Platform-dependent-modules NPM

platform-dependent-modules

Platform dependent modules installation. Allows to conditionally specify modules depending on current computer platform (Windows, Linux etc).

If some module is conditionally used depending on current computer platform, it anyway must be listed in package.json. npm install will fail if the platform is marked as unsupported for it.

To prevent installation failure, you may define which modules for which platforms to be installed.

Installation of platform-dependent modules is run on postinstall trigger.

Troubleshooting

Sometimes after platform-dependent-modules version update command npm install may fail with following message:

1

Windows:

'platform-dependent-modules' is not recognized as an internal or external command, operable program or batch file.

2

Linux:

sh: 1: platform-dependent-modules: Permission denied

In both cases it is needed to reinstall platform-specific-modules manually. Remove it and install again, then rerun npm install

npm r platform-dependent-modules
npm i platform-dependent-modules
npm i

If you getting error for some of the modules configured using 'platform-dependent-modules', like in example below winston-winlog2:

    Error: Cannot find module 'winston-winlog2'

Please, be aware that if you run npm install on one machine and copied project files with node_modules subdirectory to another computer with different platform, you'll need to install each module uses this package manually by npm install <module> or by full reinstall (removing node_modules and running npm install)

If you have different needs regarding the functionality, please add a feature request.

Installation

npm install --save platform-dependent-modules

Usage

Add to config section of package.json following text:

{
  ...
  "config": {
    "platformDependentModules": {
      "linux": [
        "empty-module"
      ],
      "win32": [
        "empty-module"
      ],
      "darwin": [
        "empty-module"
      ],
      "freebsd": [
        "empty-module"
      ],
      "sunos": [
        "empty-module"
      ]
    }
  ...
}

Or (more live examples):

{
  ...
  "config": {
    "platformDependentModules": {
      "win32": [
        "msnodesqlv8@^0.1.35"
      ]
    }
  }
  ...
}

You may also add platform-dependent module to optionalDependencies:

{
  ...
  "optionalDependencies": {
    "winston-winlog2": "^1.0.1"
  },
  "config": {
    "platformDependentModules": {
      "win32": [
        "winston-winlog2@^1.0.1"
      ]
    }
  }
  ...
}

Add to config section of package.json following text:

{
  ...
  "scripts": {
    "_postinstall": "node ./node_modules/platform-dependent-modules/cli.js",
    "postinstall": "npm run _postinstall",
  }
  ...
}

Now run only this script:

npm run _postinstall

Or during postinstall phase of install:

npm install

To run the example (Linux)

$ ./examples/example.sh 
* [platform-dependent-modules] Installing packages: empty-module
platform-dependent-modules@0.0.2 /home/alykoshin/sync/al-projects/dev/npm/platform-dependent-modules
└── empty-module@0.0.2  extraneous

* [platform-dependent-modules] empty-module@0.0.2,/home/alykoshin/sync/al-projects/dev/npm/platform-dependent-modules/node_modules/empty-module
* [platform-dependent-modules] Installation success

To run the example (Windows)