[feature request] destructured type assignment

Search Terms

typescript destructuring types

Suggestion

We can currently do:

type Lane = import('../Lane').Lane

But it would be nifty to be able to do:

type {Lane} = import('../Lane')

And taking it further, grab more things at once:

type {Lane, LaneColor, LaneSize} = import('../Lane')

instead of having to write

type Lane = import('../Lane').Lane
type LaneColor = import('../Lane').LaneColor
type LaneSize = import('../Lane').LaneSize

Use Cases

convenience

Examples

see above

Checklist

My suggestion meets these guidelines:

• This wouldn't be a breaking change in existing TypeScript/JavaScript code
• This wouldn't change the runtime behavior of existing JavaScript code
• This could be implemented without emitting different JS based on the types of the expressions
• This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, etc.)
• This feature would agree with the rest of TypeScript's Design Goals.

Inizia esaminando la sintassi esistente per l’importazione dei tipi e gli esempi presenti in questa issue, quindi controlla la discussione sul design di TypeScript per verificare i vincoli relativi alle assegnazioni di tipi destrutturate. Il lavoro è completato quando sono supportati sia i nomi di tipo importati singoli sia quelli multipli, senza modificare l’output di runtime di JavaScript, con una copertura delle forme mostrate.