js-file-download is a simple and lightweight library that enables developers to trigger file downloads in web applications. It provides an easy-to-use API for downloading files from JavaScript, making it particularly useful for applications that need to generate and download files dynamically, such as reports, images, or documents. While js-file-download is effective for handling file downloads, there are several alternatives in the ecosystem that offer similar functionalities. Here are a few noteworthy options:

• blob-util is a utility library for working with Blob objects in JavaScript. It provides functions for creating Blobs from various data types, converting Blobs to data URLs, and more. While it doesn't directly handle downloads, it can be used in conjunction with other libraries to facilitate file downloads by converting data into Blob format. If you need to manipulate Blob data before downloading, blob-util is a great choice for enhancing your file handling capabilities.
• downloadjs is a lightweight library that simplifies the process of downloading files in web applications. It supports various types of data, including strings, Blobs, and data URLs, and provides a straightforward API for triggering downloads. downloadjs is particularly useful for developers looking for a minimalistic solution to handle file downloads without the overhead of larger libraries. Its simplicity and ease of use make it a popular choice for straightforward download tasks.
• file-saver is a widely-used library for saving files on the client-side. It provides a robust API for saving files generated in JavaScript, such as images, text files, and more. file-saver supports various file types and can handle both Blob and data URL formats. If you are looking for a comprehensive solution for saving files in web applications, file-saver is a powerful and flexible option that integrates well with different data types.

To compare these packages and see how they stack up against each other, check out the following link: Comparing blob-util vs downloadjs vs file-saver vs js-file-download.