2020-03-28 06:17:28 +08:00
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export default function magicMethods(clazz: any) {
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2020-03-11 17:23:28 +08:00
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const classHandler = Object.create(null)
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classHandler.construct = (target: any, args: any) => {
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const instance = new clazz(...args)
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const instanceHandler = Object.create(null)
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const get = Object.getOwnPropertyDescriptor(clazz.prototype, '__get')
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if (get) {
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instanceHandler.get = (target: any, name: any) => {
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if (typeof name !== 'string') {
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return
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}
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2020-03-30 19:09:08 +08:00
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const exists = name in target
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|| name.startsWith('_')
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|| ['then', 'catch'].includes(name)
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2020-03-11 17:23:28 +08:00
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if (exists) {
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return target[name]
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} else {
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return get.value.call(target, name)
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}
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}
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}
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instance.proxy = new Proxy(instance, instanceHandler)
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return instance.proxy
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}
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return new Proxy(clazz, classHandler)
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}
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