isset

Determine if paths are properties of given object and have values. This method differs from has(), in that it only returns true if properties' values are not undefined and not null.

See also misc. isset().

import { isset } from "@aedart/support/objects";

const target = {
    a: 1234,
    b: {
        name: undefined,
        c: {
            age: null
        }
    },
};

console.log(isset(target, 'a')); // true
console.log(isset(target, 'b')); // true
console.log(isset(target, 'b.name')); // false
console.log(isset(target, 'b.c')); // true
console.log(isset(target, 'b.c.age')); // false

You can also check if multiple paths are set.

console.log(isset(target, 'a', 'b')); // true
console.log(isset(target, 'b.c', 'b.name')); // false
console.log(isset(target, 'a', 'b.name', 'b.c.age')); // false