https://www.xdaichain.com/)
*/
CustomChain["xDaiChain"] = "x-dai-chain";
})(CustomChain = exports.CustomChain || (exports.CustomChain = {}));
var Chain;
(function (Chain) {
Chain[Chain["Mainnet"] = 1] = "Mainnet";
Chain[Chain["Ropsten"] = 3] = "Ropsten";
Chain[Chain["Rinkeby"] = 4] = "Rinkeby";
Chain[Chain["Kovan"] = 42] = "Kovan";
Chain[Chain["Goerli"] = 5] = "Goerli";
Chain[Chain["Calaveras"] = 123] = "Calaveras";
})(Chain = exports.Chain || (exports.Chain = {}));
var Hardfork;
(function (Hardfork) {
Hardfork["Chainstart"] = "chainstart";
Hardfork["Homestead"] = "homestead";
Hardfork["Dao"] = "dao";
Hardfork["TangerineWhistle"] = "tangerineWhistle";
Hardfork["SpuriousDragon"] = "spuriousDragon";
Hardfork["Byzantium"] = "byzantium";
Hardfork["Constantinople"] = "constantinople";
Hardfork["Petersburg"] = "petersburg";
Hardfork["Istanbul"] = "istanbul";
Hardfork["MuirGlacier"] = "muirGlacier";
Hardfork["Berlin"] = "berlin";
Hardfork["London"] = "london";
Hardfork["Shanghai"] = "shanghai";
})(Hardfork = exports.Hardfork || (exports.Hardfork = {}));
/**
* Common class to access chain and hardfork parameters and to provide
* a unified and shared view on the network and hardfork state.
*
* Use the {@link Common.custom} static constructor for creating simple
* custom chain {@link Common} objects (more complete custom chain setups
* can be created via the main constructor and the {@link CommonOpts.customChains} parameter).
*/
class Common extends events_1.EventEmitter {
/**
* @constructor
*/
constructor(opts) {
var _a, _b;
super();
this._supportedHardforks = [];
this._eips = [];
this._customChains = (_a = opts.customChains) !== null && _a !== void 0 ? _a : [];
this._chainParams = this.setChain(opts.chain);
this.DEFAULT_HARDFORK = (_b = this._chainParams.defaultHardfork) !== null && _b !== void 0 ? _b : Hardfork.Istanbul;
this._hardfork = this.DEFAULT_HARDFORK;
if (opts.supportedHardforks) {
this._supportedHardforks = opts.supportedHardforks;
}
if (opts.hardfork) {
this.setHardfork(opts.hardfork);
}
if (opts.eips) {
this.setEIPs(opts.eips);
}
}
/**
* Creates a {@link Common} object for a custom chain, based on a standard one.
*
* It uses all the {@link Chain} parameters from the {@link baseChain} option except the ones overridden
* in a provided {@link chainParamsOrName} dictionary. Some usage example:
*
* ```javascript
* Common.custom({chainId: 123})
* ```
*
* There are also selected supported custom chains which can be initialized by using one of the
* {@link CustomChains} for {@link chainParamsOrName}, e.g.:
*
* ```javascript
* Common.custom(CustomChains.MaticMumbai)
* ```
*
* Note that these supported custom chains only provide some base parameters (usually the chain and
* network ID and a name) and can only be used for selected use cases (e.g. sending a tx with
* the `@ethereumjs/tx` library to a Layer-2 chain).
*
* @param chainParamsOrName Custom parameter dict (`name` will default to `custom-chain`) or string with name of a supported custom chain
* @param opts Custom chain options to set the {@link CustomCommonOpts.baseChain}, selected {@link CustomCommonOpts.hardfork} and others
*/
static custom(chainParamsOrName, opts = {}) {
var _a;
const baseChain = (_a = opts.baseChain) !== null && _a !== void 0 ? _a : 'mainnet';
const standardChainParams = Object.assign({}, Common._getChainParams(baseChain));
standardChainParams['name'] = 'custom-chain';
if (typeof chainParamsOrName !== 'string') {
return new Common(Object.assign({ chain: Object.assign(Object.assign({}, standardChainParams), chainParamsOrName) }, opts));
}
else {
if (chainParamsOrName === CustomChain.PolygonMainnet) {
return Common.custom({
name: CustomChain.PolygonMainnet,
chainId: 137,
networkId: 137,
});
}
if (chainParamsOrName === CustomChain.PolygonMumbai) {
return Common.custom({
name: CustomChain.PolygonMumbai,
chainId: 80001,
networkId: 80001,
});
}
if (chainParamsOrName === CustomChain.ArbitrumRinkebyTestnet) {
return Common.custom({
name: CustomChain.ArbitrumRinkebyTestnet,
chainId: 421611,
networkId: 421611,
});
}
if (chainParamsOrName === CustomChain.xDaiChain) {
return Common.custom({
name: CustomChain.xDaiChain,
chainId: 100,
networkId: 100,
});
}
throw new Error(`Custom chain ${chainParamsOrName} not supported`);
}
}
/**
* Creates a {@link Common} object for a custom chain, based on a standard one. It uses all the `Chain`
* params from {@link baseChain} except the ones overridden in {@link customChainParams}.
