Random unusable BigNumber objects

[chenzheio]

Ethers Version

5.7.2

Search Terms

No response

Describe the Problem

I use AbiCoder in utils to decode abi. Get the input object of the contract.
The BigNumber object in the input object obtained, when I use the toNumber or toString method, I will randomly get an error "value out of f range"

Code Snippet

import { utils } from 'ethers';


const coder = new utils.AbiCoder();
const inputs = coder.decode(typesInput, inputsBuf) 
console.log(inputs) //[ [Getter], BigNumber { _hex: '0x0104ece0', _isBigNumber: true } ]

Contract ABI

No response

Errors

Error: value out of range (argument="value", value=20, code=INVALID_ARGUMENT, version=bytes/5.7.0)
    at Logger.makeError (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/logger/src.ts/index.ts:269:28)
    at Logger.throwError (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/logger/src.ts/index.ts:281:20)
    at Logger.throwArgumentError (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/logger/src.ts/index.ts:285:21)
    at hexZeroPad (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/bytes/src.ts/index.ts:323:16)
    at AddressCoder.decode (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/abi/src.ts/coders/address.ts:28:37)
    at /Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/abi/src.ts/coders/array.ts:108:31
    at Array.forEach (<anonymous>)
    at unpack (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/abi/src.ts/coders/array.ts:89:12)
    at TupleCoder.decode (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/abi/src.ts/coders/tuple.ts:58:47)
    at AbiCoder.decode (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/abi/src.ts/abi-coder.ts:118:22) {
  reason: 'value out of range',
  code: 'INVALID_ARGUMENT',
  argument: 'value',
  value: 20,
  baseType: 'address',
  name: null,
  type: 'address'
}

Environment

node.js (v12 or newer)

Environment (Other)

No response

[chenzheio]

        this.commonService.trx
          .getTransaction(
            '7e880a8b94cfa69212cd2626c801aa7fb7e60baf7eb779395995ca4f11e277ea',
          )
          .then((res) => {
            this.getContractAbi('TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t').then(
              (abi) => {
                let data = '0x' + res.raw_data.contract[0].parameter.value.data;
                const {inputs} = this._extractInfoFromAbi(data, abi.entrys);
                console.log(inputs); //[ [Getter], BigNumber { _hex: '0x1dcd6500', _isBigNumber: true } ]
                console.log(parseInt(inputs[1].toHexString(),16));//500000000

                inputs.forEach((input) => {
                  if(input instanceof BigNumber){
                    console.log(parseInt(input.toHexString(),16));
                    /**
                     * /Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/logger/src.ts/index.ts:269
                        const error: any = new Error(message);
                                           ^
                        Error: value out of range (argument="value", value=20, code=INVALID_ARGUMENT, version=bytes/5.7.0)
                        at Logger.makeError (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/logger/src.ts/index.ts:269:28)
                        at Logger.throwError (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/logger/src.ts/index.ts:281:20)
                        at Logger.throwArgumentError (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/logger/src.ts/index.ts:285:21)
                        at hexZeroPad (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/bytes/src.ts/index.ts:323:16)
                        at AddressCoder.decode (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/abi/src.ts/coders/address.ts:28:37)
                        at /Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/abi/src.ts/coders/array.ts:108:31
                        at Array.forEach (<anonymous>)
                        at unpack (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/abi/src.ts/coders/array.ts:89:12)
                        at TupleCoder.decode (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/abi/src.ts/coders/tuple.ts:58:47)
                        at AbiCoder.decode (/Users/zhe/Documents/node/tron/backend/node_modules/@ethersproject/abi/src.ts/abi-coder.ts:118:22)
                     */
                  }
                });
              },
            );
          });

when I use inputs[1] to access this BigNumber object, it didn't throw an error.
but when I use forEach to filter this BigNumber object then access it. I'll get an error

[zemse]

const inputs = coder.decode(typesInput, inputsBuf) 

Can you provide the values for typesInput and inputsBuf? Looks like your first type is address and the value in that slot is larger than 160 bits.

[ricmoo]

An IEEE754 JavaScript number can only handle numbers up to 53-bits wide. So, it cannot be converted to a number if it exceeds that.

You will need to determine why you are trying to convert the value to a number, because you almost certainly want to retain those numbers as exact numbers regardless of your purpose... If you wish to perform maths on it, you should keep it as a BigNumber or BigInt and perform the safe math operations on it there. If you don't need to do maths, why do you need the number? :)