Conditionals

Conditional elements in array and object.

This npm package is filtering out undefined and null values.

Use case:

The main use case it's when you want to send some payload to server and you want to remove all nullish values.

Usually it's done like this:

const payload = {};

if (name != null) {
  payload.name = name;
}

// more if's here

Or with es6 spread operator:

const payload = {
  ...(name != null && { name }),
  // more if's here
};

As you can see this is not perfect and either verbose or unreadable. This is what conditionals trying to fix.

const payload = conditionals({
  name,
  // more values here here
});

Example

import conditionals from 'conditionals';

const user = {
  name: 'John',
  surname: null,
  age: undefined,
  friends: [
    {
      name: 'Jimmy',
      surname: null,
    },
  ],
};

conditionals(user);

Will be

const sanitizedUser = {
  name: 'John',
  friends: [
    {
      name: 'Jimmy',
    },
  ],
};

In some cases null can be expected value. You can pass options.soft as a second parameter:

conditionals(user, { soft: true });

const sanitizedUser = {
  name: 'John',
  surname: null,
  friends: [
    {
      name: 'Jimmy',
      surname: null,
    },
  ],
};