Typed forms are a clear improvement and the migration produces some genuinely confusing errors, most of which come from two misunderstandings.

Disabled controls and getRawValue

value excludes disabled controls, so its type is a partial. If you need everything, getRawValue() is what you want, and it is typed correctly. A great deal of the frustration people report is this one distinction, and the type system is being accurate rather than difficult.

Nullability is real

A control is nullable by default because reset() sets it to null. Use nonNullable: true when a reset should return to the initial value instead, which is usually what a form actually wants.

• Build forms with FormBuilder.nonNullable to avoid repeating it on every control.
• Define the form interface first and derive the group from it, rather than inferring the shape from a builder call and hoping.
• For dynamic forms, FormRecord exists precisely because a FormGroup with unknown keys cannot be typed.