Linter Rule: Validate the herb:slots mode

Rule: herb-slots-valid-mode

Description

Requires the herb:slots directive to name at most one mode, spelled client or server.

Rationale

The engine reads the directive's option with a permissive match and falls back to server when nothing matches. A misspelled mode like clien therefore compiles without complaint, every slot renders on the server, and the client features the author asked for never activate, with no error anywhere. The same silence covers a directive naming two modes, where the first recognized one wins.

Examples

✅ Good

<%# herb:slots client %>

<div><%= @name %></div>

<%# herb:slots %>

<div><%= @name %></div>

🚫 Bad

<%# herb:slots clien %>
`herb:slots clien` does not name a single mode, and the engine silently resolves it to `server`. Write `<%# herb:slots client %>` or `<%# herb:slots server %>`. (herb-slots-valid-mode)

<div><%= @name %></div>

<%# herb:slots client server %>
`herb:slots client server` does not name a single mode, and the engine silently resolves it to `client`. Write `<%# herb:slots client %>` or `<%# herb:slots server %>`. (herb-slots-valid-mode)

<div><%= @name %></div>

References

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