TTC
Theo's Typesafe Cult•12mo ago
dopeinc

Infer type of object values in array

Can someone help me get this straight I want to infer all possible types of Value from T and get an array of object type with all possible options https://www.typescriptlang.org/play?#code/JYWwDg9gTgLgBAJQKYEMDG8BmUIjgIilQ3wChSYBPMJOAQSihUoHlMAFHG2SgHgBUAfHDgBeOAG9SI4ABMAXHADOMKMAB2Ac2lwqNRQHIANhDQoYwCOoNwAPnAMrzAVyU37B10ihu7DzMBGSPzUSAY60LLeiurOIABG3joAbihGzkiK-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-wsoIoykLwEHgFYSAwex9RESS5SkRSBFWZxpLtORcBiaQbaiiIAB6AD8QA
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3 Replies
dopeinc
dopeinc•12mo ago
Question is in comment at the bottom
whatplan
whatplan•12mo ago
type TestArray = typeof managedProperties;
type InferTypeOfKeyValue = TestArray[number]['value'];
type TestArray = typeof managedProperties;
type InferTypeOfKeyValue = TestArray[number]['value'];
is this what your looking for?
dopeinc
dopeinc•12mo ago
Yeah I went this way but it was more complicated ended up doing this , its safe but unsafe but works 🙂 : 
type ManagedProperty<T> = {
  id: string
  type: 'location' | 'status' | 'users' | 'fileType'
  order: number
  value: T
  onSubmit?: (data: LocationData) => void
}

interface Props<T extends readonly ManagedProperty<unknown>[]> {
  managedProperties: T
}
type ManagedProperty<T> = {
  id: string
  type: 'location' | 'status' | 'users' | 'fileType'
  order: number
  value: T
  onSubmit?: (data: LocationData) => void
}

interface Props<T extends readonly ManagedProperty<unknown>[]> {
  managedProperties: T
}
the former didn't understand that my array of managedProperties could have multple values of different type it would always match the first one I have some playground if ever you want them
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