ErrorMessageFormatter<E> class abstract

Formats validation errors into user-facing messages.

Implement this to provide reusable error formatting logic.

Example

enum AuthError { empty, invalidEmail }

class AuthErrorFormatter extends ErrorMessageFormatter<AuthError> {
  const AuthErrorFormatter();

  @override
  String format(AuthError error) {
    return switch (error) {
      AuthError.empty => 'Email is required',
      AuthError.invalidEmail => 'Invalid email address',
    };
  }
}

Constructors

ErrorMessageFormatter()

Creates an error message formatter.

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

format(E error) → String

Returns the user-facing message for error.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited