Introduction to `fast-glob`

`fast-glob` is a highly efficient and flexible library for traversing the file system and matching files using glob patterns. It provides a wide range of options and methods to cater for various use cases, making it a favorite choice among developers for file handling tasks.

Key Features and API Examples

Basic Usage

const fg = require('fast-glob');

(async () => {
    const entries = await fg(['src/**/*.js', 'README.md']);
    console.log(entries);
})();

Asynchronous Patterns

const fg = require('fast-glob');

fg(['src/**/*.js'])
    .then((entries) => {
        console.log(entries);
    });

Synchronous Patterns

const fg = require('fast-glob');

const entries = fg.sync(['src/**/*.js']);
console.log(entries);

Excluding Patterns

const fg = require('fast-glob');

(async () => {
    const entries = await fg(['src/**/*.js', '!src/**/*.test.js']);
    console.log(entries);
})();

Options Usage

const fg = require('fast-glob');

(async () => {
    const entries = await fg(['src/**/*.js'], { dot: true, onlyFiles: true });
    console.log(entries);
})();

Using in an Application

Let’s see a simple application example where `fast-glob` is used to list all JavaScript files in a project and print out their contents.

const fs = require('fs').promises;
const fg = require('fast-glob');

(async () => {
    const files = await fg(['src/**/*.js']);
    for (const file of files) {
        const content = await fs.readFile(file, 'utf-8');
        console.log(`File: ${file}`);
        console.log(content);
        console.log('---');
    }
})();

The example above demonstrates how you can integrate `fast-glob` with Node.js file system operations to create a useful utility that reads and processes file contents.

With `fast-glob`, the power to traverse and manage files in your project is both easy and efficient. Try integrating `fast-glob` into your own projects and experience the benefits it brings to file handling tasks.

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