wretch
Version:
A tiny wrapper built around fetch with an intuitive syntax.
3 lines (2 loc) • 526 B
JavaScript
const e=(e,t)=>t.skipDedupe||"GET"!==t.method,t=(e,t)=>t.method+"@"+e,r=e=>e.clone();exports.dedupe=({skip:o=e,key:n=t,resolver:s=r}={})=>{const c=new Map;return e=>(t,r)=>{if(o(t,r))return e(t,r);const h=n(t,r);if(c.has(h))return new Promise(((e,t)=>{c.get(h).push([e,t])}));c.set(h,[]);try{return e(t,r).then((e=>(c.get(h).forEach((([t])=>t(s(e)))),c.delete(h),e))).catch((e=>{throw c.get(h).forEach((([t,r])=>r(e))),c.delete(h),e}))}catch(e){return c.delete(h),Promise.reject(e)}}};
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