Add '--bail' option when running '--build' mode

Search Terms

project references, bail, cascade, errors

Suggestion

When building multiple Typescript projects using the --build flag, and the projects had dependencies on each other, an error in an upstream project can cause a cascade of errors from downstream projects that obscure the original error.

A possible solution would be a --bail option (or however you'd like to name it). When provided in --build mode, it would prevent all projects downstream from a project with an error from building. While this may hide downstream errors that are only found when re-running, it will prevent "false-positive" errors from being shown.

Use Cases

Using --build mode on a large web of project references, without the possibility of being flooded with spurious errors due to one upstream typo.

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.

Commencez par le traitement de la ligne de commande TypeScript pour --build et suivez la manière dont les références de projet sont compilées dans l’ordre des dépendances. Reproduisez la cascade avec plusieurs projets référencés et une erreur dans un projet en amont, puis déterminez comment une option --bail devrait arrêter les compilations en aval. Le travail est terminé lorsque l’option fonctionne en mode --build sans modifier le comportement existant lorsqu’elle est absente.