[0]装饰器代码，编译后不会在bundle.js里面（DecorateModelProxy）

import BaseProxy from "./BaseProxy"
export interface DecorateProxyConstructor {
    new (proxyName: string): BaseProxy
} 
const ModelProxyMap: { [key: string]: DecorateProxyConstructor } = {} 
export const ModelProxyKeys: Array<string> = new Array<string>() 
export function GetModelProxyConstructor(loaderName: string) {
    return ModelProxyMap[loaderName]
} 
export function RegistProxyConstructor(loaderName: string, func: DecorateProxyConstructor) {
    console.log("reg proxy", loaderName)
    if (ModelProxyKeys.indexOf(loaderName) == -1) {
        ModelProxyKeys.push(loaderName)
        ModelProxyMap[loaderName] = func
    } else {
        throw "repeat reg content loader"
    }
} 
export function DecorateModelProxy(loaderName: string) {
    return (func: DecorateProxyConstructor) => {
        RegistProxyConstructor(loaderName, func)
    }
}