oxc-project/oxc · error · OxcDiagnostic

Multiple named export declarations; consolidate all named ex

Error message

Multiple named export declarations; consolidate all named exports into a single export declaration

What it means

Fires from import/group-exports when an ES module contains multiple separate named export declarations for the same kind. The helper selects this message (vs the CommonJS variant) when is_commonjs is false, labeling the span of the redundant export declaration.

Source

Thrown at crates/oxc_linter/src/rules/import/group_exports.rs:20

    AstKind,
    ast::{ImportOrExportKind, MemberExpression},
};
use oxc_diagnostics::OxcDiagnostic;
use oxc_macros::declare_oxc_lint;
use oxc_span::Span;
use rustc_hash::FxHashMap;

use crate::{context::LintContext, rule::Rule};

fn group_exports_diagnostic(span: Span, is_commonjs: bool) -> OxcDiagnostic {
    let (msg, help) = if is_commonjs {
        (
            "Multiple CommonJS exports; consolidate all exports into a single assignment to `module.exports`",
            "Combine multiple assignments into a single `module.exports = { ... }` statement",
        )
    } else {
        (
            "Multiple named export declarations; consolidate all named exports into a single export declaration",
            "Use a single export declaration with multiple specifiers: `export { spec1, spec2 }`",
        )
    };
    OxcDiagnostic::warn(msg).with_help(help).with_label(span)
}

#[derive(Debug, Default, Clone)]
pub struct GroupExports;

declare_oxc_lint!(
    /// ### What it does
    ///
    /// Reports when named exports are not grouped together in a single export declaration
    /// or when multiple assignments to CommonJS module.exports
    /// or exports object are present in a single file.
    ///
    /// ### Why is this bad?
    ///

View on GitHub (pinned to e1e7af627c)

Solutions

1. Consolidate the named exports into a single `export { ... }` or `export const ...` declaration
2. Merge multiple export statements covering the same bindings

When it happens

Trigger: Thrown at crates/oxc_linter/src/rules/import/group_exports.rs:20 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/00aa97bf8ab11f96. Report an issue: GitHub.