Deep Exclude Properties (Immutable)

deepExclude.js

'use strict';

const deepExclude = (node, exclude) => {
  if (Array.isArray(node)) {
    return node.map((n) => deepExclude(n, exclude));
  } else if (typeof node === 'object' && node) {
    return Object.entries(node)
      .filter(([key]) => exclude.indexOf(key) === -1)
      .reduce((obj, [key, value]) => ({ ...obj, [key]: deepExclude(value, exclude) }), {});
  }
  return node;
};

test.js

'use strict';

const o = {
  accounts: [{
    id: 1,
    password: 'abc'
  }, {
    id: 2,
    password: 'qwerty'
  }],
  users: {
    primary: {
      name: 'Joe',
      email: 'joe@imawesome.com'
    }
  }
};

console.log(JSON.stringify(deepExclude(o, ['password', 'email']), null, 2));
/*
{
  "accounts": [
    {
      "id": 1
    },
    {
      "id": 2
    }
  ],
  "users": {
    "primary": {
      "name": "Joe"
    }
  }
}
*/