*
* @deprecated Use {@link Common.custom} instead
*
* @param baseChain The name (`mainnet`) or id (`1`) of a standard chain used to base the custom
* chain params on.
* @param customChainParams The custom parameters of the chain.
* @param hardfork String identifier ('byzantium') for hardfork (optional)
* @param supportedHardforks Limit parameter returns to the given hardforks (optional)
*/
static forCustomChain(baseChain, customChainParams, hardfork, supportedHardforks) {
const standardChainParams = Common._getChainParams(baseChain);
return new Common({
chain: Object.assign(Object.assign({}, standardChainParams), customChainParams),
hardfork: hardfork,
supportedHardforks: supportedHardforks,
});
}
/**
* Static method to determine if a {@link chainId} is supported as a standard chain
* @param chainId BN id (`1`) of a standard chain
* @returns boolean
*/
static isSupportedChainId(chainId) {
const initializedChains = chains_1._getInitializedChains();
return Boolean(initializedChains['names'][chainId.toString()]);
}
static _getChainParams(chain, customChains) {
const initializedChains = chains_1._getInitializedChains(customChains);
if (typeof chain === 'number' || ethereumjs_util_1.BN.isBN(chain)) {
chain = chain.toString();
if (initializedChains['names'][chain]) {
const name = initializedChains['names'][chain];
return initializedChains[name];
}
throw new Error(`Chain with ID ${chain} not supported`);
}
if (initializedChains[chain]) {
return initializedChains[chain];
}
throw new Error(`Chain with name ${chain} not supported`);
}
/**
* Sets the chain
* @param chain String ('mainnet') or Number (1) chain
* representation. Or, a Dictionary of chain parameters for a private network.
* @returns The dictionary with parameters set as chain
*/
setChain(chain) {
if (typeof chain === 'number' || typeof chain === 'string' || ethereumjs_util_1.BN.isBN(chain)) {
this._chainParams = Common._getChainParams(chain, this._customChains);
}
else if (typeof chain === 'object') {
if (this._customChains.length > 0) {
throw new Error('Chain must be a string, number, or BN when initialized with customChains passed in');
}
const required = ['networkId', 'genesis', 'hardforks', 'bootstrapNodes'];
for (const param of required) {
if (chain[param] === undefined) {
throw new Error(`Missing required chain parameter: ${param}`);
}
}
this._chainParams = chain;
}
else {
throw new Error('Wrong input format');
}
return this._chainParams;
}
/**
* Sets the hardfork to get params for
* @param hardfork String identifier (e.g. 'byzantium') or {@link Hardfork} enum
*/
setHardfork(hardfork) {
if (!this._isSupportedHardfork(hardfork)) {
throw new Error(`Hardfork ${hardfork} not set as supported in supportedHardforks`);
}
let existing = false;
for (const hfChanges of hardforks_1.hardforks) {
if (hfChanges[0] === hardfork) {
if (this._hardfork !== hardfork) {
this._hardfork = hardfork;
this.emit('hardforkChanged', hardfork);
}
existing = true;
}
}
if (!existing) {
throw new Error(`Hardfork with name ${hardfork} not supported`);
}
}
/**
* Returns the hardfork based on the block number provided
* @param blockNumber
* @returns The name of the HF
*/
getHardforkByBlockNumber(blockNumber) {
blockNumber = ethereumjs_util_1.toType(blockNumber, ethereumjs_util_1.TypeOutput.BN);
let hardfork = Hardfork.Chainstart;
for (const hf of this.hardforks()) {
// Skip comparison for not applied HFs
if (hf.block === null) {
continue;
}
if (blockNumber.gte(new ethereumjs_util_1.BN(hf.block))) {
hardfork = hf.name;
}
}
return hardfork;
}
/**
* Sets a new hardfork based on the block number provided
* @param blockNumber
* @returns The name of the HF set
*/
setHardforkByBlockNumber(blockNumber) {
blockNumber = ethereumjs_util_1.toType(blockNumber, ethereumjs_util_1.TypeOutput.BN);
const hardfork = this.getHardforkByBlockNumber(blockNumber);
this.setHardfork(hardfork);
return hardfork;
}
/**
* Internal helper function to choose between hardfork set and hardfork provided as param
