Don't suggest converting custom promise-like returning function to async ones

Search Terms

async converted function

Suggestion

Do not suggest that a function is converted to async if its return value is explicitly set to something that is not the global Promise type.

Use Cases

If using a package that provides an extended version of promises (for instance cancellable promises) then the transformation is wrong to occur.

Examples

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.

Aucun fichier, test ou point d’entrée n’est nommé. Commencez par localiser le diagnostic du compilateur ou l’action de code qui suggère de convertir les fonctions en async, puis déterminez comment la condition de type de retour demandée serait testée ; c’est terminé lorsque la suggestion est supprimée pour les types de retour Promise explicitement non globaux.