DioxusLabs/dioxus · error

expected `hot_reload_context = true` or `hot_reload_context

Error message

expected `hot_reload_context = true` or `hot_reload_context = false`

What it means

The optional trailing options in the element-definition macro were malformed: after an option identifier, a boolean literal is required. Only `hot_reload_context = true` or `hot_reload_context = false` is accepted.

Source

Thrown at packages/html-internal-macro/src/elements.rs:71

            return Err(syn::Error::new(html_marker.span(), "expected `html`"));
        }
        input.parse::<Token![=]>()?;
        let html_path = input.parse()?;

        let mut hot_reload_context = false;
        while input.peek(Token![,]) {
            input.parse::<Token![,]>()?;
            if input.peek(Token![;]) {
                break;
            }

            let option: Ident = input.parse()?;
            input.parse::<Token![=]>()?;
            let enabled: LitBool = input.parse()?;
            if option == "hot_reload_context" {
                hot_reload_context = enabled.value;
            } else {
                return Err(syn::Error::new(
                    option.span(),
                    "expected `hot_reload_context = true` or `hot_reload_context = false`",
                ));
            }
        }

        input.parse::<Token![;]>()?;

        let mut gated_attribute_groups = Vec::new();
        let mut explicit_gated_attribute_groups = false;
        if !input.is_empty() {
            let fork = input.fork();
            if let Ok(marker) = fork.call(Ident::parse_any)
                && marker == "gated_attributes"
            {
                explicit_gated_attribute_groups = true;
                let _marker: Ident = input.call(Ident::parse_any)?;
                let content;

View on GitHub (pinned to 24f6a829df)

Solutions

1. Set hot_reload_context explicitly to either `true` or `false`, e.g. hot_reload_context = true.

When it happens

Trigger: Thrown at packages/html-internal-macro/src/elements.rs:71 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of DioxusLabs/dioxus@24f6a829df (2026-08-23). Data as JSON: /api/errors/4f34e2639068adae. Report an issue: GitHub.