Type Alias toType<S>

toType: [keyof S] extends [never]
    ? unknown
    : S extends { anyOf: infer T extends readonly any[] }
        ? T[number] extends infer R ? R extends R ? toType<R> : never : never
        : S extends { allOf: infer T }
            ? Intersect<T>
            : S extends { type: "null" }
                ? null
                : S extends { type: "boolean" }
                    ? boolean
                    : S extends { type: "integer" }
                        ? number
                        : S extends { type: "number" }
                            ? number
                            : S extends { type: "string" }
                                ? string
                                : S extends { const: any }
                                    ? S["const"]
                                    : S extends { enum: ... }
                                        ? (...)[(...)]
                                        : (...) extends (...) ? (...) : (...)

import { JsonSchema } from '@traversable/json-schema'

const MyJsonSchema = { type: 'boolean' }

console.log(JsonSchema.toType(MyJsonSchema))
// => "boolean"

// If you'd like to give the generated type a name, use the `typeName` option:

console.log(JsonSchema.toType(MyJsonSchema, { typeName: 'MyType' }))
// => "type MyType = boolean"
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