wretch
Version:
A tiny wrapper built around fetch with an intuitive syntax.
3 lines (2 loc) • 1.42 kB
JavaScript
var global,factory;global=this,factory=function(e){const t=(e,t)=>t.skipCache||"GET"!==t.method,o=(e,t)=>t.method+"@"+e,n=(e,t)=>0,a=(e,t)=>null,r=e=>e.ok;e.throttlingCache=({throttle:e=1e3,skip:c=t,key:l=o,clear:i=n,invalidate:s=a,condition:f=r,flagResponseOnCacheHit:h="__cached"}={})=>{const d=new Map,g=new Map,p=new Set,u=t=>{e&&!p.has(t)&&(p.add(t),setTimeout((()=>{p.delete(t)}),e))},y=e=>(t,o)=>{const n=l(t,o);let a=s(t,o);if(a&&(a instanceof Array||(a=[a]),a.forEach((e=>{"string"==typeof e?d.delete(e):e instanceof RegExp&&d.forEach(((t,o)=>{e.test(o)&&d.delete(o)}))}))),i(t,o)&&d.clear(),c(t,o))return e(t,o);if(p.has(n)){if(d.has(n)){const e=d.get(n).clone();return h&&Object.defineProperty(e,h,{value:n,enumerable:0}),Promise.resolve(e)}if(g.has(n))return new Promise(((e,t)=>{g.get(n).push([e,t])}))}return g.has(n)||g.set(n,[]),u(n),e(t,o).then((e=>(f(e.clone())&&d.set(n,e.clone()),g.get(n).forEach((([t])=>t(e.clone()))),g.delete(n),e))).catch((e=>{throw g.get(n).forEach((([t,o])=>o(e))),g.delete(n),e}))};return y.cacheResponse=function(e,t){u(e),d.set(e,t)},y.cache=d,y.inflight=g,y.throttling=p,y}},"object"==typeof exports&&"undefined"!=typeof module?factory(exports):"function"==typeof define&&define.amd?define(["exports"],factory):factory((global="undefined"!=typeof globalThis?globalThis:global||self).wretchThrottlingCacheMiddleware={});
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