TTC
Theo's Typesafe Cult•3y ago
Wezter

Conditionally required types

Someone that has any ideas on how I can make everything required if accepted is true, if it's false then the other 3 fields are not required. 
type GeoLocation = {
  accepted: boolean;
  accuracy?: number;
  longitude?: number;
  latitude?: number;
};
type GeoLocation = {
  accepted: boolean;
  accuracy?: number;
  longitude?: number;
  latitude?: number;
};
3 Replies
batata
batata•3y ago
this logic seems off
Brendonovich
Brendonovich•3y ago
How's this? 
type GeoLocation = {
  accepted: true;
  accuracy: number;
  longitude: number;
  latitude: number;
} | {
  accepted: false;
  accuracy?: number;
  longitude?: number;
  latitude?: number;
}
type GeoLocation = {
  accepted: true;
  accuracy: number;
  longitude: number;
  latitude: number;
} | {
  accepted: false;
  accuracy?: number;
  longitude?: number;
  latitude?: number;
}
Could also move accuracy, longitude and latitude into a separate type and Partial it for the accepted: false case
barry
barry•3y ago
I would rather overload here than this but yeh

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