How to use the @ethersproject/properties.shallowCopy function in @ethersproject/properties
To help you get started, we’ve selected a few @ethersproject/properties examples, based on popular ways it is used in public projects.
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ethers-io / ethers.js / packages / providers / lib.esm / json-rpc-provider.js View on Github 
sendUncheckedTransaction(transaction) {
transaction = shallowCopy(transaction);
let fromAddress = this.getAddress().then((address) => {
if (address) {
address = address.toLowerCase();
}
return address;
});
// The JSON-RPC for eth_sendTransaction uses 90000 gas; if the user
// wishes to use this, it is easy to specify explicitly, otherwise
// we look it up for them.
if (transaction.gasLimit == null) {
let estimate = shallowCopy(transaction);
estimate.from = fromAddress;
transaction.gasLimit = this.provider.estimateGas(estimate);
}
return Promise.all([
resolveProperties(transaction),
fromAddress
]).then((results) => {
let tx = results[0];
let hexTx = this.provider.constructor.hexlifyTransaction(tx);
hexTx.from = results[1];
return this.provider.send("eth_sendTransaction", [hexTx]).then((hash) => {
return hash;
}, (error) => {
if (error.responseText) {
// See: JsonRpcProvider.sendTransaction (@TODO: Expose a ._throwError??)
if (error.responseText.indexOf("insufficient funds") >= 0) {JsonRpcProvider.hexlifyTransaction = function (transaction, allowExtra) {
// Check only allowed properties are given
var allowed = properties_1.shallowCopy(allowedTransactionKeys);
if (allowExtra) {
for (var key in allowExtra) {
if (allowExtra[key]) {
allowed[key] = true;
}
}
}
properties_1.checkProperties(transaction, allowed);
var result = {};
// Some nodes (INFURA ropsten; INFURA mainnet is fine) do not like leading zeros.
["gasLimit", "gasPrice", "nonce", "value"].forEach(function (key) {
if (transaction[key] == null) {
return;
}
var value = bytes_1.hexValue(transaction[key]);
if (key === "gasLimit") {getDeployTransaction(...args) {
let tx = {};
// If we have 1 additional argument, we allow transaction overrides
if (args.length === this.interface.deploy.inputs.length + 1) {
tx = shallowCopy(args.pop());
for (let key in tx) {
if (!allowedTransactionKeys[key]) {
throw new Error("unknown transaction override " + key);
}
}
}
// Do not allow these to be overridden in a deployment transaction
["data", "from", "to"].forEach((key) => {
if (tx[key] == null) {
return;
}
logger.throwError("cannot override " + key, Logger.errors.UNSUPPORTED_OPERATION, { operation: key });
});
// Make sure the call matches the constructor signature
logger.checkArgumentCount(args.length, this.interface.deploy.inputs.length, " in Contract constructor");
// Set the data to the bytecode + the encoded constructor argumentsstatic hexlifyTransaction(transaction, allowExtra) {
// Check only allowed properties are given
const allowed = shallowCopy(allowedTransactionKeys);
if (allowExtra) {
for (let key in allowExtra) {
if (allowExtra[key]) {
allowed[key] = true;
}
}
}
checkProperties(transaction, allowed);
const result = {};
// Some nodes (INFURA ropsten; INFURA mainnet is fine) do not like leading zeros.