* @param hardfork Hardfork given to function as a parameter
* @returns Hardfork chosen to be used
*/
_chooseHardfork(hardfork, onlySupported = true) {
if (!hardfork) {
hardfork = this._hardfork;
}
else if (onlySupported && !this._isSupportedHardfork(hardfork)) {
throw new Error(`Hardfork ${hardfork} not set as supported in supportedHardforks`);
}
return hardfork;
}
/**
* Internal helper function, returns the params for the given hardfork for the chain set
* @param hardfork Hardfork name
* @returns Dictionary with hardfork params
*/
_getHardfork(hardfork) {
const hfs = this.hardforks();
for (const hf of hfs) {
if (hf['name'] === hardfork)
return hf;
}
throw new Error(`Hardfork ${hardfork} not defined for chain ${this.chainName()}`);
}
/**
* Internal helper function to check if a hardfork is set to be supported by the library
* @param hardfork Hardfork name
* @returns True if hardfork is supported
*/
_isSupportedHardfork(hardfork) {
if (this._supportedHardforks.length > 0) {
for (const supportedHf of this._supportedHardforks) {
if (hardfork === supportedHf)
return true;
}
}
else {
return true;
}
return false;
}
/**
* Sets the active EIPs
* @param eips
*/
setEIPs(eips = []) {
for (const eip of eips) {
if (!(eip in eips_1.EIPs)) {
throw new Error(`${eip} not supported`);
}
const minHF = this.gteHardfork(eips_1.EIPs[eip]['minimumHardfork']);
if (!minHF) {
throw new Error(`${eip} cannot be activated on hardfork ${this.hardfork()}, minimumHardfork: ${minHF}`);
}
if (eips_1.EIPs[eip].requiredEIPs) {
// eslint-disable-next-line prettier/prettier
eips_1.EIPs[eip].requiredEIPs.forEach((elem) => {
if (!(eips.includes(elem) || this.isActivatedEIP(elem))) {
throw new Error(`${eip} requires EIP ${elem}, but is not included in the EIP list`);
}
});
}
}
this._eips = eips;
}
/**
* Returns a parameter for the current chain setup
*
* If the parameter is present in an EIP, the EIP always takes precendence.
* Otherwise the parameter if taken from the latest applied HF with
* a change on the respective parameter.
*
* @param topic Parameter topic ('gasConfig', 'gasPrices', 'vm', 'pow')
* @param name Parameter name (e.g. 'minGasLimit' for 'gasConfig' topic)
* @returns The value requested or `null` if not found
*/
param(topic, name) {
// TODO: consider the case that different active EIPs
// can change the same parameter
let value = null;
for (const eip of this._eips) {
value = this.paramByEIP(topic, name, eip);
if (value !== null) {
return value;
}
}
return this.paramByHardfork(topic, name, this._hardfork);
}
/**
* Returns the parameter corresponding to a hardfork
* @param topic Parameter topic ('gasConfig', 'gasPrices', 'vm', 'pow')
* @param name Parameter name (e.g. 'minGasLimit' for 'gasConfig' topic)
* @param hardfork Hardfork name
* @returns The value requested or `null` if not found
*/
paramByHardfork(topic, name, hardfork) {
hardfork = this._chooseHardfork(hardfork);
let value = null;
for (const hfChanges of hardforks_1.hardforks) {
// EIP-referencing HF file (e.g. berlin.json)
if (hfChanges[1].hasOwnProperty('eips')) { // eslint-disable-line
const hfEIPs = hfChanges[1]['eips'];
for (const eip of hfEIPs) {
const valueEIP = this.paramByEIP(topic, name, eip);
value = valueEIP !== null ? valueEIP : value;
}
// Paramater-inlining HF file (e.g. istanbul.json)
}
else {
if (!hfChanges[1][topic]) {
throw new Error(`Topic ${topic} not defined`);
}
if (hfChanges[1][topic][name] !== undefined) {
value = hfChanges[1][topic][name].v;
}
}
if (hfChanges[0] === hardfork)
break;
}
return value;
}
/**
* Returns a parameter corresponding to an EIP
* @param topic Parameter topic ('gasConfig', 'gasPrices', 'vm', 'pow')
* @param name Parameter name (e.g. 'minGasLimit' for 'gasConfig' topic)
* @param eip Number of the EIP
* @returns The value requested or `null` if not found
*/
paramByEIP(topic, name, eip) {
if (!(eip in eips_1.EIPs)) {
throw new Error(`${eip} not supported`);
}
const eipParams = eips_1.EIPs[eip];
if (!(topic in eipParams)) {
