largestFirst doesn't return utxos

[uouo690]

Hello ,
I am trying to mint an asset as described in this repo , but I debugged the code and founded that the selectedUtxos is empty as indicated in the attached image

Despite the fact the utxos has at least one utxo

The code I am using to mint as follow:

`
const recipientAddtess = req.body.recipientAddress;
const utxos = req.body.utxos;

const koiosProvider = new KoiosProvider('preprod');

const appWallet = new AppWallet({
    networkId: 0,
    fetcher: koiosProvider,
    submitter: koiosProvider,
    key: {
      type: 'mnemonic',
      words:[
      ....
      ],
    },
});

const appWalletAddress = appWallet.getPaymentAddress();
const forginScript = ForgeScript.withOneSignature(appWalletAddress);

const assetName = 'PointsAsset'
 // define asset#1 metadata
const assetMetadata1: AssetMetadata = {
    "name": "Mesh Token",
    "image": "ipfs://QmRzicpReutwCkM6aotuKjErFCUD213DpwPq6ByuzMJaua",
    "mediaType": "image/jpg",
    "description": "This NFT is minted during points initial creation."
};

const asset1: Mint = {
    assetName: assetName,
    assetQuantity: '1',
    metadata: assetMetadata1,
    label: '721',
    recipient: recipientAddtess,
};


const costLovelace =  "10000000";
const selectedUtxos = largestFirst(costLovelace, utxos, true);

const tx = new Transaction({ initiator: appWallet });
tx.setTxInputs(selectedUtxos);
tx.mintAsset(forginScript, asset1);
tx.sendLovelace(bankWalletAddress, costLovelace);
tx.setChangeAddress(recipientAddtess);


const _unsignedTx = await tx.build();
const unsignedTx = await appWallet.signTx(_unsignedTx,true);

return res.status(200).json({ unsignedTx : unsignedTx});

}`

This code always break at the tx.buil(); giving this error

Error: [Transaction] An error occurred during build: Insufficient input in transaction. shortage: {ada in inputs: 0, ada in outputs: 11168010, fee 182749
NOTE! "ada in inputs" must be >= ("ada in outputs" + fee) before adding change
and "ada in inputs" must be == ("ada in outputs" + fee) after adding change

Can u guid me what is the issue .
thanks

[jinglescode]

Hi, your code looks fine, and for this simple case of selecting 10 ADA it should work.
This is my suggestion, use keepRelevant().

Replace:

const selectedUtxos = largestFirst(costLovelace, utxos, true);

With:

import { keepRelevant } from '@meshsdk/core';
import type { Unit, Quantity } from '@meshsdk/core';

const assetMap = new Map<Unit, Quantity>();
assetMap.set('lovelace', costLovelace);

const selectedUtxos = keepRelevant(assetMap, utxos);

[uouo690]

Thanks , I can mint now :)
But I have another question , when tried miniting using smart contract , I faced this error

[jinglescode]

@uouo690 , check out my explanation here MeshJS/mesh#72 (comment)

for app wallet, do tx.setCollateral(utxo).