Omit Object Keys

Implement an omit function that creates a new object without the specified keys.

Requirements

• Return a new object with all keys except the ones listed
• Ignore keys that don't exist on the source object
• Do not mutate the original object

Example

omit({ a: 1, b: 2, c: 3 }, ['b']);    // { a: 1, c: 3 }
omit({ x: 10, y: 20, z: 30 }, ['y', 'z']); // { x: 10 }