Create a productive environment for small personal scripts. Only try this at home.

esm.json

{
  "cache": false,
  "await": true
}

jsenv

#! /usr/bin/env sh

export ESM_OPTIONS=/path/to/jsenv/esm.json

NODE_PATH=/path/to/jsenv/node_modules/ \
node -r esm -r /path/to/jsenv/main.js "$@"

main.js

const jsonfile = require('jsonfile');
const execa = require('execa');
const color_support = require('color-support').hasBasic;
const c = require('ansi-colors');
c.enabled = color_support;

function add_global(key, value) {
  global[key] = value;
}

function stdout(str) {
  process.stdout.write(str);
}

async function stdin() {
  process.stdin.setEncoding('utf8');
  let input = '';

  for await (const chunk of process.stdin) {
    input += chunk;
  }

  return input;
}

function format_number(number) {
  return new Intl.NumberFormat('de-DE').format(number);
}

function curry(arity, fn, ...rest) {
  if (arity <= rest.length) {
    return fn(...rest);
  }

  return curry.bind(null, arity, fn, ...rest);
}

const shell = (options) => (cmd) => execa.command(cmd, options);
const sh = shell({ stdio: 'inherit' });
sh.quiet = shell();
sh.run = (cmd) => sh.quiet(cmd).then(res => res.stdout);
sh.build = shell;
sh.safe = (cmd) =>
  sh(cmd)
    .then((arg) => arg)
    .catch((arg) => arg);

add_global('color', c);
add_global('sh', sh);
add_global('argv', process.argv.slice(2));
add_global('cli', require('arg'));
add_global('stdin', stdin);
add_global('stdout', stdout);
add_global('fetch', require('node-fetch'));
add_global('FormData', require('form-data'));
add_global('cheerio', require('cheerio'));
add_global('jsonfile', {
  read: jsonfile.readFile,
  write: curry(2, (path, data) => jsonfile.writeFile(path, data, {spaces: 2}))
});
add_global('curry', curry);
add_global('format_number', format_number);

package.json

{
  "name": "jsenv",
  "version": "1.0.0",
  "description": "",
  "main": "main.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "MIT",
  "dependencies": {
    "ansi-colors": "^4.1.1",
    "arg": "^5.0.0",
    "cheerio": "^1.0.0-rc.5",
    "color-support": "^1.1.3",
    "dialog": "^0.3.1",
    "enquirer": "^2.3.6",
    "execa": "^5.0.0",
    "form-data": "^3.0.0",
    "jsonfile": "^6.1.0",
    "node-fetch": "^2.6.1",
    "pptr-testing-library": "^0.6.4",
    "puppeteer-core": "^7.0.3",
    "ramda": "^0.27.1"
  }
}