rsnext/packages/next/build/webpack/loaders/get-module-build-info.ts

import type {
  MiddlewareMatcher,
  RSCModuleType,
} from '../../analysis/get-page-static-info'
import { webpack } from 'next/dist/compiled/webpack/webpack'

/**
 * A getter for module build info that casts to the type it should have.
 * We also expose here types to make easier to use it.
 */
export function getModuleBuildInfo(webpackModule: webpack.Module) {
  return webpackModule.buildInfo as {
    nextEdgeMiddleware?: EdgeMiddlewareMeta
    nextEdgeApiFunction?: EdgeMiddlewareMeta
    nextEdgeSSR?: EdgeSSRMeta
    nextUsedEnvVars?: Set<string>
    nextWasmMiddlewareBinding?: AssetBinding
    nextAssetMiddlewareBinding?: AssetBinding
    usingIndirectEval?: boolean | Set<string>
    route?: RouteMeta
    importLocByPath?: Map<string, any>
    rootDir?: string
    rsc?: RSCMeta
  }
}

export interface RSCMeta {
  type?: RSCModuleType
  requests?: string[] // client requests in flight client entry
}

export interface RouteMeta {
  page: string
  absolutePagePath: string
}

export interface EdgeMiddlewareMeta {
  page: string
  matchers?: MiddlewareMatcher[]
}

export interface EdgeSSRMeta {
  isServerComponent: boolean
  isAppDir?: boolean
  page: string
}

export interface AssetBinding {
  filePath: string
  name: string
}