export type Loader<T> = () => Promise<T>
export const onceLoader = <T>(loader: Loader<T>): Loader<T> => {
  let cache: T | undefined
  return async () => {
    if (cache === undefined) {
      cache = await loader()
    }
    return cache
  }
}

// import type * as NodeFs from "node:fs"
// export type { NodeFs }
// export type NodeFsModule = typeof import("node:fs")
// export const loadNodeFs: Loader<NodeFsModule> = onceLoader(async () => {
//   const specifier = "node:fs"
//   const fs = await import(/* @vite-ignore */specifier)
//   return fs as NodeFsModule
// })

// import type * as NodePath from "node:path"
// export type { NodePath }
// export type NodePathModule = typeof import("node:path")
// export const loadNodePath: Loader<NodePathModule> = onceLoader(async () => {
//   const specifier = "node:path"
//   const path = await import(/* @vite-ignore */specifier)
//   return path as NodePathModule
// })

// import type * as NodeStreamWeb from "node:stream/web"
// export type { NodeStreamWeb }
// export type NodeStreamWebModule = typeof import("node:stream/web")
// export const loadNodeStreamWeb: Loader<NodeStreamWebModule> = onceLoader(async () => {
//   const specifier = "node:stream/web"
//   const streamWeb = await import(/* @vite-ignore */specifier)
//   return streamWeb as NodeStreamWebModule
// })

// import type * as Dotenvx from "@dotenvx/dotenvx"
// export type { Dotenvx }
// export type DotenvxModule = typeof import("@dotenvx/dotenvx")
// export const loadDotenvx: Loader<DotenvxModule> = onceLoader(async () => {
//   const specifier = "@dotenvx/dotenvx"
//   const dotenvx = await import(/* @vite-ignore */specifier)
//   return dotenvx as DotenvxModule
// })