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"use strict";
/* eslint-disable @typescript-eslint/no-extraneous-class */
Object.defineProperty(exports, "__esModule", { value: true });
exports.LazyProxyFactory = void 0;
// LazyProxyFactory creates a Proxy which lazily loads its target once needed
class LazyProxyFactory {
static makeProxy(name, lazyProvider) {
const target = new ProxyTarget(lazyProvider);
const handler = {
get: (_, property, __) => {
// Create the lazy dependency if needed
if (target.createRealObjectIfNeeded(name) === undefined) {
// The dependency unexpectedly couldn't be created, so we have nothing to proxy to
return undefined;
}
// Get the property, which could be a function
const res = target.realObject[property];
// If it's a function, bind it to the real object
if (typeof res == "function") {
return res.bind(target.realObject);
}
return res;
},
set: (_, property, value) => {
if (target.createRealObjectIfNeeded(name) === undefined) {
return false;
}
return Reflect.set(target.realObject, property, value, target.realObject);
},
has: (_, property) => {
if (target.createRealObjectIfNeeded(name) === undefined) {
return false;
}
return Reflect.has(target.realObject, property);
},
deleteProperty: (_, property) => {
if (target.createRealObjectIfNeeded(name) === undefined) {
return false;
}
return Reflect.deleteProperty(target.realObject, property);
},
ownKeys: (_) => {
if (target.createRealObjectIfNeeded(name) === undefined) {
return [];
}
return Reflect.ownKeys(target.realObject);
},
getOwnPropertyDescriptor: (_, property) => {
if (target.createRealObjectIfNeeded(name) === undefined) {
return undefined;
}
return Reflect.getOwnPropertyDescriptor(target.realObject, property);
},
defineProperty: (_, property, descriptor) => {
if (target.createRealObjectIfNeeded(name) === undefined) {
return false;
}
return Reflect.defineProperty(target.realObject, property, descriptor);
},
preventExtensions: (_) => {
if (target.createRealObjectIfNeeded(name) === undefined) {
return false;
}
/* We need to prevent extensions on the actual proxy target
otherwise the Proxy throws a TypeError */
Reflect.preventExtensions(target);
return Reflect.preventExtensions(target.realObject);
},
isExtensible: (_) => {
if (target.createRealObjectIfNeeded(name) === undefined) {
return false;
}
return Reflect.isExtensible(target.realObject);
},
getPrototypeOf: (_) => {
if (target.createRealObjectIfNeeded(name) === undefined) {
return null;
}
return Reflect.getPrototypeOf(target.realObject);
},
setPrototypeOf: (_, prototype) => {
if (target.createRealObjectIfNeeded(name) === undefined) {
return false;
}
return Reflect.setPrototypeOf(target.realObject, prototype);
},
};
const res = new Proxy(target, handler);
return res;
}
}
exports.LazyProxyFactory = LazyProxyFactory;
/* The proxy target begins by holding nothing,
and eventually holds the real proxy target once needed */
class ProxyTarget {
constructor(lazyProvider) {
this.lazyProvider = lazyProvider;
}
createRealObjectIfNeeded(name) {
if (this.realObject === undefined) {
this.realObject = this.lazyProvider.lazyDependencyFor(name);
}
return this.realObject;
}
}
//# sourceMappingURL=jet-proxy.js.map
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