["gasLimit", "gasPrice", "nonce", "value"].forEach(function (key) {
if (transaction[key] == null) {
return;
}
const value = hexValue(transaction[key]);
if (key === "gasLimit") {ContractFactory.prototype.getDeployTransaction = function () {
var args = [];
for (var _i = 0; _i < arguments.length; _i++) {
args[_i] = arguments[_i];
}
var tx = {};
// If we have 1 additional argument, we allow transaction overrides
if (args.length === this.interface.deploy.inputs.length + 1) {
tx = properties_1.shallowCopy(args.pop());
for (var key in tx) {
if (!allowedTransactionKeys[key]) {
throw new Error("unknown transaction override " + key);
}
}
}
// Do not allow these to be overridden in a deployment transaction
["data", "from", "to"].forEach(function (key) {
if (tx[key] == null) {
return;
}
logger.throwError("cannot override " + key, logger_1.Logger.errors.UNSUPPORTED_OPERATION, { operation: key });
});
// Make sure the call matches the constructor signature
logger.checkArgumentCount(args.length, this.interface.deploy.inputs.length, " in Contract constructor");
// Set the data to the bytecode + the encoded constructor argumentsexport function poll(func, options) {
if (!options) {
options = {};
}
options = shallowCopy(options);
if (options.floor == null) {
options.floor = 0;
}
if (options.ceiling == null) {
options.ceiling = 10000;
}
if (options.interval == null) {
options.interval = 250;
}
return new Promise(function (resolve, reject) {
let timer = null;
let done = false;
// Returns true if cancel was successful. Unsuccessful cancel means we're already done.
const cancel = () => {
if (done) {
return false;Contract.prototype.fallback = function (overrides) {
var _this = this;
if (!this.signer) {
logger.throwError("sending a transactions require a signer", logger_1.Logger.errors.UNSUPPORTED_OPERATION, { operation: "sendTransaction(fallback)" });
}
var tx = properties_1.shallowCopy(overrides || {});
["from", "to"].forEach(function (key) {
if (tx[key] == null) {
return;
}
logger.throwError("cannot override " + key, logger_1.Logger.errors.UNSUPPORTED_OPERATION, { operation: key });
});
tx.to = this.addressPromise;
return this.deployed().then(function () {
return _this.signer.sendTransaction(tx);
});
};
// Reconnect to a different signer or providerContract.prototype.queryFilter = function (event, fromBlockOrBlockhash, toBlock) {
var _this = this;
var runningEvent = this._getRunningEvent(event);
var filter = properties_1.shallowCopy(runningEvent.filter);
if (typeof (fromBlockOrBlockhash) === "string" && bytes_1.isHexString(fromBlockOrBlockhash, 32)) {
if (toBlock != null) {
logger.throwArgumentError("cannot specify toBlock with blockhash", "toBlock", toBlock);
}
filter.blockhash = fromBlockOrBlockhash;
}
else {
filter.fromBlock = ((fromBlockOrBlockhash != null) ? fromBlockOrBlockhash : 0);
filter.toBlock = ((toBlock != null) ? toBlock : "latest");
}
return this.provider.getLogs(filter).then(function (logs) {
return logs.map(function (log) { return _this._wrapEvent(runningEvent, log, null); });
});
};
Contract.prototype.on = function (event, listener) {status: Formatter.allowNull(number)
};
formats.block = {
hash: hash,
parentHash: hash,
number: number,
timestamp: number,
nonce: Formatter.allowNull(hex),
difficulty: this.difficulty.bind(this),
gasLimit: bigNumber,
gasUsed: bigNumber,
miner: address,
extraData: data,
transactions: Formatter.allowNull(Formatter.arrayOf(hash)),
};
formats.blockWithTransactions = properties_1.shallowCopy(formats.block);
formats.blockWithTransactions.transactions = Formatter.allowNull(Formatter.arrayOf(this.transactionResponse.bind(this)));
formats.filter = {
fromBlock: Formatter.allowNull(blockTag, undefined),
toBlock: Formatter.allowNull(blockTag, undefined),
blockHash: Formatter.allowNull(hash, undefined),
address: Formatter.allowNull(address, undefined),
topics: Formatter.allowNull(this.topics.bind(this), undefined),
};
formats.filterLog = {
blockNumber: Formatter.allowNull(number),
blockHash: Formatter.allowNull(hash),
transactionIndex: number,
removed: Formatter.allowNull(this.boolean.bind(this)),
address: address,
data: Formatter.allowFalsish(data, "0x"),
topics: Formatter.arrayOf(hash),@ethersproject/properties
Properties utility functions for ethers.
