arktype•2mo ago

Creating array from another object

I'm new at arktype, just been trying to do UserSchema[]. I haven't seen anything on the docs, so how am I supposed to do arrays with types? What I have right now:

export const EventSchema = type({
  title: "string",
  description: "string | null",
  participants: `{UserSchema}[]`, // Thought this would work because of the pattern of the library
  happens_at: "Date",
  created_by: UserSchema,
});

export const EventSchema = type({
  title: "string",
  description: "string | null",
  participants: `{UserSchema}[]`, // Thought this would work because of the pattern of the library
  happens_at: "Date",
  created_by: UserSchema,
});

6 Replies

SunOP•2mo ago

I actually moved to this

export const EventSchema = type({
  title: type.string,
  description: type.string.or(type.null),
  participants: `{UserSchema}[]`, // Thought this would work because of the pattern of the library
  happens_at: type.Date,
  created_by: UserSchema,
});

export const EventSchema = type({
  title: type.string,
  description: type.string.or(type.null),
  participants: `{UserSchema}[]`, // Thought this would work because of the pattern of the library
  happens_at: type.Date,
  created_by: UserSchema,
});

Sorry, I didn't like the magic string that will eventually turn to this anyways

Apteryx•2mo ago

participants: UserSchema.array()

SunOP•2mo ago

thx! do people normally do it with the string notation instead of this?

Apteryx•2mo ago

i only started using arktype yesterday so idk 😆 but im liking the string notation, it matches typescript type syntax, is incredibly well typed, compat, and its vscode extension is a big plus

ssalbdivad•2mo ago

there's not really a way to embed type-safe objects in strings like this. maybe if TS eventually supports improved types for tagged template literals. if you don't like the string syntax anyways then yeah just use chaining here for sure. strings for cases like string | null are more canonical for the reasons @Apteryx mentions but there are multiple options for a reason

SunOP•2mo ago

I'm not using vscode, but even if it's highlighted it'd be... weird? dunno how to say it I understand it though

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Creating array from another object

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