bogus members are not supported in the Error global

Error message

bogus members are not supported in the Error global

What it means

Emitted by the Error-global lowering (a sibling of lower_disposable_type_member around lower.rs:2530) when a member of the Error interface declaration parses as a bogus (unparseable) type member. The Error global lowering expects a strict set of member shapes and refuses anything the parser cannot classify.

Solutions

Open the Error declaration fixture at the reported line and fix or delete the unparseable member.
Restore the member to a valid form matching the expected Error interface shape (e.g. `message: string;`, `name: string;`, `stack?: string;`).
Re-run the codegen and confirm the Error global lowers without errors.

Example fix

// before (fixture)
interface Error {
  name string;
}
// after
interface Error {
  name: string;
}

Defensive patterns

Strategy: validation

Validate before calling

// Confirm the Error fixture parses cleanly before codegen:
// cargo run -p xtask codegen 2>&1 | grep -i bogus
// Additionally check for merge markers:
//   grep -nE '^(<<<<<<<|=======|>>>>>>>)' error.d.ts

Prevention

Fix merge conflicts in declaration fixtures fully before running codegen.
Keep Error interface members in the exact expected shape (message/name/stack properties) and avoid exotic member syntax.
Run `cargo run -p xtask codegen` locally before pushing any change to global declaration fixtures.

When it happens

Trigger: Editing the Error global declaration fixture so its interface body contains syntactically invalid or truncated member text, then running `cargo run -p xtask codegen`.

Common situations: A merge conflict inside the Error d.ts fixture, a typo like `message: string` missing its separator, or copy-paste damage leaves an unparseable member in the Error interface body.

Understand the failure class

Background: Schema validation failed / invalid input schema: payload rejected because its shape doesn't match the expected schema — this error's family across 28 libraries.

Related errors

AI-assisted analysis of biomejs/biome@17a2560fb5 (2026-09-13). Data as JSON: /api/errors/7376aec1078d7192. Report an issue: GitHub.

Appendix: source

Thrown at xtask/codegen/src/generate_global_types/lower.rs:2556

                lower_optional_error_member_reference(&name, type_reference)?
            } else {
                type_reference
            };
            Ok(Some(LoweredTypeMember {
                name,
                kind: LoweredMemberKind::Named { optional },
                type_reference,
            }))
        }
        AnyTsTypeMember::TsMethodSignatureTypeMember(_) => {
            bail!("method signatures are not supported in the Error global")
        }
        AnyTsTypeMember::TsCallSignatureTypeMember(_)
        | AnyTsTypeMember::TsConstructSignatureTypeMember(_) => {
            bail!("Error global signatures must be declared on ErrorConstructor")
        }
        AnyTsTypeMember::JsBogusMember(_) => {
            bail!("bogus members are not supported in the Error global")
        }
        AnyTsTypeMember::JsMetavariable(_) => {
            bail!("metavariable members are not supported in the Error global")
        }
        AnyTsTypeMember::TsGetterSignatureTypeMember(_) => {
            bail!("getter signatures are not supported in the Error global")
        }
        AnyTsTypeMember::TsIndexSignatureTypeMember(_) => {
            bail!("index signatures are not supported in the Error global")
        }
        AnyTsTypeMember::TsSetterSignatureTypeMember(_) => {
            bail!("setter signatures are not supported in the Error global")
        }
    }
}

/// Validates supported optional `Error` members.
fn lower_optional_error_member_reference(

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