@btc-vision/transaction/build/signer/SignerUtils.js

OPNet transaction library allows you to create and sign transactions for the OPNet network.

import { isP2TR, pubkeyPositionInScript } from '@btc-vision/bitcoin';
export function isTaprootInput(input) {
    return (input &&
        !!(input.tapInternalKey ||
            input.tapMerkleRoot ||
            (input.tapLeafScript && input.tapLeafScript.length) ||
            (input.tapBip32Derivation && input.tapBip32Derivation.length) ||
            (input.witnessUtxo && isP2TR(input.witnessUtxo.script))));
}
export function getInputRelevantScript(input) {
    if (input.redeemScript) {
        return input.redeemScript;
    }
    if (input.witnessScript) {
        return input.witnessScript;
    }
    if (input.witnessUtxo) {
        return input.witnessUtxo.script;
    }
    if (input.nonWitnessUtxo) {
    }
    return null;
}
export function canSignNonTaprootInput(input, publicKey) {
    if ((input.nonWitnessUtxo &&
        !input.redeemScript &&
        !input.witnessScript &&
        !input.witnessUtxo) ||
        input.redeemScript) {
        return true;
    }
    const script = getInputRelevantScript(input);
    if (script) {
        return pubkeyInScript(publicKey, script);
    }
    return false;
}
export function pubkeyInScript(pubkey, script) {
    return pubkeyPositionInScript(pubkey, script) !== -1;
}