@unbrowse/cross-fetch-shim

One-line drop-in for cross-fetch. $0 on cache hits, identical semantics on miss.

- import fetch from 'cross-fetch';
+ import fetch from '@unbrowse/cross-fetch-shim';

  const res = await fetch('https://api.site.com/items');
  const json = await res.json();

cross-fetch is a universal fetch ponyfill. This shim keeps that exact surface — default fetch plus named fetch, Headers, Request, Response — but routes a safe GET through Unbrowse's marketplace cache first (free synthesized Response on a hit) and falls straight through to the platform's native fetch on a miss, so behaviour is identical.

Install

npm i @unbrowse/cross-fetch-shim

No API key required. Set UNBROWSE_API_KEY / UNBROWSE_X_PAYMENT to route paid endpoints; set UNBROWSE_CROSS_FETCH_PASSTHROUGH=1 to disable cache routing.

Attribution

This shim mirrors the public surface of cross-fetch (MIT). On a cache miss it is exactly the ponyfilled fetch — the shim only lowers cost on hits.