Theo's Typesafe Cult•2y ago

Whats going on with these type errors? (Challenge, TSPlayground Included)

No mater how hard I try I can't seem to fix these Typescript errors. Tbh I'm not much of a typescript wizard and I've mostly been guessing at the types, any pointers in the right direction would be greatly appreciated. I seem to fix one error and three more pop up 🤦‍♂️ Playground (Test-cases & example included): https://tsplay.dev/Wzxn2N The aim of the function is to turn an array of objects with a sibling relationship to one with a parent-child relationship. The example input & output in the TSPlayground should make it clearer. Currently the function works, its just the types are strange.

// This
[
  {
    keyA: objA,
    keyB: objB
  },
  {
    keyA: objA,
    keyB: objC
  },
  {
    keyA: objA,
    keyB: objD
  },
]
// To
[
  {
    ...objA,
    allKeyBs: [objB, objC, objD]
  }
]

// This
[
  {
    keyA: objA,
    keyB: objB
  },
  {
    keyA: objA,
    keyB: objC
  },
  {
    keyA: objA,
    keyB: objD
  },
]
// To
[
  {
    ...objA,
    allKeyBs: [objB, objC, objD]
  }
]

TS Playground - An online editor for exploring TypeScript and JavaS...

The Playground lets you write TypeScript or JavaScript online in a safe and sharable way.

6 Replies

whatplan•2y ago

im taking a look rn

whatplan•2y ago

https://tsplay.dev/wQ01ZW

TS Playground - An online editor for exploring TypeScript and JavaS...

The Playground lets you write TypeScript or JavaScript online in a safe and sharable way.

whatplan•2y ago

got to a solution im decently happy with hopefully it makes sense to you made it much better

whatplan•2y ago

https://tsplay.dev/w2971W

TS Playground - An online editor for exploring TypeScript and JavaS...

The Playground lets you write TypeScript or JavaScript online in a safe and sharable way.

whatplan•2y ago

its beautiful im actually quite proud that was pretty fun

IceAge2OnDVDOP•2y ago

Wow that is a nice solution its a fun challenge shame that i don't even really need this bc I just discovered that my database ORM can do this me 🤦‍♂️ cool learning expereince for me though

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Whats going on with these type errors? (Challenge, TSPlayground Included)