Realm Function error ethers.js and web3

Filippo_Murolo · October 22, 2022, 11:22am

Hi everyone, I’m trying to write a simple realm function where, using the ethers.js dependency, I get back the number of transactions in my ethereum wallet.

But I get an error when I try to use the function: toLowerCase() is not a function

Why? I leave you the code hoping to be able to solve …

exports = async function(arg){
  var ethers = require("ethers");
  
  const provider = 
new ethers.providers.JsonRpcProvider("https://goerli.infura.io/XXXXXXXXXXXXXXXXXXXX");
  const wallet = new ethers.Wallet("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", provider);
  
  const gasPrice = await provider.getGasPrice(); //THIS WORKS FINE
  console.log(gasPrice);
  
  const nonce = await wallet.getTransactionCount(); //THIS THROWS THE ERROR toLowerCase() is not a function
  console.log(nonce);
};

Pavel_Duchovny · October 24, 2022, 10:50am

Hi @Filippo_Murolo ,

How do you upload the Ethar.js module ? Do you use external dependencies?

It looks as the source code of the Ethar JS is Type Script based:

github.com

ethers-io/ethers.js/blob/master/packages/providers/src.ts/base-provider.ts#L1460


      
              try {
                  return BigNumber.from(result);
              } catch (error) {
                  return logger.throwError("bad result from backend", Logger.errors.SERVER_ERROR, {
                      method: "getBalance",
                      params, result, error
                  });
              }
          }
          
          
async getTransactionCount(addressOrName: string | Promise<string>, blockTag?: BlockTag | Promise<BlockTag>): Promise<number> {
              await this.getNetwork();
              const params = await resolveProperties({
                  address: this._getAddress(addressOrName),
                  blockTag: this._getBlockTag(blockTag)
              });
          
          
    const result = await this.perform("getTransactionCount", params);
              try {
                  return BigNumber.from(result).toNumber();
              } catch (error) {

I am not sure how it will all blend in a App Services dependency…

Have you searched the web if anyone did something like that?

PS. I think your best chance is to see what said on Ethersjs "toLowerCase is not a function" typeerror on MongoDB Realm Webhook · Issue #2238 · ethers-io/ethers.js · GitHub

Thanks
Pavel