accounts/dist/server/internal/tokenlist.js

Tempo Accounts SDK

import { cached } from './kv.js';
/** Default cache TTL in seconds (10 minutes) for tokenlist responses. */
const defaultCacheTtl = 10 * 60;
/** Default base URL for the verified tokenlist service. */
const defaultBaseUrl = 'https://tokenlist.tempo.xyz';
/**
 * Fetches the verified tokenlist for `chainId`. Reads through `kv` so
 * concurrent callers in the same scope share a single upstream request,
 * and so independent handlers (e.g. `Handler.relay` + `Handler.exchange`)
 * reuse the same KV cache key.
 *
 * Returns an empty list on any non-OK response — callers should fall back
 * to chain-supplied behavior rather than treating an empty list as fatal.
 *
 * @param chainId - Chain id to fetch the tokenlist for.
 * @param kv - Kv used to cache responses across requests.
 * @param options - Options.
 * @returns Tokens for the chain.
 */
export async function fetch(chainId, kv, options = {}) {
    const { baseUrl = defaultBaseUrl, cacheTtl = defaultCacheTtl, resolver } = options;
    return cached(kv, `tokenlist:${chainId}`, async () => (resolver ? resolver(chainId) : fetchUncached(chainId, baseUrl)), { ttl: cacheTtl });
}
/**
 * Default fetcher — resolves the verified tokenlist for `chainId` directly
 * from `tokenlist.tempo.xyz`. Returns an empty list on any non-OK response.
 */
async function fetchUncached(chainId, baseUrl) {
    const response = await globalThis.fetch(`${baseUrl}/list/${chainId}`);
    if (!response.ok)
        return [];
    const data = (await response.json());
    return data.tokens.map(({ logoURI, ...token }) => ({
        ...token,
        logoUri: token.logoUri ?? logoURI,
    }));
}
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