@standard-crypto/farcaster-js-hub-rest/dist/esm/utils.js

A tool for interacting with the REST API of any Farcaster hub.

import { ViemLocalEip712Signer, NobleEd25519Signer } from '@farcaster/core';
import { privateKeyToAccount, mnemonicToAccount } from 'viem/accounts';
import { createPublicClient, http } from 'viem';
import { mainnet } from 'viem/chains';
export function hexToSigner(signerHex) {
    let privateKeyBytes;
    if (signerHex.startsWith('0x')) {
        privateKeyBytes = hexToBytes(signerHex.slice(2));
    }
    else {
        privateKeyBytes = hexToBytes(signerHex);
    }
    return new NobleEd25519Signer(privateKeyBytes);
}
export function eip712SignerFromMnemonicOrPrivateKey(mnemonicOrPrivateKey) {
    let account;
    if (mnemonicOrPrivateKey.startsWith('0x')) {
        account = privateKeyToAccount(mnemonicOrPrivateKey);
    }
    else if (mnemonicOrPrivateKey.split(' ').length === 1) {
        account = privateKeyToAccount(`0x${mnemonicOrPrivateKey}`);
    }
    else {
        account = mnemonicToAccount(mnemonicOrPrivateKey);
    }
    return new ViemLocalEip712Signer(account);
}
export function hexToBytes(hex) {
    if (typeof hex !== 'string') {
        throw new Error('hex string expected, got ' + typeof hex);
    }
    const len = hex.length;
    // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
    if (len % 2) {
        throw new Error(`padded hex string expected, got un-padded hex of length ${len}`);
    }
    const array = new Uint8Array(len / 2);
    for (let i = 0; i < array.length; i++) {
        const j = i * 2;
        const hexByte = hex.slice(j, j + 2);
        const byte = Number.parseInt(hexByte, 16);
        if (Number.isNaN(byte) || byte < 0) {
            throw new Error('Invalid byte sequence');
        }
        array[i] = byte;
    }
    return array;
}
export async function getLatestBlock() {
    const publicClient = createPublicClient({
        chain: mainnet,
        transport: http(),
    });
    const latestBlock = await publicClient.getBlock();
    return latestBlock.hash;
}
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