How to ignore array items that dont match schema instead of failing?

[itsramiel]

Hi,

I have an array that contains lots of items of different schemas. I care only about a small subset of the schemas. So for example the following array:

const input = [
  { id: 1, name: "John", age: 20 },
  { id: 2, name: "Jane", age: 30 },
  45,
  "hello",
  { id: 3, name: "Doe", age: 40 },
];

I am only interested in the objects so I created the following schema:

const Schema = v.array(
  v.object({
    id: v.number(),
    name: v.string(),
    age: v.number(),
  }),
);

But this fails with the following output:

{
  typed: false,
  success: false,
  output: [
    { id: 1, name: 'John', age: 20 },
    { id: 2, name: 'Jane', age: 30 },
    45,
    'hello',
    { id: 3, name: 'Doe', age: 40 }
  ],
  issues: [
    {
      kind: 'schema',
      type: 'object',
      input: 45,
      expected: 'Object',
      received: '45',
      message: 'Invalid type: Expected Object but received 45',
      requirement: undefined,
      path: [Array],
      issues: undefined,
      lang: undefined,
      abortEarly: undefined,
      abortPipeEarly: undefined
    },
    {
      kind: 'schema',
      type: 'object',
      input: 'hello',
      expected: 'Object',
      received: '"hello"',
      message: 'Invalid type: Expected Object but received "hello"',
      requirement: undefined,
      path: [Array],
      issues: undefined,
      lang: undefined,
      abortEarly: undefined,
      abortPipeEarly: undefined
    }
  ]
}

How can I make this work by ignoring the other values?

[fabian-hiller]

Hey 👋 this is related to #493.

[itsramiel]

Do you see the possibility of adding this to core as mentioned in that discussion?

[itsramiel]

I guess for my specific use case I can map through the array and parse each item. Not sure if I really need it.

Does the function fit into the mental model of the library?

[fabian-hiller]

I am not sure if I want to add it to the core, but I can well imagine adding a sub package with more special schemas and actions. Right now our v1 release has the highest priority.