Type-safe substitutions

[manuel-plavsic]

I am wondering if it is possible to achieve type-safe substitutions with this library. I had a glimpse into its docs, but I cannot really tell if this functionality is supported.

My current strategy and its annoyances

So far I used a very simplistic approach: through JSON files. I created the class that handles the JSON files myself and everything works. However, it is not really type-safe: I would like the IDE to show an error when i did not enter all substitutions (or at least flutter to check this at compile time) . Maybe there is a i18n package that does that? Or would it be fine to accomplish this through Dart code as well?

Example of my translate function:

AppLocalizations.of(context)!.translate(String jsonKey, [
  Map<String, String>? substitutions,
]);

A concrete example:

AppLocalizations.of(context)!.translate('add_account');

That key/value pair in the JSON file:

"add_account": "Aggiungi account",

Another example, with substitutions this time:

AppLocalizations.of(context)!.translate('0_results_for', {'searchedText': 'Paolo'});

That key/value pair in the JSON file:

"0_results_for": "Zero risultati per '{{ searchedText }}'",

(which displays 'Zero risultati per Paolo').

However, had i only entered AppLocalizations.of(context)!.translate('0_results_for');, it would have compiled and run the app without all substitutions passed. This is the annoyance I would like to get rid of.

[manuel-plavsic]

I had a look again and it clearly does (String b = t.game.end.highscore(score: 32.6);).