Cardano.signTX error about nami HOT 6 CLOSED

Hey!
cardano.signTx takes a raw cbor string as argument. Did you create the tx with the cardano-cli?

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Yes! I built the transaction and then used the 'cborHex' argument

from nami.

For some reason the cli creates an empty witness set in form of an array, although in the ledger specs it's a map. You can make a small transformation from an array to a map with this function:

const cbor = require("cbor");

const convertCbor = (txRaw) => {
  const decoded = cbor.decode(txRaw);
  decoded.splice(1, 1, new Map());
  return Buffer.from(cbor.encode(decoded), "hex").toString("hex");
};

The result you can then use as argument for cardano.signTx
The cbor library you can get here: https://www.npmjs.com/package/cbor

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Ok almost there, I have been able to get a uint8 array, here the encoded form '84a30081825820745084b076a17275916921ad4cadbda2ef071587fe0b2cda80e14df5a2848a83000182825839011c471b31ea0b04c652bd8f76b239aea5f57139bdc5a2b28ab1e69175fd3a6bfce30d7744ac55e9cf9146d8a2a04ec7fb2ce2ee69862606531a000c917b825839010d50033b5cfc6177d1bf3fdfc958fc0112b4ec3ba12960df29cebfe39500d456024a38c1658ff57ba22f2f91612aad725ad26a1d2daf00f31a001e8480021a0002b0c5a080f6'

Unfortunately the error keeps being the same
const signedTx=await cardano.signTx(tx: uint8Array);

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You simply take the raw cbor string from the cli and pass it in the convertCbor function. The return value you then put in the cardano.signTx function. That's all you need to do.

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Thanks a lot @alessandrokonrad, as you told me the working code is:

const convertCbor = (txRaw) => {
  const decoded = cbor.decode(txRaw);
  decoded.splice(1, 1, new Map());
  return Buffer.from(cbor.encode(decoded), "hex").toString("hex");
}; 

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