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Stencil @Prop() read-only input enforcement Stencil documents @Prop() as a read-only input supplied by the parent component. Internal mutable values belong in @State(), and reactions to prop changes belong in @Watch(). Direct assignment to a @Prop() inside the component class falls outside the documented update path, but the compiler does not appear to hard-
Internal vs External State: A Decision Point StencilJS offers two primary decorators for managing component data: @State for internal, encapsulated state, and @Prop for data supplied by a parent or via an HTML attribute. The choice between them hinges on ownership of the data and the desired data flow direction. When a component performs multiple updates—som
stenciljs