How to use the @ethersproject/bytes.splitSignature function in @ethersproject/bytes

}
        raw.push(hexlify(value));
    });
    if (transaction.chainId != null && transaction.chainId !== 0) {
        raw.push(hexlify(transaction.chainId));
        raw.push("0x");
        raw.push("0x");
    }
    const unsignedTransaction = RLP.encode(raw);
    // Requesting an unsigned transation
    if (!signature) {
        return unsignedTransaction;
    }
    // The splitSignature will ensure the transaction has a recoveryParam in the
    // case that the signTransaction function only adds a v.
    const sig = splitSignature(signature);
    // We pushed a chainId and null r, s on for hashing only; remove those
    let v = 27 + sig.recoveryParam;
    if (raw.length === 9) {
        raw.pop();
        raw.pop();
        raw.pop();
        v += transaction.chainId * 2 + 8;
    }
    raw.push(hexlify(v));
    raw.push(stripZeros(arrayify(sig.r)));
    raw.push(stripZeros(arrayify(sig.s)));
    return RLP.encode(raw);
}
export function parse(rawTransaction) {

}
        raw.push(bytes_1.hexlify(value));
    });
    if (transaction.chainId != null && transaction.chainId !== 0) {
        raw.push(bytes_1.hexlify(transaction.chainId));
        raw.push("0x");
        raw.push("0x");
    }
    var unsignedTransaction = RLP.encode(raw);
    // Requesting an unsigned transation
    if (!signature) {
        return unsignedTransaction;
    }
    // The splitSignature will ensure the transaction has a recoveryParam in the
    // case that the signTransaction function only adds a v.
    var sig = bytes_1.splitSignature(signature);
    // We pushed a chainId and null r, s on for hashing only; remove those
    var v = 27 + sig.recoveryParam;
    if (raw.length === 9) {
        raw.pop();
        raw.pop();
        raw.pop();
        v += transaction.chainId * 2 + 8;
    }
    raw.push(bytes_1.hexlify(v));
    raw.push(bytes_1.stripZeros(bytes_1.arrayify(sig.r)));
    raw.push(bytes_1.stripZeros(bytes_1.arrayify(sig.s)));
    return RLP.encode(raw);
}
exports.serialize = serialize;

export function recoverPublicKey(digest: BytesLike, signature: SignatureLike): string {
    const sig = splitSignature(signature);
    const rs = { r: arrayify(sig.r), s: arrayify(sig.s) };
    return "0x" + getCurve().recoverPubKey(arrayify(digest), rs, sig.recoveryParam).encode("hex", false);
}

signDigest(digest) {
        const keyPair = getCurve().keyFromPrivate(arrayify(this.privateKey));
        const signature = keyPair.sign(arrayify(digest), { canonical: true });
        return splitSignature({
            recoveryParam: signature.recoveryParam,
            r: hexZeroPad("0x" + signature.r.toString(16), 32),
            s: hexZeroPad("0x" + signature.s.toString(16), 32),
        });
    }
    computeSharedSecret(otherKey) {

signDigest(digest: BytesLike): Signature {
        const keyPair = getCurve().keyFromPrivate(arrayify(this.privateKey));
        const signature = keyPair.sign(arrayify(digest), { canonical: true });
        return splitSignature({
            recoveryParam: signature.recoveryParam,
            r: hexZeroPad("0x" + signature.r.toString(16), 32),
            s: hexZeroPad("0x" + signature.s.toString(16), 32),
        })
    }

export function recoverPublicKey(digest, signature) {
    const sig = splitSignature(signature);
    const rs = { r: arrayify(sig.r), s: arrayify(sig.s) };
    return "0x" + getCurve().recoverPubKey(arrayify(digest), rs, sig.recoveryParam).encode("hex", false);
}
export function computePublicKey(key, compressed) {

function recoverPublicKey(digest, signature) {
    var sig = bytes_1.splitSignature(signature);
    var rs = { r: bytes_1.arrayify(sig.r), s: bytes_1.arrayify(sig.s) };
    return "0x" + getCurve().recoverPubKey(bytes_1.arrayify(digest), rs, sig.recoveryParam).encode("hex", false);
}
exports.recoverPublicKey = recoverPublicKey;