askirmas / arg-env

import { readFileSync } from "fs"

import { assigner, main, Reader } from "./main"

const {assign: $assign} = Object

export { parse } from "./parse"

export { argEnv }

export default argEnv

/**

 * **NB!** args, package and ENV are already picked

 * Revert precedence

 * @param {string[]} paths

 * @param {*} [env] `= process.env`

 * @param {*} [target] `= {}`

 * @param {*} [reader] `= readFileSync`

 */

// TODO #4 Like `path.unshift(".env")`

// TODO Move to a separate module

function argEnv<T extends Record<string, unknown>>(paths: string[], env = process.env, target = {} as T, reader = readFileSync as Reader) {

  assigner(env, paths, reader, target)

  $assign(env, target)

  return target

}

main(

  process.env,

  process.argv,

  readFileSync,

  // TODO #7

  false

)