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cross-var-no-babel

v1.2.0

Published

[![NPM](https://nodei.co/npm/cross-var.png?downloads=true&downloadRank=true&stars=true)](https://nodei.co/npm/cross-var/) [![NPM](https://nodei.co/npm-dl/cross-var.png?months=9&height=3)](https://nodei.co/npm/cross-var/)

Downloads

14,523

Readme

cross-var

NPM NPM

npm version npm license npm download npm download Package Quality Inline docs star this repo fork this repo

david dependency david devDependency david optionalDependency david peerDependency npms score Known Vulnerabilities

Overview

When using npm scripts it creates a lot of environment variables that are available for you to leverage when executing scripts.

If you'd like to take a look at all of the variables then you can run npm run env in your terminal.

> npm run env

npm_package_name=cross-var
npm_package_author_name=Elijah Manor
npm_package_version=1.0.0
... lots more ...

Now you can use those environment variables in your npm scripts by referencing them like the following

{
  "name": "World",
  "scripts": {
    "//": "The following only works on Mac OS X/Linux (bash)",
    "bash-script": "echo Hello $npm_package_name"
    "//": "The following only works on a Windows machine",
    "win-script": "echo Hello %npm_package_name%"
  }
}
> npm run bash-script

Hello World

However, this won't work on Windows... because it expects the variables to be surrounded by percent signs, so we can change our script just slightly.

cross-var to the Rescue!

The goal of cross-var is to let you use one script syntax to work either on a Mac OS X/Linux (bash) or Windows. Reference the Usage documention below on how to use cross-var in your scripts.

Usage

Simple Commands

{
  "version": "1.0.0",
  "config": {
    "port": "1337"
  },
  "scripts": {
    "prebuild": "cross-var rimraf public/$npm_package_version",
    "build:html": "cross-var jade --obj data.json src/index.jade --out public/$npm_package_version/",
    "server:create": "cross-var http-server public/$npm_package_version -p $npm_package_config_port",
    "server:launch": "cross-var opn http://localhost:$npm_package_config_port"
  }
}

Complex Commands

{
  "version": "1.0.0",
  "scripts": {
    "build:css": "cross-var \"node-sass src/index.scss | postcss -c .postcssrc.json | cssmin > public/$npm_package_version/index.min.css\"",
    "build:js": "cross-var \"mustache data.json src/index.mustache.js | uglifyjs > public/$npm_package_version/index.min.js\"",
  }
}

But What About!?!

Click on one of the following questions to reveal a detailed answer

However, if you want to support older Windows versions, then you might consider using cross-env or another approach to leverage environment variables in your scripts.