Wrapper around `type()`

In my configuration loader that I'm building, I have a "registry" pattern where I want to have developers declare the type schema of the config they expect, and then they need to register the config in order to get it loaded, looks something like this:

const GoodConfig = registerConfig(
      'GoodConfig',
      type({
        server: {
          base_url: 'url',
        },
        customer_support_email: 'email',
        widget_counter_increment: 'parse.integer',
        'some_optional_thing?': 'uuid',
      })
    );

const GoodConfig = registerConfig(
      'GoodConfig',
      type({
        server: {
          base_url: 'url',
        },
        customer_support_email: 'email',
        widget_counter_increment: 'parse.integer',
        'some_optional_thing?': 'uuid',
      })
    );

But I don't love having

registerConfig()

registerConfig()

wrapped around

type()

type()

, instead I would love to just have the second parameter to the register function be passed through from

type()

type()

so that I could call

type()

type()

internally, i.e.

function registerConfig(name:string, typeDef: Parameters<typeof type>[0]){
    const configType = type(typeDef)
    //...etc

function registerConfig(name:string, typeDef: Parameters<typeof type>[0]){
    const configType = type(typeDef)
    //...etc

This is ideal as it avoids the need to import both my config library and arktype, as well as just being simpler for the consumer of my library.

The problem I'm having is that
Parameters<typeof type>[0]
Parameters<typeof type>[0]
is not resolving correctly. Is there a better way to get to that type?

arktype•2y ago•

87 replies

SneakyTurtle

Wrapper around `type()`

const GoodConfig = registerConfig(
      'GoodConfig',
      type({
        server: {
          base_url: 'url',
        },
        customer_support_email: 'email',
        widget_counter_increment: 'parse.integer',
        'some_optional_thing?': 'uuid',
      })
    );

const GoodConfig = registerConfig(
      'GoodConfig',
      type({
        server: {
          base_url: 'url',
        },
        customer_support_email: 'email',
        widget_counter_increment: 'parse.integer',
        'some_optional_thing?': 'uuid',
      })
    );

But I don't love having

registerConfig()

registerConfig()

wrapped around

type()

type()

, instead I would love to just have the second parameter to the register function be passed through from

type()

type()

so that I could call

type()

type()

internally, i.e.

function registerConfig(name:string, typeDef: Parameters<typeof type>[0]){
    const configType = type(typeDef)
    //...etc

function registerConfig(name:string, typeDef: Parameters<typeof type>[0]){
    const configType = type(typeDef)
    //...etc

Wrapper around `type()`

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