Published Oct 14, 2019
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Hooking into runtime-level object meta-operations.
let target = {
foo: "Welcome, foo"
}
let proxy = new Proxy(target, {
get (receiver, name) {
return name in receiver ? receiver[name] : `Hello, ${name}`
}
})
proxy.foo === "Welcome, foo"
proxy.world === "Hello, world"
Make calls corresponding to the object meta-operations.
let obj = { a: 1 }
Object.defineProperty(obj, "b", { value: 2 })
obj[Symbol("c")] = 3
Reflect.ownKeys(obj) // [ "a", "b", Symbol(c) ]
It is unlikely I will use this, so it is omitted.
References: