@hyperlane-xyz/sdk/dist/metadata/chainIdUtils.js

The official SDK for the Hyperlane Network

import { isNullish } from '@hyperlane-xyz/utils';
// Decimal-only canonical chain IDs. Rejects hex, prefixed values, and mixed IDs
// like cosmoshub-4 so those never alias to numeric domain lookups.
const NUMERIC_CHAIN_ID_REGEX = /^\d+$/;
export function tryNormalizeNumericChainId(chainId) {
    if (typeof chainId === 'number') {
        return Number.isSafeInteger(chainId) ? chainId : null;
    }
    if (!NUMERIC_CHAIN_ID_REGEX.test(chainId))
        return null;
    const numericChainId = Number(chainId);
    if (!Number.isSafeInteger(numericChainId))
        return null;
    if (String(numericChainId) !== chainId)
        return null;
    return numericChainId;
}
export function areChainIdsEqual(left, right) {
    if (isNullish(left) || isNullish(right))
        return false;
    if (left === right)
        return true;
    const leftNumeric = tryNormalizeNumericChainId(left);
    const rightNumeric = tryNormalizeNumericChainId(right);
    return leftNumeric !== null && leftNumeric === rightNumeric;
}
export function getEffectiveDomainId(metadata) {
    if (!isNullish(metadata.domainId)) {
        return metadata.domainId;
    }
    return tryNormalizeNumericChainId(metadata.chainId);
}
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