import { defineConfig } from "vite";
import { ember } from "@nullvoxpopuli/ember-vite";

export default defineConfig({
  plugins: [
    ember(),
  ],
}

And remove any plugins from embroider or babel. Then delete from your package.json: @rollup/plugin-babel, @embroider/core, @embroider/vite.

[!NOTE] babel related deps are still needed for linting, so don't delete those

Requirements

type=module in your ember app
babel config must be named babel.config.js
@embroider/vite is up to date~ish

Configuration

The ember() plugin takes the following options:

ember({
  // optional production configs
  production: {
    // optional configuration of codeSplitting.groups
    // in the vite config.
    //
    // Docs here:
    // https://rolldown.rs/reference/OutputOptions.codeSplitting#groups
    codeSplittingGroups: [
      /* ... */
    ],
  },
  // optional babel config
  babel: {
    // defaults to true.
    // when babel runs, do so in parallel across many cores.
    parallel: false,
    // optional way to configure when babel is activateed.
    // by default, all transforming is oxc, except when babel is needed
    // (for things not currently implemented in oxc)
    include: {
      // if a file imports from anything in this array, use babel instead of
      // oxc for that file.
      //
      // For example: ['ember-concurrency', 'ember-intl/format-message'],
      whenImporting: [
        /* ... */
      ],
    },
  },
});