Function loadEnvironment

packages/vitest/src/integrations/env/loader.ts:100–131

(
  name: string,
  root: string,
  rpc: WorkerRPC,
  traces: Traces,
  viteModuleRunner: boolean,
)

}

export async function loadEnvironment(
  name: string,
  root: string,
  rpc: WorkerRPC,
  traces: Traces,
  viteModuleRunner: boolean,
): Promise<{ environment: Environment; loader?: ModuleRunner }> {
  if (isBuiltinEnvironment(name)) {
    return { environment: environments[name] }
  }
  if (!viteModuleRunner) {
    return { environment: await loadNativeEnvironment(name, root, traces) }
  }
  const loader = createEnvironmentLoader(root, rpc)
  const packageId
    = name[0] === '.' || name[0] === '/'
      ? resolve(root, name)
      : (await traces.$(
          'vitest.runtime.environment.resolve',
          () => rpc.resolve(`vitest-environment-${name}`, undefined, '__vitest__'),
        ))
          ?.id ?? resolve(root, name)
  const pkg = await traces.$(
    'vitest.runtime.environment.import',
    () => loader.import(packageId) as Promise<{ default: Environment }>,
  )
  const environment = resolveEnvironmentFromModule(name, packageId, pkg)
  return {
    environment,
    loader,
  }
}