swc-project/swc · error

unimplemented

Error message

unimplemented

What it means

Error "unimplemented" thrown in swc-project/swc.

Source

Thrown at crates/swc_estree_compat/src/babelify/typescript.rs:216

        }
    }
}

impl Babelify for TsTypeElement {
    type Output = TSTypeElement;

    fn babelify(self, ctx: &Context) -> Self::Output {
        match self {
            TsTypeElement::TsCallSignatureDecl(t) => {
                TSTypeElement::CallSignatureDecl(t.babelify(ctx))
            }
            TsTypeElement::TsConstructSignatureDecl(t) => {
                TSTypeElement::ConstructSignatureDecl(t.babelify(ctx))
            }
            TsTypeElement::TsPropertySignature(t) => TSTypeElement::PropSignature(t.babelify(ctx)),
            TsTypeElement::TsMethodSignature(t) => TSTypeElement::MethodSignature(t.babelify(ctx)),
            TsTypeElement::TsIndexSignature(t) => TSTypeElement::IndexSignature(t.babelify(ctx)),
            TsTypeElement::TsGetterSignature(_) => panic!("unimplemented"),
            TsTypeElement::TsSetterSignature(_) => panic!("unimplemented"),
            #[cfg(swc_ast_unknown)]
            _ => panic!("unable to access unknown nodes"),
        }
    }
}

impl Babelify for TsCallSignatureDecl {
    type Output = TSCallSignatureDeclaration;

    fn babelify(self, ctx: &Context) -> Self::Output {
        TSCallSignatureDeclaration {
            base: ctx.base(self.span),
            type_parameters: self.type_params.map(|t| t.babelify(ctx)),
            parameters: self
                .params
                .into_iter()
                .map(|param| param.babelify(ctx).into())

View on GitHub (pinned to d7d7434666)

When it happens

Trigger: Thrown at crates/swc_estree_compat/src/babelify/typescript.rs:216 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of swc-project/swc@d7d7434666 (2026-08-16). Data as JSON: /api/errors/91004026c26d38ba. Report an issue: GitHub.