Is it possible to generate types when calling an "init" function?

[toxic meteor]

I've made a super-small sandbox to demonstrate what I'd like to do:

https://www.typescriptlang.org/play?#code/PQKhAIBkEsCMCcCG8CeAocEMQCoAsBTcAAwGVoAvA48AFxQAciATApgO2YGdwB7duoXABhflwCuAWwLxwAN2TREsADZFiXSgS7Fs4ABK8A7uADGiAUZYFTvcQzXhotAPzZg4NAQAeDXvFo6RiJyKnAAXnAAawIUXgAzIKYE8E0qLgBuNFt2LkDodmclFS0YBGQUCPAACl4GWi4ALnALFABKCIA+cABvNABIYA8AOlG3AF80NFAIUVypGT09AElwIwtA2l5wBkQuHkQzfnjoAHM6bdohEvLUABpBAgE8RDkiRFNTbR4tx6P4eA2TbBLjuTw5PKpLQ8SJ9fqwM7NHrgUCjYYgDzjO4DLiSRAqFRIlEgNEY8CTSYFIr40pwJCoappbRtLIQwJM5qhIiRADkCNOPIyQA

I'm a little lost as to how to approach this, I want to split out a library but have types created based on some initialiser function.

I've looked at experimentalDecorators, but am in over my head. I'd be grateful of any pointers here!

[daring hawk]

@toxic meteor Here's a shortened URL of your playground link! You can remove the full link from your message.

oodavid#0

Playground Link

Preview:```ts
/** Library
*

• The Size type depends on the Consumer
• How can we decouple it?
  */
  export type Size = keyof typeof sizes;
  const initializeLibrary = (opts: any) => {
  // ...?
  }

/** Consumer
*

• I want to pass a config to the library, then have access to the correct types
  ...```

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[pearl mountain]

sounds like you might want generics?

!hb generics

[daring hawk]

Handbook

Generics

[toxic meteor]

I'll take a look and see if I can get that to work!

[toxic meteor]

!solved