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Gaurav
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I'm trying to estimate gas fees of a contract that I'm about to execute. My code is as follows.

import Web3 from "web3";
const web3 = new Web3();

const estimateGasLimit = async (
  fromAddress: string,
  outputAddress: string,
  amount: number,
  gasPrice: number,
  gasLimit: number,
  chain = 1,
  contractAddress: string
) => {
  const contract = new web3.eth.Contract(minABI, contractAddress, {
    from: fromAddress,
  });

  return await contract.methods.transfer(outputAddress, amount).estimateGas();
};

I'm testing for USDT right now, whose contract address is '0xdac17f958d2ee523a2206206994597c13d831ec7'. It works perfectly for amount 1000000, which is 1 USDT as the decimal for USDT is 6, but fails for 10000000 that is 10 USDT. I get the following error

UnhandledPromiseRejectionWarning: Error: Returned error: invalid opcode: opcode 0xfe not defined
    at Object.ErrorResponse (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/web3-core-helpers/lib/errors.js:28:19)
    at /home/gaurav/Work/Revamped-Everything/wallet/node_modules/web3-core-requestmanager/lib/index.js:288:36
    at XMLHttpRequest.request.onreadystatechange (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/web3-providers-http/lib/index.js:98:13)
    at XMLHttpRequestEventTarget.dispatchEvent (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request-event-target.js:34:22)
    at XMLHttpRequest._setReadyState (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request.js:208:14)
    at XMLHttpRequest._onHttpResponseEnd (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request.js:318:14)
    at IncomingMessage.<anonymous> (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request.js:289:61)
    at IncomingMessage.emit (events.js:327:22)
    at IncomingMessage.EventEmitter.emit (domain.js:506:15)
    at endReadableNT (_stream_readable.js:1220:12)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)

I am very new at ethereum and blockchain, so I would appreciate any help that I could get. Thank you.

  • List item

I'm trying to estimate gas fees of a contract that I'm about to execute. My code is as follows.

import Web3 from "web3";
const web3 = new Web3();

const estimateGasLimit = async (
  fromAddress: string,
  outputAddress: string,
  amount: number,
  gasPrice: number,
  gasLimit: number,
  chain = 1,
  contractAddress: string
) => {
  const contract = new web3.eth.Contract(minABI, contractAddress, {
    from: fromAddress,
  });

  return await contract.methods.transfer(outputAddress, amount).estimateGas();
};

I'm testing for USDT right now, whose contract address is '0xdac17f958d2ee523a2206206994597c13d831ec7'. It works perfectly for amount 1000000, which is 1 USDT as the decimal for USDT is 6, but fails for 10000000 that is 10 USDT. I get the following error

UnhandledPromiseRejectionWarning: Error: Returned error: invalid opcode: opcode 0xfe not defined
    at Object.ErrorResponse (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/web3-core-helpers/lib/errors.js:28:19)
    at /home/gaurav/Work/Revamped-Everything/wallet/node_modules/web3-core-requestmanager/lib/index.js:288:36
    at XMLHttpRequest.request.onreadystatechange (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/web3-providers-http/lib/index.js:98:13)
    at XMLHttpRequestEventTarget.dispatchEvent (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request-event-target.js:34:22)
    at XMLHttpRequest._setReadyState (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request.js:208:14)
    at XMLHttpRequest._onHttpResponseEnd (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request.js:318:14)
    at IncomingMessage.<anonymous> (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request.js:289:61)
    at IncomingMessage.emit (events.js:327:22)
    at IncomingMessage.EventEmitter.emit (domain.js:506:15)
    at endReadableNT (_stream_readable.js:1220:12)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)

I am very new at ethereum and blockchain, so I would appreciate any help that I could get. Thank you.

  • List item

I'm trying to estimate gas fees of a contract that I'm about to execute. My code is as follows.

import Web3 from "web3";
const web3 = new Web3();

const estimateGasLimit = async (
  fromAddress: string,
  outputAddress: string,
  amount: number,
  gasPrice: number,
  gasLimit: number,
  chain = 1,
  contractAddress: string
) => {
  const contract = new web3.eth.Contract(minABI, contractAddress, {
    from: fromAddress,
  });

  return await contract.methods.transfer(outputAddress, amount).estimateGas();
};

I'm testing for USDT right now, whose contract address is '0xdac17f958d2ee523a2206206994597c13d831ec7'. It works perfectly for amount 1000000, which is 1 USDT as the decimal for USDT is 6, but fails for 10000000 that is 10 USDT. I get the following error

UnhandledPromiseRejectionWarning: Error: Returned error: invalid opcode: opcode 0xfe not defined
    at Object.ErrorResponse (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/web3-core-helpers/lib/errors.js:28:19)
    at /home/gaurav/Work/Revamped-Everything/wallet/node_modules/web3-core-requestmanager/lib/index.js:288:36
    at XMLHttpRequest.request.onreadystatechange (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/web3-providers-http/lib/index.js:98:13)
    at XMLHttpRequestEventTarget.dispatchEvent (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request-event-target.js:34:22)
    at XMLHttpRequest._setReadyState (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request.js:208:14)
    at XMLHttpRequest._onHttpResponseEnd (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request.js:318:14)
    at IncomingMessage.<anonymous> (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request.js:289:61)
    at IncomingMessage.emit (events.js:327:22)
    at IncomingMessage.EventEmitter.emit (domain.js:506:15)
    at endReadableNT (_stream_readable.js:1220:12)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)

I am very new at ethereum and blockchain, so I would appreciate any help that I could get. Thank you.

Source Link
Gaurav
  • 43
  • 1
  • 1
  • 4

I'm getting "invalid opcode: opcode 0xfe not defined", when trying to estimate the gas fees

I'm trying to estimate gas fees of a contract that I'm about to execute. My code is as follows.

import Web3 from "web3";
const web3 = new Web3();

const estimateGasLimit = async (
  fromAddress: string,
  outputAddress: string,
  amount: number,
  gasPrice: number,
  gasLimit: number,
  chain = 1,
  contractAddress: string
) => {
  const contract = new web3.eth.Contract(minABI, contractAddress, {
    from: fromAddress,
  });

  return await contract.methods.transfer(outputAddress, amount).estimateGas();
};

I'm testing for USDT right now, whose contract address is '0xdac17f958d2ee523a2206206994597c13d831ec7'. It works perfectly for amount 1000000, which is 1 USDT as the decimal for USDT is 6, but fails for 10000000 that is 10 USDT. I get the following error

UnhandledPromiseRejectionWarning: Error: Returned error: invalid opcode: opcode 0xfe not defined
    at Object.ErrorResponse (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/web3-core-helpers/lib/errors.js:28:19)
    at /home/gaurav/Work/Revamped-Everything/wallet/node_modules/web3-core-requestmanager/lib/index.js:288:36
    at XMLHttpRequest.request.onreadystatechange (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/web3-providers-http/lib/index.js:98:13)
    at XMLHttpRequestEventTarget.dispatchEvent (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request-event-target.js:34:22)
    at XMLHttpRequest._setReadyState (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request.js:208:14)
    at XMLHttpRequest._onHttpResponseEnd (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request.js:318:14)
    at IncomingMessage.<anonymous> (/home/gaurav/Work/Revamped-Everything/wallet/node_modules/xhr2-cookies/dist/xml-http-request.js:289:61)
    at IncomingMessage.emit (events.js:327:22)
    at IncomingMessage.EventEmitter.emit (domain.js:506:15)
    at endReadableNT (_stream_readable.js:1220:12)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)

I am very new at ethereum and blockchain, so I would appreciate any help that I could get. Thank you.

  • List item