npm-run-path

What is npm-run-path?

The npm-run-path package is used to enhance the PATH environment variable with all the node_modules/.bin directories from the current directory up to the root. This allows you to run locally installed executables in your npm scripts without having to specify the full path to them.

What are npm-run-path's main functionalities?

Enhance PATH for local binaries

This feature allows you to get an enhanced PATH that includes paths to the locally installed npm binaries, making it easier to run them in scripts.

const npmRunPath = require('npm-run-path');

console.log(npmRunPath()); // Logs the enhanced PATH string

Get an environment object with an enhanced PATH

This feature provides an environment object similar to process.env but with the PATH property modified to include local binaries.

const npmRunPath = require('npm-run-path');

const env = npmRunPath.env();
console.log(env.PATH); // Logs the enhanced PATH within the environment object

Customize the PATH enhancement

This feature allows you to customize how the PATH is enhanced by providing options such as the current working directory and an existing PATH to modify.

const npmRunPath = require('npm-run-path');

const options = { cwd: '/some/path', path: process.env.PATH };
const env = npmRunPath.env(options);
console.log(env.PATH); // Logs the enhanced PATH based on the options provided

Other packages similar to npm-run-path

cross-env

cross-env is a package that allows you to set environment variables across platforms. It's similar to npm-run-path in that it helps with environment configuration for npm scripts, but it focuses on cross-platform compatibility rather than enhancing the PATH variable.

env-cmd

env-cmd is a package that allows you to execute commands using an environment from an env file. It is similar to npm-run-path in that it manipulates the environment for running scripts, but it does so by reading environment variables from files rather than modifying the PATH.

path-key

path-key is a simple package that returns the environment variable name for the PATH, which is platform-specific. It is related to npm-run-path in the sense that it deals with the PATH environment variable, but it does not enhance or modify the PATH itself.

README

npm-run-path

Get your PATH prepended with locally installed binaries

In npm run scripts you can execute locally installed binaries by name. This enables the same outside npm.

Install

$ npm install npm-run-path

Usage

const childProcess = require('child_process');
const npmRunPath = require('npm-run-path');

console.log(process.env.PATH);
//=> '/usr/local/bin'

console.log(npmRunPath());
//=> '/Users/sindresorhus/dev/foo/node_modules/.bin:/Users/sindresorhus/dev/node_modules/.bin:/Users/sindresorhus/node_modules/.bin:/Users/node_modules/.bin:/node_modules/.bin:/usr/local/bin'

// `foo` is a locally installed binary
childProcess.execFileSync('foo', {
	env: npmRunPath.env()
});

API

npmRunPath(options?)

Returns the augmented path string.

options

Type: object

cwd

Type: string
Default: process.cwd()

Working directory.

path

Type: string
Default: PATH

PATH to be appended.
Set it to an empty string to exclude the default PATH.

execPath

Type: string
Default: process.execPath

Path to the current Node.js executable. Its directory is pushed to the front of PATH.

This can be either an absolute path or a path relative to the cwd option.

npmRunPath.env(options?)

Returns the augmented process.env object.

options

Type: object

cwd

Type: string
Default: process.cwd()

Working directory.

env

Type: Object

Accepts an object of environment variables, like process.env, and modifies the PATH using the correct PATH key. Use this if you're modifying the PATH for use in the child_process options.

execPath

Type: string
Default: process.execPath

Path to the Node.js executable to use in child processes if that is different from the current one. Its directory is pushed to the front of PATH.

This can be either an absolute path or a path relative to the cwd option.

Related

• npm-run-path-cli - CLI for this module
• execa - Execute a locally installed binary

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