Sanity schema types

A type is a kind of a thing which is manageable in a Sanity instance.

Types are defined as part of your Sanity schema.

And your schema is part of an overall Sanity config.

Typically, you'll define a schemaTypes constant somewhere in a different module.

Then import that into your Sanity config.

// schemaTypes.ts
export const schemaTypes = [
  {
    title: "Example Document",
    name: "exampleDocument",
    type: "document",
    fields: [
      {
        title: "Greeting",
        name: "greeting",
        type: "string"
      }
    ]
  }  
]

// sanity.config.ts
import { defineConfig } from "sanity";
import { schemaTypes } from "./schemaTypes";

export default defineConfig({
  name: "default",
  title: "My Cool Website",
  /* ... */
  schema: {
    types: schemaTypes
  }
});

Yoinked from the Sanity documentation

This defines an "Example Document" type, with a single field for Greeting, which is a string.

Note that here, "string" is a type, "document" is a type, and "exampleDocument" is also a type.

Builtin types

There are lots of builtin types.

Like String, for basic strings, Boolean, Number, Image, Date, etc.

There are more complicated or generic types like Array or Block (which is rich WSIWYG text).

Custom types

See Sanity custom types.