throw new Error(`Topic ${topic} not defined`);
}
if (eipParams[topic][name] === undefined) {
return null;
}
const value = eipParams[topic][name].v;
return value;
}
/**
* Returns a parameter for the hardfork active on block number
* @param topic Parameter topic
* @param name Parameter name
* @param blockNumber Block number
*/
paramByBlock(topic, name, blockNumber) {
const activeHfs = this.activeHardforks(blockNumber);
const hardfork = activeHfs[activeHfs.length - 1]['name'];
return this.paramByHardfork(topic, name, hardfork);
}
/**
* Checks if an EIP is activated by either being included in the EIPs
* manually passed in with the {@link CommonOpts.eips} or in a
* hardfork currently being active
*
* Note: this method only works for EIPs being supported
* by the {@link CommonOpts.eips} constructor option
* @param eip
*/
isActivatedEIP(eip) {
if (this.eips().includes(eip)) {
return true;
}
for (const hfChanges of hardforks_1.hardforks) {
const hf = hfChanges[1];
if (this.gteHardfork(hf['name']) && 'eips' in hf) {
if (hf['eips'].includes(eip)) {
return true;
}
}
}
return false;
}
/**
* Checks if set or provided hardfork is active on block number
* @param hardfork Hardfork name or null (for HF set)
* @param blockNumber
* @param opts Hardfork options (onlyActive unused)
* @returns True if HF is active on block number
*/
hardforkIsActiveOnBlock(hardfork, blockNumber, opts = {}) {
var _a;
blockNumber = ethereumjs_util_1.toType(blockNumber, ethereumjs_util_1.TypeOutput.BN);
const onlySupported = (_a = opts.onlySupported) !== null && _a !== void 0 ? _a : false;
hardfork = this._chooseHardfork(hardfork, onlySupported);
const hfBlock = this.hardforkBlockBN(hardfork);
if (hfBlock && blockNumber.gte(hfBlock)) {
return true;
}
return false;
}
/**
* Alias to hardforkIsActiveOnBlock when hardfork is set
* @param blockNumber
* @param opts Hardfork options (onlyActive unused)
* @returns True if HF is active on block number
*/
activeOnBlock(blockNumber, opts) {
return this.hardforkIsActiveOnBlock(null, blockNumber, opts);
}
/**
* Sequence based check if given or set HF1 is greater than or equal HF2
* @param hardfork1 Hardfork name or null (if set)
* @param hardfork2 Hardfork name
* @param opts Hardfork options
* @returns True if HF1 gte HF2
*/
hardforkGteHardfork(hardfork1, hardfork2, opts = {}) {
const onlyActive = opts.onlyActive === undefined ? false : opts.onlyActive;
hardfork1 = this._chooseHardfork(hardfork1, opts.onlySupported);
let hardforks;
if (onlyActive) {
hardforks = this.activeHardforks(null, opts);
}
else {
hardforks = this.hardforks();
}
let posHf1 = -1, posHf2 = -1;
let index = 0;
for (const hf of hardforks) {
if (hf['name'] === hardfork1)
posHf1 = index;
if (hf['name'] === hardfork2)
posHf2 = index;
index += 1;
}
return posHf1 >= posHf2 && posHf2 !== -1;
}
/**
* Alias to hardforkGteHardfork when hardfork is set
* @param hardfork Hardfork name
* @param opts Hardfork options
* @returns True if hardfork set is greater than hardfork provided
*/
gteHardfork(hardfork, opts) {
return this.hardforkGteHardfork(null, hardfork, opts);
}
/**
* Checks if given or set hardfork is active on the chain
* @param hardfork Hardfork name, optional if HF set
* @param opts Hardfork options (onlyActive unused)
* @returns True if hardfork is active on the chain
*/
hardforkIsActiveOnChain(hardfork, opts = {}) {
var _a;
const onlySupported = (_a = opts.onlySupported) !== null && _a !== void 0 ? _a : false;
hardfork = this._chooseHardfork(hardfork, onlySupported);
for (const hf of this.hardforks()) {
if (hf['name'] === hardfork && hf['block'] !== null)
return true;
}
return false;
}
/**
* Returns the active hardfork switches for the current chain
* @param blockNumber up to block if provided, otherwise for the whole chain
* @param opts Hardfork options (onlyActive unused)
* @return Array with hardfork arrays
*/
activeHardforks(blockNumber, opts = {}) {
const activeHardforks = [];
const hfs = this.hardforks();
for (const hf of hfs) {
if (hf['block'] === null)
