Package Exports

check-node-version

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (check-node-version) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

check-node-version

Check installed versions of node, npm, and yarn.

Install

npm: check-node-version

npm install check-node-version

Command Line Usage

SYNOPSIS
      check-node-version [OPTIONS]

DESCRIPTION
      check-node-version will check if the current node, npm and yarn
      versions match the given semver version ranges.

      If the given version is not satisfied, information about
      installing the needed version is printed and the program exits
      with an error code.

OPTIONS

      --node VERSION
            Check that the current node version matches the given semver
            version range.

      --npm VERSION
            Check that the current npm version matches the given semver
            version range.

      --yarn VERSION
            Check that the current yarn version matches the given semver
            version range.

      --package
            Use the "engines" key in the current package.json for the
            semver version ranges.

      -p, --print
            Print installed versions.

      -h, --help
            Print this message.

Examples

Check for node 6, failing

Check for node 6, but have 8.2.1 installed.

$ check-node-version --node 6
node: 8.2.1
Error: Wanted node version 6 (>=6.0.0 <7.0.0)
To install node, run `nvm install 6` or see https://nodejs.org/
$ echo $?
1

Check for node 6, passing

If all versions match, there is no output:

$ check-node-version --node 6
$ echo $?
0

Check for node and npm

You can check versions of any combinations of node, npm, and yarn at one time.

$ check-node-version --node 4 --npm 2.14

Check for `node@4` and `npm@2.14`

You can check for the version of yarn:

$ check-node-version --yarn 0.17.1

Print installed versions

Use the --print option to print all currently installed versions, even if the version checks match.

$ check-node-version --print --node 0.12
node: v0.12.7
npm: v2.14.10
yarn: v0.21.3
$ echo $?
0

Use with a `.nvmrc` file

$ check-node-version --node $(cat .nvmrc) --npm 2.14

Use with `npm test`

{
  "name": "my-package",
  "devDependencies": {
    "check-node-version": "^1.0.0"
  },
  "scripts": {
    "test": "check-node-version --node '>= 4.2.3' && node my-tests.js"
  }
}

API Usage

This module can also be used programmatically from node. See index.js and test.js for more information.