35 lines
854 B
TypeScript
35 lines
854 B
TypeScript
const cache = {}
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export function lazyLoad<T>(id:string):T{
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if(cache[id])return cache[id]
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let mdl = null
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let setModule = () => {
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if(!mdl)mdl = require("./modules/"+id)
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}
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const handlers:ProxyHandler<{}> = {
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get(target, prop){
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setModule()
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return mdl[prop]
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},
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set(target, prop, value){
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setModule()
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mdl[prop] = value
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return true
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},
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apply(target, thisArg, args){
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setModule()
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mdl.apply(this, args)
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},
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construct(target, args){
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setModule()
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const prototype = Object.create(mdl.prototype)
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handlers.apply(target, prototype, args)
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return prototype
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}
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}
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let proxy = new Proxy({}, handlers)
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return cache[id] = proxy as T
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} |