continue;
if (blockNumber !== undefined && blockNumber !== null && blockNumber < hf['block'])
break;
if (opts.onlySupported && !this._isSupportedHardfork(hf['name']))
continue;
activeHardforks.push(hf);
}
return activeHardforks;
}
/**
* Returns the latest active hardfork name for chain or block or throws if unavailable
* @param blockNumber up to block if provided, otherwise for the whole chain
* @param opts Hardfork options (onlyActive unused)
* @return Hardfork name
*/
activeHardfork(blockNumber, opts = {}) {
const activeHardforks = this.activeHardforks(blockNumber, opts);
if (activeHardforks.length > 0) {
return activeHardforks[activeHardforks.length - 1]['name'];
}
else {
throw new Error(`No (supported) active hardfork found`);
}
}
/**
* Returns the hardfork change block for hardfork provided or set
* @param hardfork Hardfork name, optional if HF set
* @returns Block number or null if unscheduled
* @deprecated Please use {@link Common.hardforkBlockBN} for large number support
*/
hardforkBlock(hardfork) {
const block = this.hardforkBlockBN(hardfork);
return block ? ethereumjs_util_1.toType(block, ethereumjs_util_1.TypeOutput.Number) : null;
}
/**
* Returns the hardfork change block for hardfork provided or set
* @param hardfork Hardfork name, optional if HF set
* @returns Block number or null if unscheduled
*/
hardforkBlockBN(hardfork) {
hardfork = this._chooseHardfork(hardfork, false);
const block = this._getHardfork(hardfork)['block'];
if (block === undefined || block === null) {
return null;
}
return new ethereumjs_util_1.BN(block);
}
/**
* True if block number provided is the hardfork (given or set) change block
* @param blockNumber Number of the block to check
* @param hardfork Hardfork name, optional if HF set
* @returns True if blockNumber is HF block
*/
isHardforkBlock(blockNumber, hardfork) {
blockNumber = ethereumjs_util_1.toType(blockNumber, ethereumjs_util_1.TypeOutput.BN);
hardfork = this._chooseHardfork(hardfork, false);
const block = this.hardforkBlockBN(hardfork);
return block ? block.eq(blockNumber) : false;
}
/**
* Returns the change block for the next hardfork after the hardfork provided or set
* @param hardfork Hardfork name, optional if HF set
* @returns Block number or null if not available
* @deprecated Please use {@link Common.nextHardforkBlockBN} for large number support
*/
nextHardforkBlock(hardfork) {
const block = this.nextHardforkBlockBN(hardfork);
return block === null ? null : ethereumjs_util_1.toType(block, ethereumjs_util_1.TypeOutput.Number);
}
/**
* Returns the change block for the next hardfork after the hardfork provided or set
* @param hardfork Hardfork name, optional if HF set
* @returns Block number or null if not available
*/
nextHardforkBlockBN(hardfork) {
hardfork = this._chooseHardfork(hardfork, false);
const hfBlock = this.hardforkBlockBN(hardfork);
if (hfBlock === null) {
return null;
}
// Next fork block number or null if none available
// Logic: if accumulator is still null and on the first occurence of
// a block greater than the current hfBlock set the accumulator,
// pass on the accumulator as the final result from this time on
const nextHfBlock = this.hardforks().reduce((acc, hf) => {
const block = new ethereumjs_util_1.BN(hf.block);
return block.gt(hfBlock) && acc === null ? block : acc;
}, null);
return nextHfBlock;
}
/**
* True if block number provided is the hardfork change block following the hardfork given or set
* @param blockNumber Number of the block to check
* @param hardfork Hardfork name, optional if HF set
* @returns True if blockNumber is HF block
*/
isNextHardforkBlock(blockNumber, hardfork) {
blockNumber = ethereumjs_util_1.toType(blockNumber, ethereumjs_util_1.TypeOutput.BN);
hardfork = this._chooseHardfork(hardfork, false);
const nextHardforkBlock = this.nextHardforkBlockBN(hardfork);
return nextHardforkBlock === null ? false : nextHardforkBlock.eq(blockNumber);
}
/**
* Internal helper function to calculate a fork hash
