How to use the exclude option in ES5 or ES6

[BIPLAVGHOSAL]

the -exclude-keys -x is working fine from CLI, but not able to use in ES5 or ES6, can someone please suggest?

CLI Usage:

a.json

{ 
    "foo": "bar"
}

b.json

{ 
    "foo": "baz"
}

works fine: json-diff -x foo a.json b.json

in ES5 :

const { diff } = require('json-diff');
const a = diff({ foo: 'bar' }, { foo: 'baz' }, {PLEAE SUGGEST WHAT TO PASS}) //no variables available , I guess

[ewoudenberg]

@BIPLAVGHOSAL it's

const a = diff({ foo: 'bar' }, { foo: 'baz' }, {excludeKeys: ['foo']}) 

[BIPLAVGHOSAL]

Thanks a lot @ewoudenberg