How do you enable binding expression validation?

You can enable binding expression validation explicitly by adding the compiler option fullTemplateTypeCheck in the "angularCompilerOptions" of the project's tsconfig.json. It produces error messages when a type error is detected in a template binding expression.

For example, consider the following component:

selector: 'my-component',
template: '{{}}'
class MyComponent {
user?: User;

This will produce the following error:

my.component.ts.MyComponent.html(1,1): : Property 'contacts' does not exist on type 'User'. Did you mean 'contact'?

February 11, 2022