global-modules-path

2018-12-06 admin

global-modules-path是什么

什么是global-modules-path,Returns path to globally installed package

global-modules-path使用教程帮助文档

global-modules-path

Returns path to globally installed package.

System requirements

In order to use this package you need:

  • Node.js 4.0.0 or later
  • npm 2.0.0 or later added to your PATH environment variable (you should be able to execute npm --version from your default terminal).

Usage

The module has a single public method called getPath. It requires at least one argument - the name of the globally installed package that you need. In case the package is not installed, getPath will return null. getPath will throw error in case the OS is NOT supported. Supported OS are:

  • Windows (process.platform returns win32)
  • macOS (process.platform returns darwin)
  • Linux (process.platform returns linux)

Using getPath with single argument

Example:

let pathToPackage = require("global-modules-path").getPath("packageName");

The method returns the path to globally installed package or null. The code constructs the path based on the result of npm config get prefix and checks if the package exists.

Using getPath with package name and executable name.

Example:

let pathToPackage = require("global-modules-path").getPath("packageName", "executableName");

The method returns the path to globally installed package or null. The code constructs the path based on the result of npm config get prefix and checks if the package exists. In case the package cannot be found in this way, the executableName is used to determine if the package is globally installed.

  • On Windows the package spawns where executableName command and parses the result.
  • On macOS and Linux the package spawns ls -l executableName and which executableName and parses the results.

NOTE: In some cases the executable name is not the same as the package name.

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