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| type Class<Instance extends any> = (new (...args: any[]) => Instance) & { [key: string]: any } | |
| function MySingleton() { | |
| return function decorator<Instance extends any>(constructor: Class<Instance>) { | |
| let instance: Instance | null = null | |
| let decoratedConstructor = function (...args: any[]) { | |
| if (!instance) { | |
| instance = new constructor(...args) | |
| } | |
| return instance | |
| } as Function as Class<Instance> | |
| decoratedConstructor.prototype = constructor.prototype | |
| return decoratedConstructor as Class<Instance> | |
| } | |
| } |
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