oxc-project/oxc · error · OxcDiagnostic

Explicit enum values must only be literal values (string, nu

Error message

Explicit enum values must only be literal values (string, number, boolean, etc.).

What it means

Raised by typescript/prefer-literal-enum-member when an enum member is initialized with a computed/non-literal value (a variable, function call, or template expression). Non-literal initializers prevent safe enum usage.

Source

Thrown at crates/oxc_linter/src/rules/typescript/prefer_literal_enum_member.rs:16

use oxc_ast::{AstKind, ast::Expression};
use oxc_diagnostics::OxcDiagnostic;
use oxc_macros::declare_oxc_lint;
use oxc_span::Span;
use oxc_syntax::operator::{BinaryOperator, UnaryOperator};
use schemars::JsonSchema;
use serde::Deserialize;

use crate::{
    AstNode,
    context::{ContextHost, LintContext},
    rule::{DefaultRuleConfig, Rule},
};

fn prefer_literal_enum_member_diagnostic(span: Span) -> OxcDiagnostic {
    OxcDiagnostic::warn(
        "Explicit enum values must only be literal values (string, number, boolean, etc.).",
    )
    .with_help("Require all enum members to be literal values.")
    .with_label(span)
}

#[derive(Debug, Default, Clone, JsonSchema, Deserialize)]
#[serde(rename_all = "camelCase", default, deny_unknown_fields)]
pub struct PreferLiteralEnumMember {
    /// When set to `true`, allows bitwise expressions in enum member initializers.
    /// This includes bitwise NOT (`~`), AND (`&`), OR (`|`), XOR (`^`), and shift operators (`<<`, `>>`, `>>>`).
    allow_bitwise_expressions: bool,
}

declare_oxc_lint!(
    /// ### What it does
    ///
    /// Explicit enum values must only be literal values (string, number, boolean, etc.).

View on GitHub (pinned to e1e7af627c)

Solutions

1. Initialize enum members with literal string, number, or boolean values.
2. Move computed values out of the enum into constants.
3. Enable allowBitwiseCombinations if bitwise flag enums are intended.

When it happens

Trigger: Thrown at crates/oxc_linter/src/rules/typescript/prefer_literal_enum_member.rs:16 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/1a668bd25b9ecaca. Report an issue: GitHub.