env

Basic environment detector.

Usage

CLI

npm i @jlongyam/env -S or -D

• ES Module

import env from "@jlongyam/env";

console.log(env);

• CommonJS

const env = require("@jlongyam/env");

console.log(env);

• SystemJS

npm i systemjs

import url from "url";
import systemjs from "systemjs";

const { System, applyImportMap, setBaseUrl } = systemjs;
const basePath = url.pathToFileURL(process.cwd()).href;

setBaseUrl(System, basePath);
applyImportMap(System, {
  imports: {
    env: "./node_modules/@jlongyam/env/dist/system/env.js"
  }
});

const exports = {
  env: await System.import(["env"])
};
const env = exports.env.default;

console.log(env);

Browser

• IIFE

<script src="https://cdn.jsdelivr.net/npm/@jlongyam/env/dist/env.min.js"></script>
<script>
  console.log(env)
</script>

• ES Module

<script type="importmap">
  {
    "imports": {
      "env": "https://cdn.jsdelivr.net/npm/@jlongyam/env/dist/env.es.min.js"
    }
  }
</script>
<script type="module">
  import env from "env";

  console.log(env);
</script>

• SystemJS

<script src="https://cdn.jsdelivr.net/npm/systemjs/dist/system.min.js"></script>
<script type="systemjs-importmap">
  {
    "imports": {
      "env": "https://cdn.jsdelivr.net/npm/@jlongyam/env/dist/env.min.js"
    }
  }
</script>
<script>
  (async function () {
    let env = await System.import(["env"]);
    env = env.default;

    console.log(env);
  })();
</script>

Worker

• worker.js

import env from "https://cdn.jsdelivr.net/npm/@jlongyam/env/src/env.es.min.js";

self.postMessage({
  result: env.worker
})

• front

<script type="module">
  const worker = new Worker('./worker.js', { type: 'module' });

  worker.addEventListener('message', (event) => {
    console.log(event.data)
  });
</script>

API

Base

Namespace	Type
env.browser	Boolean
env.worker	Boolean
env.cli	Boolean

Expansion

Usage example using Expansion namespace:

import envGlobal from "@jlongyam/env/global";
import envBrowser from "@jlongyam/env/browser";

Alternative method for legacy node:

const envGlobal = require('@jlongyam/env/dist/global/envGlobal');

Namespace	Type
envGlobal	Object
envBrowser	Object

Note

To use envBrowser in ancient browser like Internet Explorer, it's require polyfill:

• Array.isArray
• Array.some
• Object.defineProperty
• Object.defineProperties

See "test/browser/env.iife.test.html"

Uninstall

npm un @jlongyam/env -D or -S

Alternative

• environment
• env
• bowser