inset ImportDecl after transform changed to named import #5899

liaoyinglong · 2022-09-19T09:49:09Z

liaoyinglong
Sep 19, 2022

this is plugin code

impl VisitMut for AutoImport {
    fn visit_mut_module(&mut self, module: &mut Module) {
        module.visit_mut_children_with(self);
        module.body.insert(
            0,
            ModuleItem::ModuleDecl(ModuleDecl::Import(ImportDecl {
                span: Default::default(),
                specifiers: vec![ImportSpecifier::Named(ImportNamedSpecifier {
                    span: Default::default(),
                    local: quote_ident!("Trans"),
                    imported: None,
                    is_type_only: false,
                })],
                src: Str::from("@scope/lib"),
                type_only: false,
                asserts: None,
            })),
        )
    }
}

test

input code

<Trans>Refresh inbox</Trans>;

in test_fixture is expected, rust side

expect output(in test_fixture is correct)

import { Trans } from "@scope/lib";
<Trans>Refresh inbox</Trans>;

build to wasm , and use by `@swc/core` not expected

output is

import { Trans as Trans1 } from "@scope/lib";
<Trans>Refresh inbox</Trans>;

that case runtime error

that is @swc/core call code

const swc = require("@swc/core");

swc
  .transform(" <Trans>Attachment  saved.</Trans>;", {
    filename: "input.jsx",
    jsc: {
      parser: {
        syntax: "ecmascript",
        jsx: true,
      },
      target: "es2015",
      experimental: {
        plugins: [[require.resolve("@scope/swc-plugin"), {}]],
      },
    },
  })
  .then((output) => {
    console.log(output.code);
  });