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Showing content from https://developer.cdn.mozilla.net/en-US/docs/Web/JavaScript/Reference/Global_Objects/Reflect/get below:

Reflect.get() - JavaScript | MDN

Baseline Widely available

The Reflect.get() static method is like the property accessor syntax, but as a function.

const object1 = {
  x: 1,
  y: 2,
};

console.log(Reflect.get(object1, "x"));
// Expected output: 1

const array1 = ["zero", "one"];

console.log(Reflect.get(array1, 1));
// Expected output: "one"

Reflect.get(target, propertyKey)
Reflect.get(target, propertyKey, receiver)

target

The target object on which to get the property.

propertyKey

The name of the property to get.

receiver Optional

The value of this provided for the call to target if a getter is encountered.

The value of the property.

TypeError

Thrown if target is not an object.

Reflect.get() provides the reflective semantic of a property access. That is, Reflect.get(target, propertyKey, receiver) is semantically equivalent to:

Note that in a normal property access, target and receiver would observably be the same object.

Reflect.get() invokes the [[Get]] object internal method of target.

// Object
const obj1 = { x: 1, y: 2 };
Reflect.get(obj1, "x"); // 1

// Array
Reflect.get(["zero", "one"], 1); // "one"

// Proxy with a get handler
const obj2 = new Proxy(
  { p: 1 },
  {
    get(t, k, r) {
      return `${k}bar`;
    },
  },
);
Reflect.get(obj2, "foo"); // "foobar"

// Proxy with get handler and receiver
const obj3 = new Proxy(
  { p: 1, foo: 2 },
  {
    get(t, prop, receiver) {
      return `${receiver[prop]}bar`;
    },
  },
);
Reflect.get(obj3, "foo", { foo: 3 }); // "3bar"

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