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The zx package is a tool for writing better scripts in a Node.js environment. It provides a more convenient and modern way to write shell scripts using JavaScript, leveraging the power of Node.js and its ecosystem.
Running Shell Commands
This feature allows you to run shell commands directly from your JavaScript code using template literals. The `$` function is used to execute the command and handle the output.
const { $ } = require('zx');
(async () => {
await $`echo Hello, world!`;
})();
Handling Promises
zx makes it easy to handle promises and errors when running shell commands. You can use async/await syntax to manage asynchronous operations and catch errors using try/catch blocks.
const { $ } = require('zx');
(async () => {
try {
await $`exit 1`;
} catch (error) {
console.error('Command failed:', error);
}
})();
Using Environment Variables
You can set and use environment variables within your scripts. This is useful for configuring your script's behavior based on different environments or settings.
const { $ } = require('zx');
(async () => {
process.env.MY_VAR = 'Hello, world!';
await $`echo $MY_VAR`;
})();
File System Operations
zx provides convenient access to Node.js's fs module, allowing you to perform file system operations like reading and writing files with ease.
const { fs } = require('zx');
(async () => {
await fs.writeFile('example.txt', 'Hello, world!');
const content = await fs.readFile('example.txt', 'utf8');
console.log(content);
})();
ShellJS is a portable (Windows/Linux/macOS) implementation of Unix shell commands on top of the Node.js API. It provides a similar functionality to zx but uses a more traditional approach with a focus on compatibility with Unix shell commands.
Execa is a modern process execution library for Node.js. It provides a more powerful and flexible way to run shell commands compared to zx, with features like better error handling, streaming, and more detailed output.
The child_process module is a built-in Node.js module that provides the ability to spawn child processes. While it is more low-level and less convenient than zx, it offers more control and flexibility for advanced use cases.
A CLI tool for running command shortcuts.
npm install -g zx
Create a file called zx.yaml
containing the shortcuts. E.g.:
minify: gulp minify
clear: rm -rf dist
run: node server
reminify:
- rm -rf dist
- gulp minify
Execute the shortcuts by running zx
and the name of the shortcut in the console. E.g.: zx minify
.
The MIT License (MIT)
FAQs
A tool for writing better scripts
The npm package zx receives a total of 568,955 weekly downloads. As such, zx popularity was classified as popular.
We found that zx demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
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