oxc-project/oxc · error · OxcDiagnostic

Fast refresh only works when a file has exports. Move your c

Error message

Fast refresh only works when a file has exports. Move your component(s) to a separate file.

What it means

Raised by react/only_export_components when the file defines component(s) but has no export statements at all. At the throw site the components are module-local, which is fine for Fast Refresh itself, but the rule flags the file because the author most likely intended to export the component and forgot — and once exported alone it will be refreshable. no_export_diagnostic is produced from report_diagnostics when analyze_exports found components yet zero exports.

Source

Thrown at crates/oxc_linter/src/rules/react/only_export_components.rs:39

fn named_export_components_diagnostic(span: Span) -> OxcDiagnostic {
    OxcDiagnostic::warn("Fast refresh only works when a file only exports components. Use a new file to share constants or functions between components.")
        .with_label(span)
}

fn anonymous_components_diagnostic(span: Span) -> OxcDiagnostic {
    OxcDiagnostic::warn(
        "Fast refresh can't handle anonymous components. Add a name to your export.",
    )
    .with_label(span)
}

fn local_components_diagnostic(span: Span) -> OxcDiagnostic {
    OxcDiagnostic::warn("Fast refresh only works when a file only exports components. Move your component(s) to a separate file.")
        .with_label(span)
}

fn no_export_diagnostic(span: Span) -> OxcDiagnostic {
    OxcDiagnostic::warn("Fast refresh only works when a file has exports. Move your component(s) to a separate file.")
        .with_label(span)
}

fn react_context_diagnostic(span: Span) -> OxcDiagnostic {
    OxcDiagnostic::warn("Fast refresh only works when a file only exports components. Move your React context(s) to a separate file.")
        .with_label(span)
}

#[derive(Debug, Default, Clone, Deserialize)]
pub struct OnlyExportComponents(Box<OnlyExportComponentsConfig>);

impl std::ops::Deref for OnlyExportComponents {
    type Target = OnlyExportComponentsConfig;

    fn deref(&self) -> &Self::Target {
        &self.0
    }
}

View on GitHub (pinned to e1e7af627c)

Solutions

1. Export the component(s) from the file.
2. Move the component(s) to a file where they are exported.

When it happens

Trigger: Thrown at crates/oxc_linter/src/rules/react/only_export_components.rs:39 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of oxc-project/oxc@e1e7af627c (2026-08-20). Data as JSON: /api/errors/1cf832745d6be622. Report an issue: GitHub.