declared-field.md

title	declared-field: Decorated field is erased
description	Emit decorated class fields rather than declaring them away.

What

A decorated property uses declare. Rule: arc-core/declared-field.

Why

declare erases the property from the emitted class; use a definite assignment assertion when Arc initializes it.

Bad

@field(String) declare title: string;

Good

@field(String) title!: string;