Set all Object keys to false

Question

Lets say I have an object

  filter: {
    \"ID\": false,
    \"Name\": true,
    \"Role\": false,
    \"Sector\": true,
    \"Code\": false
  }

Answer 1

With ES6 features one-liner without mutation:

{
  ...Object.keys(filter).reduce((reduced, key) => ({ ...reduced, [key]: false }), {})
}