Package Exports

if-node-version

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Readme

if-node-version

Run a shell command if it's on the node of specified versions.

$ if-node-version ">=4" eslint lib test

$ if-node-version "<6" node ./scripts/fallback.js

Maybe this helps you together with npm-scripts.

Installation

if-node-version can be installed with npm.

$ npm install --save-dev if-node-version

if-node-version requires Node.js >=0.10.0

Usage

CLI

Usage:
    $ if-node-version <VersionRange> <Command> [...args]
    $ if-node-version --help
    $ if-node-version --version

    Run a shell command if it's on the node of specified versions.

Parameters:
    <VersionRange> .... A text which specifies the version range of Node.js.
                        This text format is defined by node-semver module:
                        https://www.npmjs.com/package/semver#ranges
    <Command> ......... A shell command.
    [...args] ......... Parameters of the shell command.

Examples:
    $ if-node-version ">=4" eslint lib test
    $ if-node-version "<6" node ./scripts/fallback.js

Node API

var spawnIfNodeVersion = require("if-node-version")

spawnIfNodeVersion(versionRange, command, args, options)

Spawn a child process with specified parameters if the node version satisfies a given version range.

This function returns child_process.ChildProcess object.

versionRange {string} - A text which specifies the version range of Node.js. This text format is defined by node-semver module: https://www.npmjs.com/package/semver#ranges
command {string} - The command to run.
args {Array.<string>} - List of string arguments.
options {object} - An option object. See the document of child_process.spawn

spawnIfNodeVersion.sync(versionRange, command, args, options)

This is synchronous version of spawnIfNodeVersion(versionRange, command, args, options).

This function returns the object as same as child_process.spawnSync.

Note: If you use this function on node 0.10, you will also need to install spawn-sync.