oxc-project/oxc · error · OxcDiagnostic

Context definition is missing display name.

Error message

Context definition is missing display name.

What it means

Raised by react/display-name when a React context created via React.createContext is assigned without a displayName property. Contexts lack an inferred name, making them hard to identify in React DevTools.

Source

Thrown at crates/oxc_linter/src/rules/react/display_name.rs:36

use crate::{
    ast_util::iter_outer_expressions,
    config::ReactVersion,
    context::LintContext,
    rule::{DefaultRuleConfig, Rule},
    utils::{
        InnermostFunction, arrow_function_returns, expression_returns,
        find_innermost_function_with_jsx, function_returns, is_hoc_call, is_react_component_name,
    },
};

fn component_display_name_diagnostic(span: Span) -> OxcDiagnostic {
    OxcDiagnostic::warn("Component definition is missing display name.")
        .with_help("Add a `displayName` property to the component.")
        .with_label(span)
}

fn context_display_name_diagnostic(span: Span) -> OxcDiagnostic {
    OxcDiagnostic::warn("Context definition is missing display name.")
        .with_help("Add a `displayName` property to the context.")
        .with_label(span)
}

declare_oxc_lint!(
    /// ### What it does
    ///
    /// Enforces that React components have a `displayName` property.
    ///
    /// ### Why is this bad?
    ///
    /// React DevTools uses `displayName` to show component names in the component tree.
    /// Without `displayName`, components will show up as "Unknown" in DevTools.
    ///
    /// ### Examples
    ///
    /// Examples of **incorrect** code for this rule:
    /// ```jsx

View on GitHub (pinned to e1e7af627c)

Solutions

1. Set MyContext.displayName = "MyContext" after creation.
2. Assign the context to a named variable so DevTools can infer the name, or add the displayName property.

When it happens

Trigger: Thrown at crates/oxc_linter/src/rules/react/display_name.rs:36 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/c5bcc0ff86daa14e. Report an issue: GitHub.