Function prepareRolldownScanner

packages/vite/src/node/optimizer/scan.ts:258–304

(
  environment: ScanEnvironment,
  entries: string[],
  deps: Record<string, string>,
  missing: Record<string, string>,
)

}

async function prepareRolldownScanner(
  environment: ScanEnvironment,
  entries: string[],
  deps: Record<string, string>,
  missing: Record<string, string>,
): Promise<{ build: () => Promise<void> }> {
  const { plugins: pluginsFromConfig = [], ...rolldownOptions } =
    environment.config.optimizeDeps.rolldownOptions ?? {}

  const transformOptions = deepClone(rolldownOptions.transform) ?? {}
  if (transformOptions.jsx === undefined) {
    transformOptions.jsx = {}
  } else if (
    transformOptions.jsx === 'react' ||
    transformOptions.jsx === 'react-jsx'
  ) {
    transformOptions.jsx = getRollupJsxPresets(transformOptions.jsx)
  }
  if (typeof transformOptions.jsx === 'object') {
    transformOptions.jsx.development ??= !environment.config.isProduction
  }
  const transformSyncJsxOptions: OxcTransformOptions['jsx'] =
    transformOptions.jsx === false ? undefined : transformOptions.jsx

  const plugins = await asyncFlatten(arraify(pluginsFromConfig))
  plugins.push(
    ...rolldownScanPlugin(
      environment,
      deps,
      missing,
      entries,
      transformSyncJsxOptions,
    ),
  )

  async function build() {
    await scan({
      ...rolldownOptions,
      transform: transformOptions,
      input: entries,
      logLevel: 'silent',
      plugins,
    })
  }

  return { build }
}

function orderedDependencies(deps: Record<string, string>) {
  const depsList = Object.entries(deps)