toddbluhm / env-cmd / 16245980298

import { resolve } from 'node:path'

import { homedir } from 'node:os'

import { cwd } from 'node:process'

// Special file extensions that node can natively import

export const IMPORT_HOOK_EXTENSIONS = [

  '.json',

  '.js',

  '.cjs',

  '.mjs',

  '.ts',

  '.mts',

  '.cts',

  '.tsx',

];

/**

 * A simple function for resolving the path the user entered

 */

export function resolveEnvFilePath(userPath: string): string {

  // Make sure a home directory exist

  const home = homedir() as string | undefined

  if (home != null) {

    userPath = userPath.replace(/^~($|\/|\\)/, `${home}$1`)

  }

  return resolve(cwd(), userPath)

}

/**

 * A simple function that parses a comma separated string into an array of strings

 */

export function parseArgList(list: string): string[] {

  return list.split(',')

}

/**

 * A simple function to test if the value is a promise/thenable

 */

export function isPromise<T>(value?: T | PromiseLike<T>): value is PromiseLike<T> {

  return value != null

    && typeof value === 'object'

    && 'then' in value

    && typeof value.then === 'function'

}

/** @returns true if the error is `ERR_UNKNOWN_FILE_EXTENSION` */

export function isLoaderError(error: unknown): error is Error {

  return (

    error instanceof Error &&

  );

}