* @param hardfork Hardfork name
* @returns Fork hash as hex string
*/
_calcForkHash(hardfork) {
const genesis = Buffer.from(this.genesis().hash.substr(2), 'hex');
let hfBuffer = Buffer.alloc(0);
let prevBlock = 0;
for (const hf of this.hardforks()) {
const block = hf.block;
// Skip for chainstart (0), not applied HFs (null) and
// when already applied on same block number HFs
if (block !== 0 && block !== null && block !== prevBlock) {
const hfBlockBuffer = Buffer.from(block.toString(16).padStart(16, '0'), 'hex');
hfBuffer = Buffer.concat([hfBuffer, hfBlockBuffer]);
}
if (hf.name === hardfork)
break;
prevBlock = block;
}
const inputBuffer = Buffer.concat([genesis, hfBuffer]);
// CRC32 delivers result as signed (negative) 32-bit integer,
// convert to hex string
const forkhash = ethereumjs_util_1.intToBuffer(crc_32_1.buf(inputBuffer) >>> 0).toString('hex');
return `0x${forkhash}`;
}
/**
* Returns an eth/64 compliant fork hash (EIP-2124)
* @param hardfork Hardfork name, optional if HF set
*/
forkHash(hardfork) {
hardfork = this._chooseHardfork(hardfork, false);
const data = this._getHardfork(hardfork);
if (data['block'] === null) {
const msg = 'No fork hash calculation possible for non-applied or future hardfork';
throw new Error(msg);
}
if (data['forkHash'] !== undefined) {
return data['forkHash'];
}
return this._calcForkHash(hardfork);
}
/**
*
* @param forkHash Fork hash as a hex string
* @returns Array with hardfork data (name, block, forkHash)
*/
hardforkForForkHash(forkHash) {
const resArray = this.hardforks().filter((hf) => {
return hf.forkHash === forkHash;
});
return resArray.length >= 1 ? resArray[resArray.length - 1] : null;
}
/**
* Returns the Genesis parameters of current chain
* @returns Genesis dictionary
*/
genesis() {
return this._chainParams['genesis'];
}
/**
* Returns the hardforks for current chain
* @returns {Array} Array with arrays of hardforks
*/
hardforks() {
return this._chainParams['hardforks'];
}
/**
* Returns the hardfork set
* @returns Hardfork name
*/
hardfork() {
return this._hardfork;
}
/**
* Returns the Id of current chain
* @returns chain Id
* @deprecated Please use {@link Common.chainIdBN} for large number support
*/
chainId() {
return ethereumjs_util_1.toType(this.chainIdBN(), ethereumjs_util_1.TypeOutput.Number);
}
/**
* Returns the Id of current chain
* @returns chain Id
*/
chainIdBN() {
return new ethereumjs_util_1.BN(this._chainParams['chainId']);
}
/**
* Returns the name of current chain
* @returns chain name (lower case)
*/
chainName() {
return this._chainParams['name'];
}
/**
* Returns the Id of current network
* @returns network Id
* @deprecated Please use {@link Common.networkIdBN} for large number support
*/
networkId() {
return ethereumjs_util_1.toType(this.networkIdBN(), ethereumjs_util_1.TypeOutput.Number);
}
/**
* Returns the Id of current network
* @returns network Id
*/
networkIdBN() {
return new ethereumjs_util_1.BN(this._chainParams['networkId']);
}
/**
* Returns the active EIPs
* @returns List of EIPs
*/
eips() {
return this._eips;
}
/**
* Returns the consensus type of the network
* Possible values: "pow"|"poa"
*/
consensusType() {
return this._chainParams['consensus']['type'];
}
/**
* Returns the concrete consensus implementation
* algorithm or protocol for the network
* e.g. "ethash" for "pow" consensus type or
* "clique" for "poa" consensus type
*/
consensusAlgorithm() {
return this._chainParams['consensus']['algorithm'];
}
/**
* Returns a dictionary with consensus configuration
* parameters based on the consensus algorithm
*
* Expected returns (parameters must be present in
* the respective chain json files):
*
* ethash: -
* clique: period, epoch
* aura: -
*/
consensusConfig() {
return this._chainParams['consensus'][this.consensusAlgorithm()];
}
/**
* Returns a deep copy of this {@link Common} instance.
*/
copy() {
return Object.assign(Object.create(Object.getPrototypeOf(this)), this);
}
}
exports.default = Common;
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