@helia/verified-fetch/dist/src/utils/parse-resource.js

A fetch-like API for obtaining verified & trustless IPFS content on the web

import { CID } from 'multiformats/cid';
import { parseUrlString } from './parse-url-string.js';
/**
 * Handles the different use cases for the `resource` argument.
 * The resource can represent an IPFS path, IPNS path, or CID.
 * If the resource represents an IPNS path, we need to resolve it to a CID.
 */
export async function parseResource(resource, { ipns, logger }, { withServerTiming = false, ...options } = { withServerTiming: false }) {
    if (typeof resource === 'string') {
        return parseUrlString({ urlString: resource, ipns, logger, withServerTiming }, options);
    }
    const cid = CID.asCID(resource);
    if (cid != null) {
        // an actual CID
        return {
            cid,
            protocol: 'ipfs',
            path: '',
            query: {},
            ipfsPath: `/ipfs/${cid.toString()}`,
            ttl: 29030400, // 1 year for ipfs content
            serverTimings: []
        };
    }
    throw new TypeError(`Invalid resource. Cannot determine CID from resource: ${resource}`);
}
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