What is the location for adjusting the angular strictness flags that determine the level of strictness for strictTemplates?

Currently in the process of transitioning our application to strictTemplates, we are encountering a multitude of errors, some more significant than others.

As a result, I decided to adjust the strictness of the angular type checker and came across these strictness flags outlined in the documentation.

https://angular.io/guide/template-typecheck#troubleshooting-template-errors

Here are a few examples provided in the documentation:

strictInputTypes: This flag determines whether the assignability of a binding expression to the @Input() field is checked, affecting the inference of directive generic types.

strictInputAccessModifiers: Determines whether access modifiers such as private/protected/readonly are considered when assigning a binding expression to an @Input(). If disabled, access modifiers of the @Input are ignored, with only the type being checked. By default, this option is false, even with strictTemplates set to true.

strictNullInputTypes: This flag determines whether strictNullChecks is applied when checking @Input() bindings (as per strictInputTypes). Disabling this can be beneficial when working with a library not built with strictNullChecks in mind.

[...]

The only unanswered question I had was where to set these flags. Which file should these flags be configured in, and how?

I searched the internet for a solution, but all I found were numerous articles on how to enable --strict and its benefits.

Answer №1

The Angular documentation explains that these configurations need to be specified within the tsconfig.json file under the angularCompilerOptions section.

Answer №2

A helpful solution was discovered in the following article:

To resolve the issue, it is recommended to add the following flags below the strictTemplates option:

within the tsconfig.app.json file

   ...
     "compilerOptions": {
       ...
       "strictNullChecks": true,
     },
     "angularCompilerOptions": {
       "strictTemplates": true,
       "strictInputTypes": true,
       "strictNullInputTypes": true
     }
    }

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