zonder/dist/lib/zonder/resolveStartBlock.js

Ergonomic multi-chain indexing framework with dual runtime support for Ponder and Envio.

export function resolveStartBlock(startBlocks, chainName, contractName) {
    // If no startBlocks config at all, default to 0
    if (!startBlocks) {
        return 0;
    }
    const chainStartBlocks = startBlocks[chainName];
    // If no config for this chain, default to 0
    if (!chainStartBlocks) {
        return 0;
    }
    // Per-contract start blocks with default fallback (default to 0 if not specified)
    return chainStartBlocks[contractName] ?? chainStartBlocks.default ?? 0;
}
/**
 * Resolves the chain-level start blocks, returning a safe object with defaults
 */
export function resolveChainStartBlocks(startBlocks, chainName) {
    if (!startBlocks || !startBlocks[chainName]) {
        return { default: 0 };
    }
    const chainStartBlocks = startBlocks[chainName];
    return {
        ...chainStartBlocks,
        default: chainStartBlocks.default ?? 0,
    };
}
/**
 * Gets the minimum start block for a chain across all contracts
 */
export function resolveMinStartBlock(startBlocks, chainName, addresses) {
    if (!startBlocks || !startBlocks[chainName] || !addresses) {
        return 0;
    }
    const chainStartBlocks = startBlocks[chainName];
    const defaultStartBlock = chainStartBlocks.default ?? 0;
    let minStartBlock = defaultStartBlock;
    // Check all contracts that have addresses on this chain
    for (const [contractName, address] of Object.entries(addresses)) {
        if (address) {
            const contractStartBlock = chainStartBlocks[contractName] ?? defaultStartBlock;
            if (contractStartBlock < minStartBlock) {
                minStartBlock = contractStartBlock;
            }
        }
    }
    return minStartBlock;
}